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 0x44622874757c784e5ca6f8a334cec2b1d2fab4110d2bb2089717b2d5a3c011ca. 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/3fea01d5-9429-4306-be61-ac3c323adfd7.json and https://artists.proofprofile.net/proofs/artist/3fea01d5-9429-4306-be61-ac3c323adfd7.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 0xb02fd077608517ed0521d41bbb1a4669b8feed10b0716e31e65fd648cf064e37. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBKPL2205357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bc0fa4e6ae88bc480adcb2985f5ac35fdc240018b105c9393eb8dd6f22670d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZVEM2334828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd70aa8a1a87a40b9772e182e5fe10cb3617839e438e24b48b979790da2f9a2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBKPL2208196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f114d02cb4bf1cc4f9c21121b5fdaa25395589bb1deded5d47d50df5e792fe9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZVEM2334829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9e9718dda0345a738a6ab077a83ea1d076f22675e214a3308edb768c0258a1. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBKPL2212942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c797d91143b988e3805a2b5967345c9b05da0386e1646fd16573c9dfbb6a794. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/UK6KW2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012490a1403a960acccdbc8ada445a93c63eea7353154592cfa268aecebba683. 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/UK6KW2300087.
The One That You Call (Acoustic Guitar Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b20df9846fd0c9af01ee5fdac7079cb6c65176b4b1aa6c3ce6e06dc25b55d68. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UK6KW2300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10be0431c25e49f8539e196374c769098ccca6e4c03ad399120a4efbb1c8bd39. 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/UK6KW2300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012490a1403a960acccdbc8ada445a93c63eea7353154592cfa268aecebba683. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UK6KW2300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10be0431c25e49f8539e196374c769098ccca6e4c03ad399120a4efbb1c8bd39. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UK6KW2300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070a40470e37c846bc51a8aa47caf07bc51efb47ebb3a266a77d36f682f72307. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UK6KW2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c797d91143b988e3805a2b5967345c9b05da0386e1646fd16573c9dfbb6a794. 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/UK6KW2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b53937b152cea76a3116b7ace1b3ac8a72cddd74643b4586ee6a1f7da107bcb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UK6KW2300310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b20df9846fd0c9af01ee5fdac7079cb6c65176b4b1aa6c3ce6e06dc25b55d68. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/UK6KW2300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d298446f2833fe3413ceb3b365a2868a63a549dbcf60a8ab4ad2a43da8f623. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/UK6KW2300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9711cb1ca25854dd3b5ca431fb71f231fe22c075ade34bddd5a00ddfff75009. 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/UK6KW2300282.
The One That You Call - Acoustic Guitar Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8625efb68595bde9b307d5736fb0010ad0f12dc87af1f880ff391f62b898c58d. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/UK6KW2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a487b7257599d08bf30f4f3a1afb95fb0b54a1583065c3485a0007a0937f9e. 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/UK6KW2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6cb582a62427b7c8530ac0bf5a247dbcaac1816de8fd3149c0bcd5066d223a. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/UK6KW2300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb233ab083286bb2a4e8f90b3084bfe9b095bacb4ff2f205ed3df81a16a9f3bc. 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/UK6KW2300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c797d91143b988e3805a2b5967345c9b05da0386e1646fd16573c9dfbb6a794. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UK6KW2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a487b7257599d08bf30f4f3a1afb95fb0b54a1583065c3485a0007a0937f9e. 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/UK6KW2300082.
Every Last Detail (Acoustic Guitar Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2439ae28306f26a447e4e97cfc0a6e62514a9f8a631aa7713d5cb610eeb4ec19. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/UK6KW2300347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2c5eda72cc1a53bc2de10c5f810d7af812185417bbde8f6e77a796621314f8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/UK6KW2300367.
Don't Quit Trying (Acoustic Guitar Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75de103b73c6b94b92fba90c1df7daf8c14a958349b2ab291effc94a05b08a1. 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/UK6KW2400023.
Life, Love & Upsets (Alternate Versions)
Every Last Detail - Acoustic Guitar Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7b6d9050106ff84062bf2de3562ad4f0cda3dd7c93b6c5fc13b88e4194c9e2. 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/UK6KW2300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba40297ac57086ef53dfed0d97726ca4dd9482d1e8b7885ecfe36048d950441e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/UK6KW2400004.
Don't Quit Trying - Acoustic Guitar Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acd70c460b30dcb3c9262a4b1d65687fbfbfa1f2b240753cad46b97b31948c8. 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/UK6KW2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69382f8e2724767ed5d7832ebef9fa7eb780d174626a4d3133db684ab5fd0f3d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB1102500295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7e201c239fe874bbdcb842dd6387e7e0c136d19fafd0c15484fd0ada41810e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBARL2401960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc919f4a064b951decd3789df37844a437c4965f2004f7802ddfac8bfdb0d41d2. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/GB1102501338.
Cats & Dogs (Acoustic Version - Live Session)