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 0x4086304b63e874cc0ff8bb7e822eacbc5d57019850963f6b79a531fbfea6e081. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c881e040-5107-4576-9cb7-4ef424edf84c.json and https://artists.proofprofile.net/proofs/artist/c881e040-5107-4576-9cb7-4ef424edf84c.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 0xa1cdbbeb74892224ec4a943ec6bb6fc6f257e0e0a36d71ee7c27a27e90c0e811. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBSMU7759665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe03591e0e5ee7603021adc84730759ded3326669cc4c611cd69699c8ebd934a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBSMU7759667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5827ef1c4f6de3dab2990abdeeaea8fdda01b1dd94acb6c57c8ebb75b28df9ca. 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/GBSMU7759669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884688f2a82302bb5e96fff23ea9c6a7dc668f71da5c3e916089481d8c70d0c9. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:35:45Z), 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/GBSMU7759671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7632bacf5a7f65bdae5d3912bfdf4c1b757a21f5e8fedf048ff41dbf7f7e0f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:50:40Z), 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/GBSMU7759673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04abe3172f296e9bdf3183bfa5f0916fee56d3cb072130f737c69e2798b36060. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:28:00Z), 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/GBSMU7759674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66884ed26761d7eec9f509abfeee3fb49a167ee9d09387f868beb657e246a408. 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/GBSMU8715799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9b8e09fc667bdec22504ca2470886ee5e4514fa79ae3736bb4245c5939fdda. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBSMU8715800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367b3d6a6a74d1a003f9121957c4bdae7280d011f019d62b3aafd87bcd3c2b85. 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/GBSMU8715801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b3f49718c7e54543c6c7220f5c3860905c477e05cf4b67fda0110aa259ad70. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBSMU8715802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb5d791ceb9c4fee18a668c844e731b8a41692b6d4df40194e0760d89178f3a. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBSMU8715803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7774534f645c1d529e9d73da1246e6ddeb15017605ed4a3f486c8e2b56f959. 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/GBSMU8715804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c117569e3b800148cd5372da2f41aacd2fa226b757926aa87e6b0a06cf5551. 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/GBSMU8715805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147be2874a1f46877c148af850a7fa12058abbda35c0ba58afae177ce1ff2fff. 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/GBSMU8715806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94a8e6abc701e3b6b6b71fe7c71bc1ef77cf2bd674712078a11d4911d30eef8. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GBSMU8715807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bf2a01a4cdd8b2846bbd72d4a8ecf8132d10f18c68bca05e77449586087881. 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/GBSMU9829737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd01d536a61a523867eb5c901bc0180b8831fec8f0c5045b9cde2bf62a9aecbd. 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/GBSMU9829738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a74594c5cc062716044fc3d689483702e11f94a0cbadd6a15d512a4c93a5d63. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:38:22Z), 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/GBSMU9829739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2d9cd4dc2e6d2110c14b739e771dc834994ae834ca942d8cc9462f6dd9e10b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBSMU9829740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67073acc49efd5863d70789fe6da42a4eaa7a2660fcfc63a3b54338f723512fd. 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/GBSMU9829742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa86ecd056e6ffcf48e765431d848dafcb6646da8a2a22600d45f7e07a01b384. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBSMU9829743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a9ba2d15ba087bf3259f7341e926923951b3b3660423561abdfa27c94f806. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBSMU9829744.