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 0xaa639db31415d1d97a8e183eacd315f9f268a1c96c46515494569a9bb2e69a21. 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/103209c7-c3b8-4711-a067-b3f8ac5321c9.json and https://artists.proofprofile.net/proofs/artist/103209c7-c3b8-4711-a067-b3f8ac5321c9.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 0x3fafd85adff3784c5812437cdaeec99a8eb5428a2c23085a1f01c258936e563e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZEKE2085596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1f3104b000fc2e8dc277b44b0110a2f4a4a8fccdbf918a48476ff53329096c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:19:32Z), 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/QZEKE2085597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9080cf1bd8e3ba82976f8c047da36a593bf5286c756484d3ad9a912e3cbaa9b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:01Z), 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/QZEKE2085598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5143b85d74185472d0983cafbec3481a2dcd1c3bfb796871ee4475b1d4554e04. 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/QZEKE2085599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb008f4d8f7c5680a670e0a4fdd79e9d7bb208bca89694147d65e27c5f46896cd. 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/QZEKE2085600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79379fc68f67d0054d7c4989f2693fc999b8e09b7b9742ca629db3de05702c57. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:49Z), 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/QZEKE2085601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65680cf8af033a934e2decc4d200bcbe295b3a9d43fe3d6a423351501825b03e. 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/QZEKE2085602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1845b1eef76bc4901969964226f5ca41a88a5e03e0e870312fc5fa735861711e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZEKE2085603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6239bf0842895298fb5db92b4800c1cbba2ae1125682d12daf48807b09d4a12. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZEKE2085605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bf45effbacb8a687c2add96d357a1c322a235d0d6435a79795ca731eeff4ec. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:36Z), 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/QZEKE2084790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18699f2a2f1f279ee4a7eaec29a8d7d5d9b1ab577d6e7a14e22d4aa62f7f7bad. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZEKE2084791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108ccfa49ff45446d80e88eb6ddb15369d6ec5ea11004b007225a1618b9985dc. 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/QZEKE2084792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2047928b31530d7cc9eb84ebee9522a5065d59ba51b731d92da2eb522f18bb77. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZEKE2084793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81d58e470bc2431cf85c240a38e62ccf6a288345fd2bfda78fffdf9a88d6efc. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZEKE2084794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7998c17d147b99da0f866c6e092bd4437b333502e3768038f933b028555a0b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZEKE2084795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baa867eb32d458f89d1807c3a0c544a77bcf761e698b539094c987d0ace9f61. 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/QZEKE2084796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69405e5a8fb115be70f7a3bcb3db2d224f79e4bc49ed65079816f39c64094518. 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/QZEKE2084797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b37ceb0cbce966792e11218dbc9c31e433a50098b64f60c3f73759c3cbca4c. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZEKE2084798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d51ff709a0503c5b1e3f65da100e15d471db24d1e935c7938cc4bdb7792193. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:13:32Z), 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/QZEKE2084799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c469b278a90f1043ec27e9b49f42feccfd444c74535ce9c240b9f57096c7abf. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/KSA012299798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db7655bcc28f4770efaa56a30fc9afef3289d1cb8282364e4896cd1bccd1cfb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/KSA012299800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb354a5c24690a6f3f9b252f0e1ac2b002e15386df2779c71c70dad36d8b1e486. 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/KSA002301862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3912383632da843227ffd1b43a68d786ec9aeb6627a7ee8fc1f7fd4c1396cc64. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/KSA002301866.