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 0x0b86534eeef3e2bcf0aecd731b9231c46e2530811e540b50a905fdbf2d79f5fa. 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/617b7673-504e-4d04-a3e8-c920bdab9df5.json and https://artists.proofprofile.net/proofs/artist/617b7673-504e-4d04-a3e8-c920bdab9df5.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 0xcccd71f660ff3ab9ccec18c87c5b2f093cd1e022562ddf6a5abc9fd9e7cb60c6. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:00:53Z), 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/FRX282207558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884cb2a7ba2deed772b56e9d63742a13561ee137e4393f7a88a3d832154a80c2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX282254311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493c4bf6c9a33ab957834b698f1dd8c2aa84861e57c3a28e7d0da79bd51059a4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:53Z), 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/GX8KD2245943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf37d7396d4a28694267c1e5a64720b28ee77c77e5a0ca9272db1d7bed16005d. 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/DGA062234693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96cb4673f5f1ac00a0f7ae43a60354aa5ca717efe59fca6fa9a18e5d92c19ee. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/FRX762337948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717c1e967e5fabf4ebe3c097e72b50d2e84b0aa894c9b9a902fc3dbc1c012792. 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/FRX872334091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1110ad975b1786fbc2e1aea589094a6d78926a1cfcbdae65bdc684744c1a2. 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/DGA072309891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa124fca0a765da1904c190716d35380266eca7349cda6bfd72d3e5f6ad93265d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:01:48Z), 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/DGA092370279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a1ccfb953577d5b6184243b12031be9ead710a27b45ae03db4894d513aea5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DGA0Q2301086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa094d37aea65bf31cd513a29ed9ab2c7f91690b59ec7920b7975ae162447cde9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR96X2481779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dc93fbb8890619b1d67241eae5b0b49b125faaff82c22c652d524286292d4d. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA072481818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f3ead395ca88ef32129de4237952de6147b774f344b0e4428f0096115449b4. 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/QMDA72413907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc571f9a03c113b4070af040d27b94e040713a291dab88e14a1bd6eed090a91. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QMFMF2438704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a81d118e61ae07d5d314b1544c5ad0b5ae5f4ce8d0d32e0b41eff9ef6dbe4e. 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/QMFMF2431529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324ea8e1b1229e6ab37b1486066aa8518924afff6e2334668c7058dbf7634c23. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QMFMF2431555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf75f641ae41dac66bb22105d3db9452c6a785faa1b59403aa0034d928e18bbe. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:20Z), 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/QMFMF2431559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c8a9cb39c2c2fa8a326a3e64de1b65e4a6ab6349cf4c0392f8a6bde8ed049d. 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/QMFMF2431569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49aa3e4e8ee01b296cf62cd375afa7541de3debdb2caa3770a98a709ba3d177. 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/DGA0L2473644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de72a75d1d755d64f8a6a81a90b812ba5576531d6d17efdf55d0bf7eb59bf94. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/FRX282419023.