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 0xa5b328bedc0dd04f92d83da98f9842f8c331e386b92b1764c59fa33e72c5b609. 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/55d6fbbf-1efe-419b-823c-aabd33128037.json and https://artists.proofprofile.net/proofs/artist/55d6fbbf-1efe-419b-823c-aabd33128037.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 0xed30b95753f6ae0397ba7336371ffe4cd7e086efe3613e0855bbeef791d69b21. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEZC62251922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd178324e98877c31d7e1a95d285fa24bad3edd577e9aaf52d41c7ff62506295b. 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/TCAIA2491667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51134e176ba846efb5f4b0030b997bd6b117277579796927ccc9c634f3c9dc87. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAII2464203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49275377a725ed13dbf56bce1a99479706fb694c0bb69abff83e654d0047d885. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/TCAII2489108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d611a91a6d447c9164c412a22d61075371959d546048254dc87b5cab2ccd766. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAIT2490013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae09184375653ca559763d3d78f6279c866490ee5158891d6733be597ebfe18. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIX2405131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cb712a26da93cc479b7d680e7db93f7ebe54d74bef320db539f32b8652a191. 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/TCAIY2445909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b28a38713cf34f8b25a6d352dbeddd65f081d33670f8ac3c5e8994167e929ca. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCAJA2441114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee493214f240d6323acd11b62fecdf852711da2675cdb748e41f905fac406aa5. 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/TCAJB2468115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7200b22032d5d150e25ad17a0bf54af0706e3ae3de3affdd31b32b832e74e4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:16Z), 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/TCAJE2439987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55417a3cda646bd6659fff09bb853dbff9ac640198c8d34642b0e8f01de86634. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/TCAJF2528146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c994696a890a10b05f1ef271732531ab4e11e9845579b2f6ca2d80a6c17efa. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJF2584487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e1a025e6c4c1e3c9b46076abcf2c707750398eab8df15454a1183399632e06. 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/TCAJH2599111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaa30e7cd65c065889fca4249ba1e657f5eda05f57451effc9738267d5f991b. 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/TCAJI2566624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8c582d88ffa4daa7a2e71beaf54739a7cf64ff942158d17a632d4a442191a5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJK2516545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf276089c314bbb593ba9cd126a12200cfdaac02a5dc8250a694b6469bb0fd3b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJL2530782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7761c1382f4845b0b31763c914edf5f080bfea11d33f6313331932e4b4c50f9a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJM2578693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc60d4b7dc162abea85aa640d34bb978a856e416dae6489682cf121ce9aed2d. 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/TCAJN2585286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829ee5837608c8af021e16e284e5a19ae5c589558171f2a7384e8217b9f0ded6. 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/TCAJP2526596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5679df08f45de65a8f25f432fdc7f0012cfa7bb60ceb7ca27614d358d3fa7a8c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJR2568830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef17ec5a440cc36917d045a126e2626d5ca059c2403f2abaec11a6a070a1ab40. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:24Z), 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/TCAJU2507558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36357db59751cd87046d92d3c5c40ee57dc56cc80d2c44e212d176d58a780ef9. 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/TCAJW2574311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b0f5b4fd3208a71e64047c86c80534576b45f9e54613982b6f8cd54f33765c. 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/TCAJZ2589878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aa4416aa6bc4eb99e69cb474abc1c460915f0fc0e38c5ca24b4fff04397ea6. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:01:23Z), 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/QT65W2561864.