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 0xf952715bd4f39b1614ae970efe130478a7315740d7d2e1ebd233fe7e40cd7165. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1819f140-ef7b-40f7-a003-6d9dfa025e67.json and https://artists.proofprofile.net/proofs/artist/1819f140-ef7b-40f7-a003-6d9dfa025e67.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 0xc7d3cc5c750971d71e7f0d13d71fc1816406769e229eb6d11a256016772579ad. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB7EJ1301033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd067849c839e346821233d5e3e77b7fe1284c96a1d0269ea9eb329a6181445. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB7EJ1301047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43a75a0aa67f8adfe938aaeae17f6b2c220dc9e8c8ec35b2aaca6ad644dda9e. 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/GB7EJ1301054.
Just an Illusion - John Morales M + M Main Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c95509572b7b504d05e9674a805ae558503e9747e0b2980c4dc8afa9ebbb29f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB3UD0900434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08485cdc1065ffef3025f6777d3f258fa757bb7802ec392ac8eaf7a048b4c0cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB3UD0900435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe719639d6c7ad1615aaf5bc0c1c2bbb96d0ab857235e5dc586624266599a429d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GB3UD0900436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d620edfc2d8c8ad79102f60cfb53aeab2c85cbe147461d0128c5206eacea03. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GB3UD0900444.
Body Talk - Errol Kennedy & Yam Who? Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c19b08cd3608ef784d0d573cde6050eb98169ba1c0562cd9785dee3432ce34. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GB3UD0900445.
So Good, so Right - B G Baarregaard Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33a989a82c554c4f156687cb4543c930fdf47a9e98f3929cf136c3b5ad57981. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GB3UD0900437.
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 0x5bd66df08212482686ae8fd8855ce66d27be037769c8b78b93979fa044320281. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB7EJ1401308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32e7293269ae81ca38d6988b540636efb8df15313c583939a324230f2f6bf7c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB7EJ1401310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa48424fa774d6f76879d22abb2cc978d6dfa1ed27aee1640cbf305596a2560. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GB7EJ1401312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ca47af520ccd1f96d43b6f99c55f673d9fbe16de638d093145461725bf5fca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB7EJ1401314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d8a399bedd88336de97969097f961596019f5b722759f086572ebcb1c52b65. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB7EJ1401325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cca99e462ec4043cd80bc466d22c83485b60b3c48b8e0ae143840e19d5125c3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB7EJ1401326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ce2ff584714d9bd9162d1b1e1abb2e4b41f4e4032c761cf0f6b906250b1808. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GB7EJ1401327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93385be67208ff96856d64c0bd1b575beff8fceb5c6c89b3efb8b0e0e969cf16. 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/GB7EJ1401333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ed3c68704354cefc639f1a49346e589104bc707e5eb1200c096018f8801bf1. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GB7EJ1401305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a1cd8e414d5e8fb1f18c12ebfc56ef60fa5b0b8f9ce43f7ee00c83f31342f8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES8741508105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fc7cc5f5296a76cc8c91faf67d1060df0fd80e05f9fa4ca35eaf90d3f41231. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES8741508107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b9f3801ee7af897ee5776aad9fa5379f2549808c66888b7273cc063a153fc7. 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/ES8741508109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7db11bdd1a9bdfc266aafa99c1008e8e64401b73f1ba3ce791d947d95a21cb. 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/ES8741508113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af2bfc088be8f2fd7a34c7e6412ba86720c2f24fbb97e60794c955e584e4d2d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ES8741508112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146f3b8b5a124476d7787d4de18167b85bce5ce431e9196ffeba3fd6d5245a78. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NOMEA1604010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb139d22b2237285f435b036cab6bdedccf276758d3f57899747a986fd005d44. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NOMEA1604020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a053b7c337c45971dfb592e45d2cc39278c3249468d79dd80bdf658c7d4e34e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOMEA1604100.
5 Years On Disco Volante: Summer Anthology (2009-2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c05d3c6c2c3595bec36246ae6c24ff20f0cecf1ce01c67432f803fc78e6415c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBEYE2500002.