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 0x80043882a96501c5be6a14650106a3c5f9b54158efb8853fc5545d927b1bfcef. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bb2c46b-2aa3-4009-b62d-95a61f391e9c.json and https://artists.proofprofile.net/proofs/artist/3bb2c46b-2aa3-4009-b62d-95a61f391e9c.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 0x83d8fc1a747d3ea25d4e748bed873c922c0c1fd2ca7b28d63e4d79c1956ec7ff. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:56:09Z), 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/GX3Q92123165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3b4b0e52e5cb4cf23ac5ba1e452d934897436e352a1ba73cc988996a0875e3. 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/GX3Q92123166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4c4b181fdadcc99e6e198cd3f6daa593638749c8302a0f40728d146bba70e1. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GX3Q92123172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f539e24de440a69bbd6685e128ed3ddec5e30b7f3dc429be053669621563538. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:04:01Z), 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/GX3Q92123175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f20d629aa80510eae08335974a8b567b65c8af79d583a3200371bffa1c7d59. 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/GX3Q92123179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca981a098cdc5e44ced951b74fca825ea4f2e060fdba7e3d8ea4f6dea46c8c9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:07:15Z), 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/GX3Q92123137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f869fd4d7346abdd86c6bb44a610846193c6a09805a20245d590b93aeac1639. 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/GX3Q92123146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e06dcea5605d36402b08700b81794ddfffa7ee164571ecc1b79d61618d1492. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GX3Q92132807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a3bf683028faec329b48d814ebf1c42d8917010743b4458fcd9112c3a0f3de. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX3Q92132810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d020fa5a30780aa5edf597d392e31b1c56566b83c66e24d1efc61ffd88f57f. 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/GX3Q92132816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ef8b929f7c3f05908af3b90a5e5e02973bb493dd6e0e1ce1adcabe796dcfda. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UKXN22060417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fd4a51731d78a4fe71c6e124d73aac73096212385ae578e361f93f367e3fbe. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/UKXN22060421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014ffea1fd2bd90e03358fa26236c42618b691ee58b847e007673c74f0990226. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKXN22060423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ef1915fd7893e89070a9e085d54b8b684f1ccf37acbbe6f58e61edce38b4e8. 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/UKXN22060424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1899aeffec517b4477794f05182b2e6dc7e4c3ffa0a99ab3e7e4273f6178c2. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/UKXN22060181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4189a0eb80994e81973e3da501875f8eb1a8c334d1f2ebbbcda916003ffd5411. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKXN22060182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b83b12f75b10de52095d4c55145201775c27b7533e4868514ea21b4a916ec96. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKXN22060187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4c748169647a5ea0d9cb22222a013141ef9789702740de85689ac966749c18. 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/UKXN22060192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091e9868e493db677ed434c3fd9ac98b6e0420f0787c2da6beaae1050c8b1257. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:05Z), 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/UKXN22060346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a40f00ac53603607951e53b4097ad1d87558d3eac430b6dd37abd7b3268d5d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:17:45Z), 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/UKXN22061326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4f9a78579d7c7d512a2daf396b282b5a1f6a3cc5970605b7b89ae770b6ad97. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:36:20Z), 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/UKXN22061328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8bcbea282946ec847706913975bd3681045c17c1ee0bea25c4ae5de037d50d. 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/UKXN22061330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2356c9fbfa75ff2d3266eaf05a2ed8965e644e79a9103d6da8fc8b4ccd83c35. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKXN22061332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5629d423ba71ac1ce40cb976be1f2b71eb285fad21b0687b825b112c79a3f3ab. 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/UKXN22061334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cb8812212896876d93defc3c4b539712036a44ba809184b088014e71f48565. 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/TCAFK2197707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751b70a8ee6ce340e6f30f3951e17c7aa1428b2028162636ab18f2e48a433a4d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:47:16Z), 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/UKXN22059724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f276817de908acebc3e1e1a2fa84f35775b094e353848cee642677a8081cecf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:29Z), 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/UKXN22059742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912942b7df66d0804bcedb7ec0ee8fa342cfe32ac6cac8a0f6831c4b0176d0d6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKXN22059756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40ad20df0e3381b54b9255b503747e0c0ee4f6f5f3ab6e27db69f5ebfb46d10. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAFK2197799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e49d45ee48a20e69bc1c214015e260623d91764c66dc3b31cf23e1aedbca065. 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/GX3Q92123256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054987f0fa555c7762475e302560f753f44e7d42a4a3d47f96a9674ebd3c92a1. 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/GX3Q92123259.