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 0x49dc8030c7adc296782e2b120ee049e42cb1ef19e0452b006ddbd73fc3ef241a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bd12997-d8b5-4b79-8933-f0545b7007c5.json and https://artists.proofprofile.net/proofs/artist/1bd12997-d8b5-4b79-8933-f0545b7007c5.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 0xde830bc8573f0ba11a0de0ffcd09dba4e81c9e1213e654ac5006a4a65c93074e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR8GV2436830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea01cc920bf04e28f16eb2117a82950b089fc1a4a34c76ac6241f85488d1f490. 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/QZWFM2371355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884a62d9e5ec3aa9bb983e77b6d1ae3df6260ff640f62fa97db875c25b77a8fe. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:58:53Z), 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/TCACS1677201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca921970b76ffc55ce43bccd93c69b387b60054d1ace079880c2eb0e54a4744c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCACT1646576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94df2d34bf902da5ef2f8259058311fba922df724cb43f942571d40dbce3cdc1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:36:41Z), 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/TCAET2075006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136eeae42289043eca2d47e884d3b1c62cb1f0ea90089a69bc9618cca35a48d0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAFH2099455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1927c2fcb25d49d3ec570beb9959e20a3566e1cb0366f78bc4d61e92da02a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CH6542141680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4c70df4a1774d07ab183d35b91444aadc0a0316c7aff355f4733f008cb1fad. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:26Z), 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/QZMEQ2190103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e911affeef7a90fe6f7f346c2cb7a89ba5c26aea9f786c8863e7c7ef18f49b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCAFZ2118758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde69404a00d4d996fd09c231a7f56de60b350a2e5a9e8b8c9a1ae0149c51aa12. 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/CH6542208998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a39afa6b76a9dd99e60edf4aba2e8708bc2459dd50129869a5c070d36eeddb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAGR2270904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b3e7f2e41be7d854ea6702e6d4e020761849561b1bb0de797337549b2cc97d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZWDE2436463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58726bc480368917b9bd5dfd3b57eb8885e36e14c2bca6b61eed69a6ff8c2b02. 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/QZZ8B2317325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffe96f69f019697c27c841f7a6489eee0248f5263077e4f723443f20440fac6. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR8GV2340410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851e44fa27eb5af200e2a35fb8d82957fd209ae2e8405f1b332ddee1f1b52426. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR8GV2340420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0348a9f5b2e937786a69c592c93584f65930f8ed96ad91c829642ba46d366c1e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLZJ2366688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b52094f1ac9f0dd8f5475556fe53820dcff71db41aa0f1ecc2ddf5407e2637e. 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/FR8GV2340450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027d8b86f56c21c2e138f05338bf90df937c29b0177b7711e4e849538a7369ac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR8GV2340470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22c60d9dc5a661f6beb448575dc9e4de9e614e542e1f751ec433a902d0a05e9. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:29:53Z), 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/FR8GV2340480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34902654f95ecde87c294b6d15ae5698a0f37c4710cf3855127190e60a12584b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR8GV2348110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64ce9fef21010053f1037457489610b39d1cd2b6b9880ab410f291cf9d8f986. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:29:10Z), 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/FR8GV2352730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eb07f0579ca402ef1d95ac3fd5a6f34e742d4c4e6d5620c03cddcbe861bee0. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FR8GV2415910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151f10a1958b2c0dfc78da48f6306199acff1c03aa3d1900c9b51b6726910285. 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/FR8GV2415920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670a226ea796d4a56d20f487aaad5cef66d1ebe01d101e048aaa661863bbbc24. 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/QZWFP2379260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5325eee24dcefacba7b7738dba69ef5426c6c5dba07659c7c17990c6db6f62. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR8GV2423970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0650bd0d1e77d10054a50fa5b6eb650936790f32cb2d661f1d29c14f305f7a10. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZEB2430224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c74f6e7a7205c9103b3392433caf0b566d9f669df3a4b9bbf2fce0ab74d39e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR8GV2528480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58950e0e43d1dc0d3c22fbc797f627ca313000ebbd1621daf53d10221bfa6b3. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GXHG92594076.