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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9603996008d398c472da7909838243c4e87c8f7acdfd0cf2bb0588355a9a33. 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/27431d27-8ca1-4910-9280-1a47a35a8d28.json and https://artists.proofprofile.net/proofs/artist/27431d27-8ca1-4910-9280-1a47a35a8d28.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eea2905cc3218604ffca6198f5388c2313e1a7692a43142e1688412abb03bd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBLV61809754.
Dance Little Sister (DJ Vartan & Techcrasher Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61ca06ed734aede923d9fbf8d118176174f07f66e0aff60123cb79c6970bde2. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BGAC12000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1629f4ef29eaa157e160d8deb9e29ba3707595137ccf00efd407b592f9bc7a58. 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/BGAC12000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084e66fea3afc9a9353d49c5591693089a36fa138a1973e92e23102ad48c6325. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/US83Z2011681.
Highway To Hell (DJ Vartan & Techcrasher Remix)
Party Time (Dj Vartan & Techcrasher Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429d0d319d5750f9f997384807d1a5e325f97c5f715d52a9aea860e068b6c70a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/BGA322100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011a1d7a28bff86bdabd364a31b99a61706fac347b45fa5852b7bb3b2505d169. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/BGA322100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc894c652f546a4b6795ca88463035dd7c6ad2ac8ad19ce7fa5fdf02f7127ed15. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/USLZJ2190617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc1acc0a86f81587b7eeb327bf632f1dc85e880d36983f9aef52a58aa3aef5f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBKQU2171221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e79bb3a697b3984c483d819469ac07b27a94f92416b1d459b66cc918fdf998. 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/GBLV62100750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429d0d319d5750f9f997384807d1a5e325f97c5f715d52a9aea860e068b6c70a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BGA322100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e14daef6f00dce35f8218311b34b41f03bd2d1c0c9152d93920cd55c6a0f649. 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/BGA321900204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011a1d7a28bff86bdabd364a31b99a61706fac347b45fa5852b7bb3b2505d169. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/BGA322100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83aca26c0ed5a4ffaeaf87aa0440466754bb526b908cc73604da37d89e82ecf2. 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/BGA322100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5bc367541df16c7732adcb771fcc8f35519f20726942a9383a396d26662297. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/BGA322100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4849c2995e68f2b3247a32d60412b85ae3b99cd0f144910c5b794010f9797bf9. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/BGA322100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5cb6ba8a5ae14bcbb4f26bdeb28670b11f4ae48fd2d5844fd016a3b8feb970. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BGA322100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e78fb675267d01587f008a9422127dadec55020260721d05973317f058646e. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BGA322100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf03b6e8c130e95e25e1421fa8ae29edc6e228a5303b3af4121e5d8f55fbd9f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/BGA322400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eea2905cc3218604ffca6198f5388c2313e1a7692a43142e1688412abb03bd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBLV61809754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a04623e277e9307ebc94109ca82340ab28642aec5c90a86ff4dd39a168ba054. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/GBKQU2011662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1730cc363e3d6376456012f15524e95140f8811d5ad05850f262c18dac721b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBLV62009297.
Party Time - Techcrasher, DJ Vartan Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fed50a10c0541401d6847fe9b1a7c4bd2df34d85da07210b567ab9feafd9076. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBKQU2131977.
Highway To Hell - Techcrasher, DJ Vartan Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc19a878355d2436e6247c18301922f407e56b741572ae7db78fb53d8a22532. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2103932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dd3b87735ef5bc728535e8121198d92739d00f0af54b6cb6ad761abfe008dd. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GBKQU2108406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e96069c9dba6c940e5e85daf2d32f7c746a87cd8eb613d4f573fe40a144ea23. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBKQU1966623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad86b237b60b94c8e1c8cafc9dc6564e8571d3a5c38231b413536e96c61c06e. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBKQU2040536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f1c3d7276b3a135b9dbf3033b0c1a497989481db1f30dec2537b142f3d4982. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBKQU2018791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a619d13f0b0d279a23a02b43d5bd3beaa2de0730fcd832728e0bd0845311c3. 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/GBKQU1920318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67686d30b03d3cb095c42a9ef0b7002a7277766d3c2ad8e0d97c4209c3edf4f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/BGA322500003.