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 0x7b2e851541f44f0e96caecc405ec7e2361ac3e71b6bae50769f7e147ba9a4321. 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/426b176e-cfec-4a79-909a-0b312b6f0a81.json and https://artists.proofprofile.net/proofs/artist/426b176e-cfec-4a79-909a-0b312b6f0a81.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 0xcc876cf695b9305a39913c2c7af23dfe340589a69aea9b6978267fd13a5a5737. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWDD2593744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028be0834a2391deb9a9300ab7f71e7d476c321e70fb010bac56524e28cfc554. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWDD2557055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1c16692f939555efcf58b939c3d208836546e01f56f7f07fe25aebc31376f6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWDD2565269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c285afd2188f3be21286a2ca0aac35aa88225845ae3190a2847253cb318dcb9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:20:27Z), 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/QZWDD2565404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea777a548168ff2ed7d8a1cbe8f0cedfa0c4b2e45d42c874f102b8407330fe9e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:33:51Z), 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/QZWDD2565405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c4243e4efef70e9e521fb18d7d30ef5137c6d81fccee1f79cc230cf06786dd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWDD2565413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55d4cca7b8ab0fdfc415e07dbb52b63391581e1c12b25d4dafcdc6c001159fc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:20Z), 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/QZWDD2581495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26ba032ed37776331e4020302225a1cee9e7213ca32e46f5a1dbcdac6078ccd. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:29Z), 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/QZWDD2581498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b5c948136385032eb707982d81787eb718ff6cb3919aca9e594aeafa61bd13. 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/QZWDD2581501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8423dddfc653fc629231cc590528a8eccea6bfdf97cc1f81177550824da40718. 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/QZWDD2581502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2650300affb90d80909a51d80e1db3fe5a011447ca523d036e06cdaa48c56b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:19Z), 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/QZWDD2581504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001b60910282b64abd14e206e51cbb86b7ac52a98c55b11c123ef43819fad780. 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/QZWDD2581508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0da4656fb9baf6c2f234d9e56b32e79c300abc72c53d5c134df23300f713357. 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/QZWDD2581510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4352b9de3e981bc7b2b017681d603627035cceb3b78106896503cb194d02e1b. 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/QZWDD2581515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce75319cb0ee0a1d49d81279b59a9fde2ee5ca4a7a85a5a17d501f14a270436f. 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/QZWDD2581517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea359b094d73622e197a2e5635667787033cb4e938d52aa00c49df42ca599a2. 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/QZWDD2581520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d816e3f3094d2ae7802d3bf5a232a1105f48b5f2d549b719c7ad8a8595fd41f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:55:25Z), 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/QZWDD2585718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b278869902ad3d24bbcb969eca8d0a8afee70a17397e04b963e19619d76a6f6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:58:37Z), 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/QZWDD2585723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfead4f8de4b7aa8a5b35819656955d18f5900190feb178f723e23ebd6d834e. 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/QZWDD2585726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92731c4e0d4c8809dff0d4095c5b3911c7ff8940b43222f384e85faaff458afa. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:36:04Z), 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/QZWDD2585730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1133fc64f05e25ea8cdf364d319fdb3878560b4cf7fc85fb6eef649ae7471d38. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWDD2585738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe307ee137aa091e8734f7c5c8710c36cf05616ba806c75ae9e026b521aeff58. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZWDD2585740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae362ccdd0c17a988da26ed5253c0951f98c6516a31a3686591e075e65f53e4. 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/QZWDD2585743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03bb8ea04986013d2a17676c631721dbc3e9bd3ff2acde86fa8dbf50f53d1c1. 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/QZWDE2584048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981a825c41e7672c9ceeeb593e27573f8f3612aa8e479a60a7812f3b523b7616. 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/QZWDE2584035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa136f9bda8324a4c349c187c1b2dc5a44f4ffb9d7e3a025c4118eabbd081618b. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:49:47Z), 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/QZWDE2584041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874f1beec235735b042fe85686e43052711ba3cf5df36714fadba5fce38aec08. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZWDE2597731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db63c4181f188037f2f40db9f129528ccb3b8460d12aa8cb3bbd718a4c041c2. 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/QZWV32535542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7f92eea1d8c264c91e0554c625580f288e4a4f297f57e8e963b5de5b39c4df. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:32:15Z), 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/QZWV32542248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d572fc79de20719b5a09bf1a6c5283519b0c6bb3c04f9f1baee2f94ebf5c98. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZWV32557664.