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 0x9bf13e258262f43bc1a36a727aec50f374c69e26cc8e523cd2f7e24cf8105da1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51bb9f50-74b0-43e6-864e-2abc3194e465.json and https://artists.proofprofile.net/proofs/artist/51bb9f50-74b0-43e6-864e-2abc3194e465.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 0x9696f9f68206bd92cd7531c5c308ffb45855698c066e595c6147e63f9d9fd6f0. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:29:19Z), 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/QT5M42577261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6b17611bd4a694182d7ee89ea760382eaf454799def344aad2b43aa028e72a. 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/QT5M52545565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b81f0d6e41802a92c5f2173f107ea7a75eabe89ed5e89efca18adfb61be564. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QT5M52557595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcf0dc3a5696b901706202bfb6fc4d2a9bae5b163d5ed38dd414a377f7b8ec9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT5M52550861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e03d22daaabf814047bcf80061291a1a43ca993c4bcb2a937b54dec4e674de. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QT5M52576074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3540bb7fb3baee95a5016ffbf0be20033bfa1e0bf17db0691eda91ce3544004. 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/QT5M52524703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45e98cda82f5c6af8cb466c1ce1fb163ae7b9f933ae34d558f96bc700c143db. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QT5M52537305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd001db253702207da235b61b06e6988273da007931c3b035b8a462932954df6b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:01Z), 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/QT5M52510858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814e80deda6232f18f5f2ee259f5acda970369abe9d2834e771c87b01448f63d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:50:33Z), 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/QT5M52570858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82db1aa04dec4f67c7a780c41dcd97f10c178fbcce84d246235f242a1099061. 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/QT5M52512774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2789a671980e7bcdc56ae1b98acd6f454d0ca43e3512c4eafc8a37a19c547356. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QT5M52512077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfd0132ecd9f0fa5d87a4b13fd4a0a92727da81f898c94ad0bb2e6dd1df7168. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:42:15Z), 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/QT5M52588224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4a17c5f52ef0fea23b57128d7f8a35fb69b209f0a7c581a523ac1923815f2b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:35:01Z), 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/QT5M52525883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098fb9ebfded07241e797ff039510fc9ae6b5a66782c82b9071b562052b1bd61. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:43Z), 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/QT5M52546242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9a7dad5ccf1ede04161d9d7d86ccd78419a3cece5b7292a3933fd6c887073d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QT5M52533454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a1453c083ea05e67bb9db20e31b520c51fd9dccf2d73b4b30e9d77a2448170. 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/QT5M52554077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6233307c4102b7b91fa5d6b13ed92a78da65d1ffcfd16eb3640611ffd309861d. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:24:14Z), 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/QT5M52526450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8697f30c0b5d4218fe0549740cb601c81f1ec42632b0abb804804a9fa1884eb4. 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/QT5M62549982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea953c7372022ff9454939cc18afed00080607e8a70b6508597c67335dde0cc. 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/QT5M62597195.