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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e31d443be5a4f344a0a528f3c4ab58c2ec490c31f1e9eb6d3a1623076ec64c. 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/deb556cc-9ff9-4782-8f7d-51e4b22c6af5.json and https://artists.proofprofile.net/proofs/artist/deb556cc-9ff9-4782-8f7d-51e4b22c6af5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Irish Rebel Singer (Ireland Longs to Be Free) [Live]
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f23e0e7376dcb2afd7596cbefc8cc33e347b40e2fe704f3ac868568520779ca. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCAES2054860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bddb3fb6e37344102defd0cdfe725a368b5b12d1bf0f3eb813fae675df04fe0. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAES2054875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd255fd31ab71e59f140fb79aee03dbb80c8f75fd98127f44a20bbd4ccde8f498. 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/TCAES2054886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb97eab8ba81fdd0040379805078124634e0ea4944b83b3b8f5624c02ae01f7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAES2054916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd1a8e601a5e4b8550bd328990e8b6e5b9bda970d6b36021b1a47041029b3d5. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/TCAES2054942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec4c7b9d54dbba970cdd81dae0fe37ca8cdb9f2c1224fb757bd8082668b0754. 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/TCAES2054953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4328038c0cf2fbbb4bad5e0f399beb8b4a68f84ddbf9eee4b04bcb88c6226954. 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/TCAFK2159493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8394438258966d366b9c772dd053f3fece3da8b50fd1404791818e9b328bd9ec. 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/TCAFK2159496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18690e750cb04fb077813a2c7915f90b8e96e0d50b8849a5569602454f3c1cc7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAFK2159509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bb765ac9ffc4a4cb33a8712ab0d1a5e89c2b1f236f5c06acb111dc8585bea6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAFK2159512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91fa3c72485231c0734152467544c99362bdc45f187c8076e05bd8999c2ceb9. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/TCAFK2159525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cd671e4933127107972756d130f4cf15cd4ec48ab058e8ff70de8aa02afef0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAFK2159533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4890e2a871d5b5f7372ebb4cba3d500869f776bade188e8e93ff301b8eee6689. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAFK2159538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91351793cd43e59d127c3304f466fd71eb35de1fad72b6f7fad989990e5c06d0. 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/TCAFO2154492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08b590fb793bd7042c2eba6d84b230dd608dd32089a2e36a527bae5ea531c91. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAGD2272375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913a9763d07deace98d9571645cc393213d5efa7072e74f03148128690265b5d. 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/TCAGS2213224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df12ce559dcbfe66ac0101ebb0192e90d20e5e867820c410c9bde456d652738. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAHA2382294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d5addeceafb7d98b0592699c4e9665d1e228fc4ed2beb8d3981fdd747bc662. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/TCAHW2497221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c346ef37811dc755798d12ce2792612f8eeac4fb16e2b33698292e80b93e01. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHW2497231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dabd4789166ad9aef7a64b1c0534694f757eea29503d15a8c50149fced7448. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAHW2497239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cc664c21d94bd9f464f78c4d68764bbe7c1e59a0154bfb0357c2b56271df47. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAHW2497246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a8173b1450382da5b9dbde0fc9bee85e6173778aa52ebdc69f663293e9b352. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAHW2497260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bc7e2ce43349f6df46838f036a6cd8de525108903a9bcc1abce953c5942413. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/TCAHW2497265.