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 0x7ee93d05d53ad6591db535b446e9e4f893cb75099e980344c1090979b745ce4e. 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/172ecd00-525d-4e78-9667-3132ed27cc0c.json and https://artists.proofprofile.net/proofs/artist/172ecd00-525d-4e78-9667-3132ed27cc0c.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 0xa2ff94df21d5a1e1d4e9aeda0948033b10bb130e822805ae20e99bcc23faf01b. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QM42K2011282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc35a7ce95b1f109677bccf4c6acbab2d3c6d771522c610a7a367bf4addfe585. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:07Z), 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/QM42K2054944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c942f1cfa0d56a991d566b65a3f61c93a954d5cf3a46e387112fdb0dbfc5d7. 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/QM42K2014980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a46a93188fa79c488ee5712c6323582fb2493225946d613f77b8af95f7b0d3e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:40Z), 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/QM42K2059961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa11ced115bd9e9bd4342c37730aac0eb30507c22e9880b734e404da5c6e2af. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:03:43Z), 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/QM42K2082732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf375c38116b9deaf43e31445ab72aff41d23eb7a208ac13c45e081f139a364b4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM42K2002978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb587a7a587b522f6ec6936266c3f3543c7f1ff6824940e0314608bd5301ef59c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:07Z), 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/QM42K2079301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988958191b43e0a95eadb3821b0ec647e2cf5f9b0fd93816a50ae9de3cf14143. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QM42K2024257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa261a04d284dc9d70ce8c236cf3c8350888ee65ac989b4b8cb002795e908fc37. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QM42K2073773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f0cd0947f2c6e0386175f0c542bb7e1b2ab82150d694e012be1242ce6c8723. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM42K2058181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaecc615ea14565981deea2927429adf35ad348a3cfdaf2812d05a18a47a8dc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:39:34Z), 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/QM42K2054389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263d0bf617a0267c3cb52a477b2f44e2399151e696975b82077bf3a9cbb41eb0. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QM42K2008006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aae89c378474bd2011c1d5901b26beb3df674f17749d857928a3912bd6eca63. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM42K2033216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2a489d96047b1ffaf6027a28b5155488bbda15d839f55893f5c5220b79416b. 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/QZKDK2055896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38799aac295bc5b39fd7708adbdaab82fa99225be19afa07636a3a0ba34ab28e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZKDK2082294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23cc2066cff953c36b7f73c78f93169a7115a760f33da7577c329e480bf6a46. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZMHN2018036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea8e646c388d263e115c187b5c4c07e60e446c383f8a2a220953ef274c1f265. 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/QZS662199588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd78c37ca29b4c938b60d93c4e63c3d54d7c50a2945b6f5bcf106dd30fb93a6d. 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/QZS672164192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b6ce693c23548355f7c82cdc37a7dc23a58859fabb32519bd696d7f172e6b7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUA1D2310388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4398fa89dc34bb401eae0e6ded0460d41f1153659a7a0eca54f128e47e741fb0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RUA1D2403064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb0c6e9ea507f2e264a5ef19b6580ffaf93ea0c2f22b72ffb296cb03a4ef4c0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUA1D2450928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ad8f9e887b8806154d6b261f98aded4038dbafcaf5eb8bd48453aba41144d7. 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/QZTPX2552838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03d0832b6f82c751f9da30f1392e368eb78bf28063aaa48034d6c9a84f8e41e. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTPX2552839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff122556852b951c6e28b5432b2b368c154103a7d5e502416abf07d1a9b15db. 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/QZTPX2552840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd610db1f4d34242f94228a066550e4acdabe08358655ebdc5c494f2c5518e1d. 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/QZTPX2552841.