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 0x55e841d1c4a41c15d1122845da007cba311d70ca9246bebd65fd37a78c0b7e56. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b97a842-1b7c-44d1-b9ea-aa832649c161.json and https://artists.proofprofile.net/proofs/artist/2b97a842-1b7c-44d1-b9ea-aa832649c161.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 0xa0e76eecc32ef135f28b7b3380e52f34bcf3d3c6fdebe0d97c4628d8f64f7b07. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/PEMG99901001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2180b98958d082fd2de80a00c3e5aa3def589cf15214a8004f161f3af4fde7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/PEMG99901002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d944e5863b1113811d3e27e84b1a5f06c70676322e7690b3dadba696b6267c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:12Z), 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/PEMG99901003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a36f3d916cbedccc06ed64a18ad9e499c02aea9a4c0bed4b5c5ff9af881752. 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/PEMG99901006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74345cbe78dafbeb6b4fed6f0327f8d8d1dbc242aec3c5892e923a876a09672. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/PEMG99901007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9267ac35f1407e58659e0cc08b0c4c422b5d1d111f5827aeed15ec8d34d3a4. 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/PEMG99901008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad2861b98bc4f2abe2b9a7aa9a9ab5ffb444480a6860339ec641a9a0f217251. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PEMG99901010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d15b025c38dac95f07180c56b720e80b375dbb7ced213bd3814f09c84f64df5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/PEMG99901011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4903aba9797c93cdf0fa61205210e1f5181d16b663dd473d71e0b1f821fd708. 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/PEMG99901012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd571daa75a72f53b03fe6b26668708513c8ed10bef3f74a8551ee5a781d652c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PEMG99901015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea51101730077d474f7bfce2c4c91036eab6d86be3abb914790903cac1a3e47a. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/PEMG99901016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf805ea2cfe708e52c110008ae343e281c63026e252727d98117dd346f0e17d4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PEMG99901018.