1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x901abd46b938677b64539cc7e5cfaa32091aabf6f7bd20642a2f221c3ac9bcf3. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9377da08-5a99-42e7-9bbf-a9fbac7a6ae2.json and https://artists.proofprofile.net/proofs/artist/9377da08-5a99-42e7-9bbf-a9fbac7a6ae2.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 → block OTSBitcoinBlock must exist at that height 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 0x35f4b984d34e61a50549210ef3024d7726f82d9acaf2bda880e593f5bd89711d. 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/PLI360725180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a24580157d6f9735ec78ab0cd51ecb486ce72cd22c684bf3a461fc643e1dbe. 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/PLI366055050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5410f579f9fcf8f60992621ecd1b357a59d4ca40a3e7f87b024350f3d8de7377. 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/PLI366055060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d6523f514304a7c512da625f5d1f0b0546213f31cdfb886394c9589315c43f. 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/PLI361141880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2709071acaac4fdac3e61bdebc34a92154a7e3ca7895242f44a7e8e69a425743. 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/PLI366055080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a6c3784766ee1bdeeea3b59289070a6da8e9dbb3ab5a1f9f769e8e25e88c17. 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/PLI366055090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831dc2c657cdff039e83b6e8c2c887f367cbe606c1eed8a185a192a5354c1526. 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/PLI365026830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f9b536fc7d5f3e1aa967e985cdbf7b99443de4577d2d5b889ea5b41aa285a0. 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/PLI366055160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8c772310981b696b7d81dc2ea882bd6647ff2011097dd48e9702f2bf5fae91. 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/PLI363021600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a6e3631de5165a9f71062b73b6abf53757e03bcaff8e8d9f92bcaefb1d0488. 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/PLI366055100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f09f2a451e423d8372b29c14854d6ccafaf3c07369c79584ba32a49897fcf7. 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/PLI366055110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ca24da4b6bf6afd2114aca26eaba27d5dd649559efbd58d1903aea0b0605ad. 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/PLI360406750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c44a4444b0fd5334bbedfce7117183c6507abdd6c923c1ba1bbd8d7b498ad86. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PLI366055130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a4ae8429ebfdeaaf69c896fd8152a45085a0862d4f5f8743f3142d96f44ec2. 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/PLI366055170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf742e958ab6e9a9b30de4ace0b0bcc06e828473556aa57ca8a558829b361c3f4. 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/PLI365119230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5416f77e3fc3680b4a65e09e55a79f33ca293a6f2d233058f65edd48fe4ee4. 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/PLI367116930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae408040e4a7942465f76584d2b5cdf18d23e447bbfc1fb993faf8a97a2b9bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLI364721250.