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 0x60767c383bf57354411d4e88b0be12f8007638e52bbcb0639af2ef0943097f5c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4603b88-f70c-4027-930a-4d392684f07e.json and https://artists.proofprofile.net/proofs/artist/d4603b88-f70c-4027-930a-4d392684f07e.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 0x969a4b3ba0c488113ce5fc98be14b8eb21b123e2aa44e8dda554ecd57a489aec. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:49:44Z), 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/QZFYZ2166439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e7dfaa19c7cb1eb5ce32d4b4d034df4d621fc576a44e93a5c3e4264d76d532. 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/QZFZ62180514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d86e4b98c258f560f1468792c99f9bb3f70d9f79323ff256b172542901dd6f8. 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/QZDA82107578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2876d8dd6cdcac98310840e6efeda087d0858dbfd30d6cb6ffb0a10c6f1971. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:07:18Z), 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/QZDA82199554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969a4b3ba0c488113ce5fc98be14b8eb21b123e2aa44e8dda554ecd57a489aec. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZFYZ2166439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d7832ddd40c7be7860fd2496ce227cd4727ca4467547da4e95c33a16cb16f0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWY2198684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb601dbbf2d12742f5bf3eb9939c113758e4528ace7cb45e603bf3a7a1913f75. 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/QZNWY2198685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2876d8dd6cdcac98310840e6efeda087d0858dbfd30d6cb6ffb0a10c6f1971. 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/QZDA82199554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e7dfaa19c7cb1eb5ce32d4b4d034df4d621fc576a44e93a5c3e4264d76d532. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZFZ62180514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c20d42adafbe9b82d820eb082eeb2b2e7eb63dd92be192e1885e1bbd3a7b48. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYZ2341087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da343150ff7b4ad8989b6324c8907db8821f92c1b53dffef595650509f8f160. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZFZ42369613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b012a8267cae59ea0021d40a6837edf06ea263289f109eaef16732da8b65d31. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZK6L2388491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7dd0ac409cc7b63d731fae90f47662cca41c04e9fec2df22f377a3c7022dae. 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/QZK6L2388492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e17f0098aab075d3e193d74d8747484c16cccff6c1e254a3b630b224ade9e3d. 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/QZK6L2388493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb86b5f5d7528f0a088a486514e09bd470a9c077511e9ad20fe14cc0f29522d. 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/QZK6L2388494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698734eba6bb5da472eee6def6e234d853ac24e8e4e31aa1c8b55d9129477b73. 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/QZK6L2388495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4dee8bdbb42ca10229fb59190934ce0f161dd06e3559ea69867fa013698b8b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWV2327360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f18691b3ffad97e002cf12547dc221c48c8b43856b9399d7f8448bd9767d922. 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/QZNWV2327361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620e138d4b25ce6723bd3d43f2cfcc6b4b643d9ff38a03532940499d4a97ea64. 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/QZTBF2320830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba10209317ea58639d1c7e2859cf03ad293982ed97d8f02e81c0a7aee9d7160. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZTBF2321534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5b20218f5f009097793dc38c1ce36512b6565318c5c83e4f8a1fc8d683ab47. 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/QZFZ32499110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b3b83fa4ed2c21761698f14a80510a4531f7d363780d3abe245ccae47072f8. 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/QZFZ32499111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b3b83fa4ed2c21761698f14a80510a4531f7d363780d3abe245ccae47072f8. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZFZ32499111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6972ce091c662249a6524d4fb192e3d5c89496026ef6decbdc34ac7e686159. 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/QZFZ42477157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e84077ed3b5521efc2832e461c11d406588878173dfa4779c7cbeff2ace0afd. 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/QZTAY2456019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5b20218f5f009097793dc38c1ce36512b6565318c5c83e4f8a1fc8d683ab47. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZFZ32499110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620e138d4b25ce6723bd3d43f2cfcc6b4b643d9ff38a03532940499d4a97ea64. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTBF2320830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4dee8bdbb42ca10229fb59190934ce0f161dd06e3559ea69867fa013698b8b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWV2327360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b3b83fa4ed2c21761698f14a80510a4531f7d363780d3abe245ccae47072f8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFZ32499111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d33f62707ff18e3d17acfeee9b7c73292a77dcb4227ab8e1e16669fe1269de8. 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/QZTAY2456020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8bdc1caf1e82a8dcec3e58b53bfa4dbc91f4f685edeb89cc74a520cd7f367d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZTAY2456021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3321caf109ca2f1ed57a5e859f17c8f73915cd3fe91191417b122bdc44aec4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTAY2456022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2709f265cd6cf65fb62fde438ec51061af3ac261691dddd14a801082155db4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT3F22466259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd082e96a4c54ebdbffdc602fbf2921e61dccf79f1e739d46f60dd8b6296ae8f3. 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/QZDA52591630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ab8eb9547b229de18f613747c0fd6bfc81b58dce5848f11bf865242b5d2532. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZDA52591631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b47a77df7281a33d6ca0cb446ce5208067ab8e66faf6f90ea1ad2cdfbe257d9. 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/QZDA52591632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e3c50ec85d6a008f6d4c9abbe3bf9bd281229de3a24585439eb629a60bc919. 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/QZDA52591633.