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 0x9bc88ad91737fbefad49097b2c7f954b0329740c9c14b6aa3790862c4cc07e09. 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/1484aa39-76ba-4f81-80cd-7e8110a1da1f.json and https://artists.proofprofile.net/proofs/artist/1484aa39-76ba-4f81-80cd-7e8110a1da1f.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 0x161d9705b38b05a0c8d738b8b46b4f2a25224920e1cdfd0d47811146ea255c3f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEZZ42170355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4d1e8f864cd2a4354c1d3688119c11dc12629dfa3952c0ebb674206b71a7bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEXO32235322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f698a4a191232b45791c37847d5b135f62e6822f0d05a0f4c7cdfc4ff6a6495. 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/DEXO32235324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0342ff2e3de071a0b04e1e00304c65038607eda7f4e6f557b5d88958ced24d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEXO32235325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c2f963b1e6edcb6ae00d52ab9efac7031b46870f3397b388302e6fa7f0e96f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEXO32235329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf07ab91aca42e9872037d71705daf188a4cc06a7b6a87e9d988a47266d4e560. 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/DEXO32235332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ede7e44246d0824786313bd78e7a23b3cd6f395525b870113564871b1480e94. 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/DEXN92265915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfae682df9cd3d761e365397fd9a7823441df0b6c53bd12e5ce0b24bd6a24cd. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/DEXN92265917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cceb4219ca2e7b229b1f85d2ac81f376386dbf26965eb99389e2c1948a480e. 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/DEXN92265918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd411c15820e811928ef48764eb77774fd822813ea175d728aa75cc7bda6487cd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXN92265919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822aa96516c87bd4f7193387839860cf82081cab9dafa2ee492085a336935a42. 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/DEXN92265922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d72b8df2bdbb99ce2a5dd228b982addea9bbb6bf1e655f0defed8c589bddbd. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DEXN92265925.
Sh-Boom (Life Could Be a Dream) Alternate Take)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1eb765de02b7b54a1836737ed22c597aa4db0ce6f60f251b65cd5492322293. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-05T11:01:08Z), 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/DEXN92265929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753d64bf3ef0f7559e6a1e98012ee99a6809e36c6b22913b90f85a1069d61f5d. 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/USX9P0648300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4736acb1faa825a69da693f8b35aed889cad115da9b807036cbc8ac8c1a93e. 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/USX9P0648302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e1633c536430b13de6c7a9c8650e3616eab53447eee3b3ecfb30e5a8b368e8. 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/USX9P0648304.
At The BBC : The Complete Peel Sessions And More!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3700037e5ca275267dad9e5200188d611838d1f7881f3cabfac5b0b91d3d8a68. Chain 2 (Bitcoin): anchored in block 958752 (2026-07-19T16:00:28Z), 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/NLG620490817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22c7df3f536dabe1fb90297cd7c7400f83c682cfb224e7259aaf948b4b43fb8. 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/NLRD51411278.
Life Could Be a Dream: The Sh-Boom Sound of The Chords
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f006057290117a3f8be459373ce52adfe253abbf39a54b9e996359ba724be91. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/USAT22219507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df3629c944bb8fef48d6bd0234056314b0e17c99e0f11e6a83178f2d97f66f. 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/USAT20703265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f486767789d32b8215a49745d276b6ef8fbbf962af7549b4b758ebfe9c688. 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/USAT29901556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f486767789d32b8215a49745d276b6ef8fbbf962af7549b4b758ebfe9c688. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAT29901556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df3629c944bb8fef48d6bd0234056314b0e17c99e0f11e6a83178f2d97f66f. 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/USAT20703265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f486767789d32b8215a49745d276b6ef8fbbf962af7549b4b758ebfe9c688. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USAT29901556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f486767789d32b8215a49745d276b6ef8fbbf962af7549b4b758ebfe9c688. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT29901556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4f486767789d32b8215a49745d276b6ef8fbbf962af7549b4b758ebfe9c688. 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/USAT29901556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b89e9a86338251902959dd1df0950d634441422069396a776fae59ff87c087. 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/USBT21599632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc68ea4cdeccf66a42755f1715f318aff72c22cf865fcb17d54594c119916b. 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/DEU241084259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43c8864522cfcf708f547d15a94de7e07eb76cf4ed42e159a53c2451b91e4af. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEKB71616803.