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 0xea8bb88bf2d2fd043f79be9166c8f9b78037beb8c53731062ab01b6de7a67349. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6511b8ff-03ef-4955-b820-9dd36839defa.json and https://artists.proofprofile.net/proofs/artist/6511b8ff-03ef-4955-b820-9dd36839defa.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 0xa7fee5175c64d09565902772611654f1155b2593e958d20724875161a61081e7. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/SE6I32355889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958d658a489a2ff95e853583a5999e61b996af4b3a7f355c05103d1a56fe4660. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:24Z), 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/SE6I32355890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78a03b9eab8363ce508f94df865d92e073b78d9adbae14d66c6d61852e49a48. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6I32355891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae177d6bf79c5d1154dc3afeed180da9c850ea801ccb25ca49db39017af82310. 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/SE6I32355892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbf3b9105a78aee25d3bfc59812abb3ab39b8a0679fdc4878b9eb04fabb5bf1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SE6I32355894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7673a5f66466c8e01aabc6c68a4de5541fdb3bf02dbe3588854b01a0c872bf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE6I32355895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5be69f0340497cc15356737e697e6e5dc48b67b73c92e746ba0db1fee44c91. 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/SE6I32355897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c692a5d667ddfe331e0fde315cfa7e8c11429a57a406be0618ac903ceb0633. 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/SE6I32355898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d596b2bd712cd00677cdda17864a5d11bdbb72a6c98907d495f9140d55cfe8. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:02:31Z), 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/SE6I32355900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70293a7f6206cd1cb060f3cbdfcabbe65db9323e66d5014bdb8fa669ab1f6588. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/SE6I32355902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3cac191edbdfa0cbcab69923b7aead93829008591a99242d4aeb1a6ddc1053. 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/SE6I32355903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc940d30f51772db12b1e42894a93556312ccadb873e8ad52481b729f69188689. 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/SE6I32355904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf327e7c47f24142f2418ad7204deadda06f0451f954922688e260b29481527. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:22Z), 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/SE6I32355905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb820b16f1fa3979a0ccfc1310d1d95c1d2466a78870f46a03c0c66eb187b8423. 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/SE6I32370065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba526f04999d5ec1663f06e0da1dfce8963babee49dcbab6991f880a971b99cf. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:11:03Z), 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/SE6I32370066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d898278ee9f03d9526f797563621517111caac7a2435f5aca3d1417fbafaac. 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/SE6I32370068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ebe74cb63c3047d6195a8b8fdd03cd2db3ba0b8c957f1319d581dea585ff80. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:51:18Z), 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/SE6I32370069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3dac36cedcdc45a4dedca6bfd1728b8de3f303f614ad219cc07527880b08ad. 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/SE6I32370074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f3f69c1b4799adc55253b5d22e3fcc9ffde46b457cb74b33decc689966b53a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6I32370075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bd7b204d0251328c5200d2626bcb55a6e57d13915c38c6f0d391be701b9029. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/SE6I32370076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd882e939cbf1bb724ce0c5c3f5758102c5c6c696aa4757a0170b97199fca5ce6. 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/SE6I32370078.