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 0x7aeee47393ab6914313df6fbfecc6b0c74488246347a29416d676d25e590023d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d43f3d0-aa41-4536-968c-29dda618dee5.json and https://artists.proofprofile.net/proofs/artist/9d43f3d0-aa41-4536-968c-29dda618dee5.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 0x909bcb39ffc9c6ece7ce6e2036fa384f1f27c247f779dbf729c64085853f9cd1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCABK1240338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01f4cc7340dd40c57c0ab7689033d18d952eabe382e57dc6ed920ab487d7fda. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRU701300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaf2d5270098e1720a329ec5ee91affe77331a5991222100c840201f512ded2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRU701400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd776646652b3575e0bd25170ffdf6e3c887a30a88ddcaa25ec12433a5f59b3bc. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:34Z), 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/QMEZE1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68473b2b42b35830d60704fd78159500681e35e6d9c004d3367cce2a98ca712. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:14:40Z), 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/QM24S1925496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ddc34e90e6b576f98de5e00b793b79103dae78ed7982428cb996c53124e281. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM24S2000528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e41e2079f70765594e2f3788713d1744d1cf2d93f541036fe34f89d02d286d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:42:48Z), 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/AU9Z12200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48782effa93040ce54a6016a4956097cc515a89473d95b14ea21a082aad413fd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKPL2004073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48782effa93040ce54a6016a4956097cc515a89473d95b14ea21a082aad413fd. 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/GBKPL2004073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe496045417c3bf4786c03d861bb6cdc31283640f4601364176b68e1ac621cc98. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCJ81501308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c99a490cfc6d5ba6a6746af28c8a535e7329538050f8f507d6cbcbbc89d3679. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX8LE2399871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35014f989bf90f240817c20ee3cbe8f82f1ceb8372601c8339b3ba8a4f68a7a0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRU701500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6efec091e44e10b37a3b1742c45b8a4bbf00534da27e75edb4931897341e442. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AULI01284360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a48d441896b9a205404da8e1efa1d5a0530338788b2763f113060983e52045. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AULI01285660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cdef8318d1c053736fde16f08948154dd285bb4a14e598d030aea91b0db2d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AULI01284200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e8be776e98ef8e2379d5a6f0b617f6160d03f8f004c5439664722746979646. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRU701300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac5dc0a586980a6a6171312f17f3774be418c3c4656fd48d73182a5cca2ae45. 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/FRU701400023.