Simcha Leiner (born 1989) is an American singer, composer and entertainer in the Contemporary Jewish religious music industry. Career Leiner started singing at weddings in 2008. In 2014, he officia
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1e43ea6d3969f32ba560ede8166e04f573a8f9efc12721b6e0c2a979dd8076. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fc30650-af05-46a7-b2e3-604abe06637b.json and https://artists.proofprofile.net/proofs/artist/5fc30650-af05-46a7-b2e3-604abe06637b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dea8a60a814a2bd42df6c172f56c906074ae4195bdaa3296b743de1afbd14a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cfc140290a65b708345df094aabda78c14499c7b045007c4038b54d82213f5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4043159b84a3f99a2e985bc9fe49b73670c137e1a57fad8608cc5beb708be9. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b4d4fd16921a6dd2cfac31de2b59eb83fececccfa18faf2e69d1d4d376a123. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e40b67aad2938ee08510621e1d1e97d7e3744c1ed684e945be65be0faafc17b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ddf30d590af2f9fe7f5c66dce377ab6e37997bcedab249d201cd61ce9af48d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115b88e0134919a06029f5fb5e3e3ebb82e20fa1b326bf8d3b0968d8451c7235. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a81f3760d390ee2c65f36a3437a02933e26615bad5627f63377f0ead80fad4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1500054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd719a4ba078e4c2d727dc27ef045d4f82c961e894f0b9bd1df84169da48a97fa. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:01:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb47a17f0b6d9bd798cb2a32c3d4c0526003dd167d84243481a9cedebf82115b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMM3V1500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b35cc2e31f16b576a3096fbcd280842d3b3b739ec9b984e103fd08a43e12252. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1704343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aab2cd8f8023af8267270cd9838cf1fe7884caaf8582b008c1f98a57dbfe297. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1725153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a39c9f4ce6df0700802eaf26a5ae63933d67edecd88dd4a341ecd5253c6af7. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1725155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0c2a0156a15ecb3c83cf9ee612c01cb3d5d6bd0db626cd47b074fbf8e6e157. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1725158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f2e347b034505303123fe0eaff03ea7d0b47f4f657b998d0d104dbbbef66d6. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1725159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec976076c130d1405f067b37f7b6b3ab7dec65c3b7c7a4625ef9c9f7a13c6c7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1804329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4cbc7bddcfdb92708200441e77bfbce4e1f28d3e84873acc9ffac1d6b14450. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1818021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735afa02118591c31d41626d99fb177287210dd98fa34e323d9b8e24841d7119. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1818029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cec83a8d4fe201192130cf4224ffb3baeb38f7a3b40491660e511c0bec0bbb4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1818034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5201b0b735afce7d9d704b8e24748b4a9b5be597b4cc4b536184633b2291049f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1900892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2e74385ba329428b4ae42e6ec89fe1562efe6b225f4334f78438188f5d34d9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1905478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf111cb431d3542995763ab56bad115871d3e89e392c99ea981adefbdb27781a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDHM1905480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756ce3706949b7859c9b4dc95ee56050f4f3b6d306c84c7db09a0f679ba8a679. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN71923036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147077d95fad85732ca30674c7903e7bceedb302627ebfc743606d37318cf8c4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN71923040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acf4360a5f464e6520bce8bddb9c9161b3e9ce67d9c6f070c6dba62abdec1b1. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN71923043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2b4a8493b59db6e68d418bbce856a871e43f4d27a8489584be031f4b535b08. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN71923044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09cc2ed968adb9424639922ccdb24d6b033cab4dbd2463e16748c059f0cd83b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN71923045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855bf8829a10e129901ac126ae42f85e9f204cebc41d10bc8789554981b0979a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYW2045444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14363796f600d55960a711032586b3083ef2d136db5b5a42a0be17d3b0f115ad. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82003139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7711311356adc8a2abd0b4b0711113a8933d98e37e65975e373918f529593243. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2256430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d15003975b65c06cf18219af829e719e04ee90146ca351d7f3df23a47242f72. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:00:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2256434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe8c5b1fd5ee1e0d13f543e05491f65d908fa151ceb7f25fa6cd71bb479636f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2256435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251ec2d45d0fd82634a76f3723c4838f1f26a1c06a380f186a5079082fb981ef. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2256437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551d04cb397c2c5cd9bececd39b49ff3585fe192ecf402d4bfd06e8f85550b6c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2256439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1d7129c219a7bd0bbeee1643fb1369504bcaa4fb0e9adac2211bb1f51c2eb9. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBF2366373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5292307320e5a2e9ff1a0155d12f4c008cab164929d9612e09d549fcc2b8b0b3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2836228358422681a8c0f1a0b344712494349d20aa43383cb7491ac5f13e8173. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5babf267124683064ad64d29e2a7d221da20692ddfe8b2f35e647b52ba78a87. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a488d6cd9b4d73ce642e36c28cb3a1e273765b7a88d2be7ae78e587368c064d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab943d68c314931a9ddba9c9c2cf53dcb06f2e4e5866afa949b52488cf1de44a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1584cb1cce04aedd040afc8dab629a46a2982457bce2d5ad8d44b1723fe866d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d66ac4e02065c6dce84b010b70cc4837c0be304a1743748362aead967148f5b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaded43f1bebfeff551990d1e407d65405997152f3ee7df34764475da33cacbf. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:38:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba294a62d3ef3c723170e2688b75ff754dc333a7a9f641bc38144002939eae2d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b702eeb58a8ceb47773cb2d00f4fd386918cef1c53130555660d92a0bad150. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92006ff22b13d07ae77c03e37c5fc2a633e9a1ff3fca3d444b709608bf1c19aa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f46676ec69754710242b2bc40ab5fdc5e6ac4650c9143692904f451e3c318cc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81555a2859e1231e397109312626229365e8afc29ed602d50b94fe139aa0d48. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8251c59d6c468d9ea47b0fec2641cda47571cdb56a3013f2c119d5f65b795369. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a4f5ab58d509af6ea82e5e7681d9faa2681101b759102e69139633ab15d838. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d48c3016875370eff9d433e2c8d222c01f05ada4d1a60089ea8cd1cf787bbcb. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d4cc79f03487203fc98a2cb9b13468650c1715b29d87251a62d692ee2ba3f7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6511c40a8af9309202b392fd08404f566fca2dcff558249a3e1e3f10fd8a010. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023e595d7fbbd3dd18bee52457cd025dd88a893af2ebcae70a8259f9a7c0a123. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97184725c6a832cdd0a8bab5e352d93ecbc4a3e93e09140fa3180d56875b2446. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081c50551280e490c1ff6179dbf4b1910676000c7d805f6ef4cf229049b541c7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b43a65360c154959869757c4f2acbba0d4be80c9781fd2900232a8d4c1e195. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de9a7f38f77cce62d2898bb43364a40a4befd4595a333a8fa3c87c44d8db63f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84a1793b61b6ea23d9d5b7a84ce16c8556b7f465d5064e48f829f0a563c1847. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42410951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0962a83319bbf171545df4c628ba718255d4140198f53b496fd4230b42b8b96. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6F2400296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be7b442431d361ab26ff0193eb2ad2eb39b3d4c2ae2a73b28d43a833bfb275e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2130125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f7e73531a470a5a6d7729394ad00e20421963051c98d76768dc34e376639bb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USJ3V2106227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d4247bc8154ad1f94e1c1fa9182a42da2ede69db133c970a4fe316e91785bb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2395922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10ffd45b8db560e8a0da09125c63cf2127d96c7dd897238895c6e19567b275e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2130138.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3094c035248a127da18b7970f3506f22f7c5912030f673432ebb0228e269678a. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62393144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb787718bde87863022d880d7e933d94c8e1ddf6b5a075fa91ac5e6845ccbd4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6G2419422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537491b2062a147bf848793b3f1f192004a98b415b366dd7bc4eb0c8e62e4474. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWW2395955.