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 0x8c048190f59ba30ceaf9a460f74228fdbc106a728f355f38f85adc3604297656. 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/a1d1c662-a0ec-4bba-8f82-ec75034662c6.json and https://artists.proofprofile.net/proofs/artist/a1d1c662-a0ec-4bba-8f82-ec75034662c6.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 0x67d46afd55588ac61e7cda7a9fa158b7b4516e5321bada4acc0449075bf6a4a5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX282039863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014e48a4d48225108ac82499246cc7f4bbb24c2ac7d043d1988d3107d1aac472. 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/FRX871527920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fed655286c6164b1bce1fb5a3c0784f9773c972e152b861adafa6c41e213cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX871527921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca46a57db8c851f1e7742a75f5a5224f3d94374c4fc8f7cb5bc9af358c30e32f. 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/FRX871527922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00249c2a8ebb676d52cdb2dd1a73929710468819b3fcc5f61cb41bd37a78c6a0. 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/FRX871527923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113c82554a268961e05e6316784d6a21b187617d830c89bdd46b50f7c3397ba2. 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/FRX871527924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28e7d4ed6eee59197f3ead6dece4a3597fe7a6526cee9acc2d13f815be3ece2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX871527925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2513846a8f6680099f431a35786f4d8fd60231de6bcb27ab0c88030b1ed2dc65. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX871527927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35b77aa421ecfe78571b411ad3186c060e14fe531319e2d7281d61e8d068ffd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX871527928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa0911c8dfa97d29fdba89e337ca92a08b514b95388531250f90e2d15844725. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX871527929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab3d89bb881a59e5ebf6551ac1ef2066ddc2fd91671bbb7be690a820bf12b14. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX871527930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfd77aee4ee002c2f2290aeddc96a378ee661ebdefcde311ae548fbc48c60be. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX871527931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4b814feac24898400325e11cd3817d8a0279e88007fd76ddfc6ae0a05bfa61. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX871513614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a617d5e7a74581a96ea29423ce6c5262958e71f7249488bf1897a2c8fdb8b4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FRX871513615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5171ed83bbabbc33f0c1965dcbf063f1410628b88084081dd67d0518012e141. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/FRX871513617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd970d3794fbbaffafd0b0ef0c45470fad796e04ed1fce827a95e6ee90d057da4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX871513622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7fc95f2c610625062fe9c9bdb72b190635ee88a44bf2d031cbe9bdcf7487f1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX871513623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b67ed11e23bb7a4c64ab55cf0b78fe707288555d7472c0ea383f0a41098a301. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/FR2X41887972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fd21d0afa04e72bbd19935a983e0e82a636fbcdab6a0576108a8f553e4b5a0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR2X41887974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3133f20991bfc5d3e7333c24062bee039de48b623791379b1fe2ff1482db91eb. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR2X41917064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac25b2d3058dbf3e4ad28922494b87c78ad841d1964ae1bc19bfd2a58b34172a. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/FR10S2269368.