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 0x1e1636686c19b5f8685ad7797141b0262359875a6d7d6fc897f8596e82a37f24. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2649805-5737-4e41-8a35-3b37d8bdec46.json and https://artists.proofprofile.net/proofs/artist/f2649805-5737-4e41-8a35-3b37d8bdec46.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 0xdfe37a69d83cf89a94758b9539caed5045d75ce884b84624d7b67684f9c776b9. 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/FRX762292071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c227014553fc094c56dee0c0ddf32de15f4218fb2d56670c952ab51822cc35. 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/FR10S2304955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25d41297924cb129b89c8a9df4b2df2ba3783dd0bf61047d7f411dba4ad4e45. 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/FRX762421563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c23fa741f78b61e0ee6bbb603e555665e358f616ab47ca17a341afacb7197cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762421564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2323ea84485813356dbf91b7bc58a000c8e98b5c29fa7ba4fe5123621752cf9. 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/FRX762421565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8d35de5e4aba1a019f31953ef8b0c3eec2bee859dae5c83e458e73798f7d40. 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/FRX762421566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eb4724143d821883b6675b3f24c5af09c3be9b0dd0e1bf0d7263e4e3c53e00. 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/FRX762421567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8984d7c7c9a9cd9b63624a8154e5047c01c35f2fb813936c8108d037ff19885. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762421568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f84fce42d0935b726cf94c742e79a67b97917bb5eb60a4929f0ea8f0b4a3fd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282419644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eef17e450dfaa6d123b3da338b8bd4e0e16f8ffe51c4309c5c9d7f640e753aa. 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/FRX762421570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc175397fd36114e894fcbea28fde32388c7c1cde6444b1b2b194508316f9559c. 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/FRX762421571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607810ccfc43c934658cca2235a196c5a67c7a6307f13aa31ae15832e54b7f2c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762421573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087149dff31f01acf002fa0d212da7f9753d44f2525dced5f4ff4948133189c7. 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/FRX762421574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd91ec4588b7c263a5dbe316cfe9f9e72c3b7e2e291864c2b3fcc8916d9f0a0. 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/FRX762421575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883f76c2d2d09ed32748b2ab1fcd74b0ea6d3ea985a068eecfde8e549323bb28. 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/FRX762421576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51df47be3d4c31a6d200bf13f8f174ed98eed4af74b438b7506f21b6414c8142. 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/FR96X2446040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd14832503bb4ff60cc40a65b206d235fc5ba0ba8130decfe4c1de264695afc0. 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/FR9W12351252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36a1902c36171403939b32137f117006050f52294a17a63f62535b00fd9a912. 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/FRIDO2314317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd14832503bb4ff60cc40a65b206d235fc5ba0ba8130decfe4c1de264695afc0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12351252.