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 0x9afdf40c9bbb4daf0328ba1f7d49ad9f96ffcec8e1275919d09540e47dc3cb5d. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bce7d256-bb5f-414a-895d-155808dde6cb.json and https://artists.proofprofile.net/proofs/artist/bce7d256-bb5f-414a-895d-155808dde6cb.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 0xaf701819baf67d3c000b240af9ee2aece59d66a3c280ace5e8ad5f801658c730. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEMG71300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf89da93bb9bc8273cd5f1cf2999acea5e2e78e9acd06da127975042810dead7. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:49:13Z), 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/DEMG71300168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3ecb35c9676d5563aa57d24cd5ef39c7fefd14f86f9d357dcd321c3a5cc3e3. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:04:06Z), 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/DEMG71300169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c38ce0f46645284572712a729f1fe8cac42e2f9f900c9bfa45ba82b1017791. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEMG71300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a7774142fe208247829538c55caef0c0e9d828165b4ee3cc1a2890a43bf1e2. 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/DEMG71300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3a684218898cbc78a49555062a78741a78d4eca2b9958312b514d758b9030a. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/DEMG71600184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe906687544cdf7488583f0ef6cfc7682908ff763dba5ca44a8d18e810c4f6fe9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEMG71600185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6bde18683730785674f2c641a94a47748f696027becc75844ad790edda04f0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/DEMG71600186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d3a8a2ac8016478e3b4df6cf0805e5ff03a1cc939302b52b7d5ab57cc7233a. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEMG71600188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6306271a8d5d33368af4d76bf778ff9e2ebbfc9cbd96eebd0ff411073e8eb109. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEMG71600192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd829203443185c717bbd9bdc143541ae611acf880d2745d2cfb3fb4fc93b13. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/DEMG72000263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f24b15a4d993b5fb2013c63c0c0aa1ac123d24e1479b7b3cd78d513558ff1ee. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEMG72000264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc129535968c928e6c58b550d25fa6ad31e47173284d1435746e9f48c09325cc8. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:23Z), 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/DEMG72000265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6809ef9fd232512376ad391dfe2adc9349e520a3a4424653dacf52046c7b3e11. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEMG72000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e5c0a21c1277f9d486d5d606b4906150e105c31f4a4ab1ec86e76f5db81270. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/DEMG72000268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee9d6a09f924cefa7fc43250913a13d92a1a5fa924f3a8bb696a7061f3a3d19. 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/DEMG72000269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0603496bf2d2ab0c98f2e401ba0900c3ca1ee11bede9deebde74ddf637eebd44. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DEMG72000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0419c4b373af2cc1cb00066301cf6fcf5748405836c4e65d1f6cbd7d1bc8c9fa. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEMG72000271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9804c612c1f0ad7225fca9f99e39c78899f684a3245df168ab18b3fee0901933. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEMG72000272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402547d8425d3a768868b8ee6f57ac69b07b20a5917b57f678343ee1bf49fcb9. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:05:04Z), 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/DEMG72000273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162bbbb0f31fb16eb9519919f016eda10679d6b0607ad7ea10b617596b2600ad. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:48Z), 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/DEMG72000274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dc0bfdb28db4a53d63c9a5ccf60bad4763efd7c915d68a1f704e42ab1241b6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:46Z), 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/DEMG72000275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8b3e2ddd4e7dc5c8185a3dbe1c09f834f88ca077ac386ec7603e25d3aa7920. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:22Z), 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/DEMG72000276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3376f82ed40e93a6434be68010dc3548e34bbdebc4a55e16ae3982ae555520. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEMG72000277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7064cf8c10abcff7cd17661a0f2775dcc9839fbaafbddbd81eee9fa874d0b854. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEMG72000280.