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 0x982a4810ced6fd67522f4069b208b6423e25e350dfffb366c78dfd6eded1cf00. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f66f0172-6fa5-464c-a944-f45cfd8d773f.json and https://artists.proofprofile.net/proofs/artist/f66f0172-6fa5-464c-a944-f45cfd8d773f.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 0xef0a76c045366ccd233e2b9ab83b305235ede12a6c65b9f23df7231845952bac. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEPI82431713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca53dc4976423b87f4b944f9a1ce1c67cfbf7d8721ea87cc83235f3afbb72056. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:59:30Z), 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/DEPI82431831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2d344cf78b1fa05f23e5e7f32c8c362f629c59c43ea3116e450cb5c01fbfbb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:35:33Z), 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/DEPI82431871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c77318693dd6d66c35a352c1e94e00c8aaf87bbf55f927cb4c6204c930ef05. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:27Z), 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/DEPI82432004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156310bba320f93d9caf0b0afc1779905405670aa64228467d4573e123c43327. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:01:15Z), 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/DEPI82432309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e098d1443a0609aab152241356720b7663f3c8186c9aafe1520c1a47bf77ac. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEPI82432522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c7218b7cedce268e8002a8eef193caf192fb157fc3ba3fc16cb0245de91864. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEPI82432829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa74888f80b0e0b64236cbbfea5abb2852668480439110acf0897ffa47b0f8a. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DEPI82433056.
It's Beginning to Look a Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94455a32b88a928418c77d296f88bec4ba5232a0094e87040f1df564040b94e. 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/DEPI82433253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564ee5b51e16046ed1b85ee7c1a88b320d199a58ec4a8ba9cdeb62d829420394. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:08Z), 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/DEPI82433344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd642cf4b3ee03ab274cb8f498f98e3ded18434d3f0b14137df9c28c6d2ac27ef. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEPI82433346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe42a18871a5f32e599ce885184bf8f5803698d2b6392bbb818551536e4bffc6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:30:44Z), 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/DEPI82433345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ee21cb82153d1569b7dd2b826cf38568e6a5ff8bd665cdb8f993571db9898a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/DEPI82433348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14345f816d8bc5480595127e19553e50ca99d33411487bcb85b7c379dc734f6b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:53:36Z), 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/DEPI82433351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a7233c5b71df00e48bec58e95c1274c37f8b15518240de45583ee9fc221225. 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/DEPI82433518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce27c71fe2e266f81e1be3c745f0aec2d9af8f69af8a1e1f6b99e792939ea518. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEPI82433517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92694e416c432a09c6336f6e32b13c42d23787f3b1545658a7286022226b6a26. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:07:16Z), 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/DEPI82433215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c1438005b26b979f6eb4eeeab7c6c71d4690d5e27b68648ea5c9d52b11059a. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/DEPI82433214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca28a15ac9634cd9fa58b618d5d49861d86d7ca0429811b6335d2b05225c32f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:05:00Z), 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/DEPI82434692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7b2f5440355d0202172cb5f1dbd320bd1fbdbfc82d1d9e00f8e3783b43eaea. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/DEPI82434686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c01d233bb9d55a1db626bf9526d339a632f2d1f614396448a993fa7b4648cc0. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:08:15Z), 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/DEPI82434696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3760530f7db0e97eed604bf75f57be904000317ce5aeebd45c3aaf0d9510779. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEPI82434694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017d91c8a217890b9e4bb11973cc27ffd3b30e8b84bf08438218bd80a8bdde29. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:35:22Z), 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/DEPI82434698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8aade99f55b8ea461a8464dc40a8b6b83a10073c8995521ad9de7b8d06b0c4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:50:48Z), 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/DEPI82434998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa2c384f9fb4ee202f8f33467185e7edb83e27bec689bc67fb71b084592ac09. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEPI82434996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e548ba3ba9ca9f47a43c1ff16645ddd5c96dd093a3356172555611943a770c4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:40Z), 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/DEPI82435000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cd89b466ad104771a099b691268d52c9eb092661a183bffebe5456211da845. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEPI82435001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a8b30ab60b9d02c0533fe1e2b1f7f4f5668c00bb12fb026659e7b0bf45a5d7. 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/DEPI82434997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2071d8e177a237ebb4f88cfe299984064e98b192c8f3cdbbd36f4904c3d3f21c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:39Z), 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/DEPI82434999.