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 0x310e09f121cc8c1cd9d68e2c05160ee35af59d71d4ce054dedcf5e95bb4e070f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7d4e997-bf54-4686-afcb-42795f01fde5.json and https://artists.proofprofile.net/proofs/artist/c7d4e997-bf54-4686-afcb-42795f01fde5.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 0xe8de3ce947311bddbd0e8ba6c87255a1d80bb4451727bb6fab0e667e3fe286c0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ARQIW2506073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033a7a8b6c006ea08479c91c183d239d238f5e475db11bbc483a60bcb34a54b2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:10:36Z), 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/ARQIW2506084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f2935cbd366f9ba83381e5caa351ba705c604b9e64874aeff51b8f0649da9f. 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/ARQIW2506070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d998419a1b837580f635770d60b1dbf3a28a25ef464ff2248e81164504bfb52. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:34:59Z), 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/ARQIW2506086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72b1b83300fd479d12946a8634fb03af02d73066f9b1dc208312ca5ec17b3f9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:40Z), 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/ARQIW2506074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0d93a184f4b098cf943533f7d6c95269336168b5f867e3c40b13d887e6eff6. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:49:16Z), 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/ARQIW2506080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3afa0b18352330ff19e25b0412a1ba762c25f07922056656163ca984dd1b6b5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:35Z), 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/ARQIW2506081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293cc83eff93235f9bf092c53103c46a5966d3d2b8e1f724490e7fe340e0ed8e. 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/ARQIW2506067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e0c75987aedc991b96600c75172f8070b431b814fe1a8c0790462fe4fe86b0. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:25:53Z), 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/ARQIW2506078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b23f41833f01b698b2664fb488b3c3c89ef6c54a80446c159f89bc4992bb41. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:44:28Z), 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/ARQIW2506068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aeee37169090ee2847b4b2de2387c19f9974f6be1a041e5fa099581dfe757d. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:12:17Z), 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/ARQIW2506069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00271a029cb4fd670d50690ad8534965b4c13d14a9a1a8977be014f2dd746ea8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:05:19Z), 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/ARQIW2506079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6059b260d989b841982032613fe980f67de1cb3db3629d3bcfaee282861473e. 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/ARQIW2506082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ab4c7da0c2b01331209de8edce0951cc189c17adecdb17fffcd9db2675826e. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T10:27:46Z), 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/ARQIW2506083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d093836fef8660741ba2fa6b7c1688e64d51af1dfbe7ed02bd44417df617077. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ARQIW2506075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816f398be0fedd159cb88a41557c96cc57e8bed786d581f5cd207fb7dc05d4da. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:10:23Z), 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/ARQIW2506072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3e11f4a7dea74008c766ca241396b2a6c6f346c29f4dca1c9dcb95b431b89b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:32Z), 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/ARQIW2506085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff8e80e320667810d5c0a481fb16f41197997f07da867441fa85dd60a28d355. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:06Z), 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/ARQIW2506071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d22521bf76f6b45a61993cdff8f3f14446563d2742595cbc0081ed4dcdda1a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:34:22Z), 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/ARQIW2506077.