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 0x7f3b79234543aba1f5b167aad6ce71e8df9ded29da1c89a648fcfe2e471d3502. 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/dca9ce6a-ae76-4181-9267-4462ccf3e986.json and https://artists.proofprofile.net/proofs/artist/dca9ce6a-ae76-4181-9267-4462ccf3e986.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 0x26b2db3f4dd00676b64b4071685d75f97d65f0396c3a4444824c08ffa78ed2ea. 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/QZES81988156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838201007a2241e2eca658b008173c4156e9b1ba42efdd639e9f749fc78d522c. 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/QZFZ71922670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c768de5a92c0fc632f2d242364710d706ae9316b498d8ec7ca95f5bd1740a7. 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/QZFYZ1933988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f49663c88bd5892b0bed162f49be2e244f80cb9646476d1f285e90ac9518077. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:36:03Z), 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/QZFZ61968340.
I Miss the Time We Spent Together, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf33083d9f95660badf5fbf5c3e1c2d6f25b34ad7ab7ed5cd687f360008eed6. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN61979677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fcd9526805b484ab731a9879c2dae5d3c07ed46c3331841a5a1f4d5d4f15bd. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZHN71912279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b962a0dcb6133ba230d82c82e31a3941aa3743944818f2d4c44ab55d4837d2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZHN81994540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96ecb14865641dc08171e3b5c391d72bad79578ab8023dae142d0b3bb5215b8. 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/QZK6Q1963295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b7d2fd5b99d03e29666b384c270a4740be6250169c6baf3531c5bdd05af50e. 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/QZFYW2011254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de5d896ff46388779fc61227f52b72110e8520d38362fad323d7a18b759e163. 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/QZFYX2030425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc528acbeeff1ae47a3bf4b8042fa8dc79b5c889b0a6e69f3a987bd65fec22573. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZFYZ2025264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baf98c368d73c9d55c1f3b4fe38e88fc06504838f97a8f0b2bb5c2f8ea49224. 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/QZFZ72001500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18000f8e68e6fc74dd12c36cca0e88dce887c78d1b1faaaa50ddbb74ede27d65. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZDA82023873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc383e80f347e7f95631505b900684fae95f870fffb1b6d2914258de776e258e8. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZDA82023875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa861be878e550ba6dec8c1b96832ae11ddb3c49595fbd18320d1245e03d1315. 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/QZES62047638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4af690af631abbad47fde6c7eee2f90c9608fec6a2c04504ab1c5848953b98b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHN62020578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace0d8511a18361b21a8057af6191a23ac8682eb9c58e4cbbd825aeaeeef343d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:48Z), 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/QZHN72065737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d3818c59bc5f11526e280e31e1f04c8e1bf115a004f980b88baae52a918e22. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:49Z), 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/QZK6L2004955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0205ee054aa64ce56f45b1f0f226f27d1108bd588b1dfd6c3892940a36e3c14. 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/QZK6F2059132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7926510a1c4809d527278a12baeecb1e2f69f01edc59bd6504f83899554225c. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZMER2065245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280d36782faa097d4416273f588b0dadd6226ab3853177c4fb141bead2056cef. 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/QZNWV2061957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3e60e9025dc24ebb54ecbb133bf1018392eaf9f3bc212ff91bd2a601aba26d. 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/QZES52163444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe236b1bf9101c3e725b8a4c7e56d0f4063be6d8af93c6ae21121eb5a32d73136. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZK6F2165742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21a6333b86e5e49e1679825c81dce299c4bafd8aeb2abb793e1cfdc61439bc2. 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/QZNWR2134602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf854528ea5eec79fd4f4f6d8d7069ec808f5c9ad6c7db376dd72ac5a33eeff. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:17:33Z), 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/QZNWY2178018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9472b73df0d470b66b27f48c3d75ec5d6749587e57bc06d2aa5dbcdcab94bd4b. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:20:20Z), 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/QZDA82231211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd310c1a8a753e18cb9dfb72cc6969ce3191130d7dc7dc96d5e86d3f66c5b35b6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZDA82231212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1155ab159ce3a3256ba579e2ade997395495275043677c41d38d366d1f0e3b37. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:29:29Z), 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/QZDA82231213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9b1d2ec0fb963e1a3107b898820adfa4c91a8595782b58b1274a67c05b24a2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZDA82231214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e938a7c394feb21cc76f181ef8e1b5ba58152146f690f5f4826d83520800729. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZNWT2287566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc4b525e739ca27ce2d838a73d92452e7ddf9c6dade7eacdf3aa295b6bc21b4. 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/QZTV32246207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cfcf46c5168963f73fa224bb621fe6fc61258ff130238d3d01336cb7a343f9. 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/USLZJ2337470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744decb61d8565c139b5d7c25f42e2ca3ea3564e4b3e3fd18fc1c3d4bb4bf4b1. 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/QZZ8B2453784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31adbfc1d8dd9e423ebddb852873006d9059286947e37af07e39a480f440995. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ8B2498188.