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 0x6689354814d8cc4ac2060900b217e67dbed40218b0aaf258d8020c2f05e3ee41. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afa1bf4b-7763-414b-94c8-56d6ea7a63d6.json and https://artists.proofprofile.net/proofs/artist/afa1bf4b-7763-414b-94c8-56d6ea7a63d6.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 0xa44be40e60b85331a5ab3a6734ce044973d8ca6f8858d850742b9efa10192ba6. 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/TCJPY2367755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55adcfd5b4cdfc99daffe7d2ef9282ea00efd91c0f8220df45d1b3b64b88830. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:44Z), 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/TCJPY2367710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4e0c24bbfee824b168a369a801067d426d08cd7bff17bd402f7cc563128119. 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/TCJPY2367742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2284195e0de822552c081a13fb6ab588ebc67f195384bc4e337dce52efbd2b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:25:53Z), 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/TCJPY2367738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd495b1668fadde8b56934b80d863cf88b5a88a7042994ac52a468198910b6f0e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:09:11Z), 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/TCJPY2367720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d974508691202d8609966c199cb44c66bd79cc53a7d46236c1f1b1bee11361. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:04:17Z), 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/TCJPY2367751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96671bb9e35dcb5bacbb0162bcfc172eea74cc2fc0c74720bd7c8bc0bf064026. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCJPY2367733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa127e4d509dc7f93e786269587b2924848d0395e738ed6378a9f6617be84b66d. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPY2367754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8185216c78a9d340ddc3da6c2e9537841311b80df301f8045d096e36db0b1aa8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPB2446667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a04e7018646e52d417a14e119561592397bc1b004d4b63213a699e5293956. 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/TCJPB2446674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb734d014d254d60af378a95c3a99f49f5a4549161c9f48290499d2d58dfaf6. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/JPR502503195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61352814902aad85e166d3a4530c85da35e8893741a8f31cc8fcea40dcad819d. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPH2560912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a79d5af2b931f1b46c55b8eb61077f0806f039f5fd2545e4cb803ac9630216. 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/TCJPH2561179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a3efb92dc18b5b894d08ccdf85f3b4011d7f5a0ba820387ed73ce846fa7693. 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/TCJPH2561276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2e2e8fd0a472da2e676bf902726fc0ad22e67ae6fd2e21cc9994a37d55d441. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPH2580816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bc6f5e0d5984eb597f4c617821a993103434ec9b8816b88082d11ad756ca15. 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/TCJPJ2557784.