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 0x254fe5b95fc13bb3bc16ba982262a7f24be5ccdf140b7d634d86a7eb8ec00415. 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/aa0ae1ad-6790-4be5-86fc-5aab315d041e.json and https://artists.proofprofile.net/proofs/artist/aa0ae1ad-6790-4be5-86fc-5aab315d041e.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 0x432d8459dd1cea2a3b7b7cedb120f7ddc875ec5a9f8284cf5b50ca292bc634c0. 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/USDY41582604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab867e26d84856de9ebb9940bc21b8fbe802147f19459ec418b1b902e3ca815. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USDY41582605.
My Love for You Is Like a Puppy Underfoot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb530799981272405ec748ca6160d345dbaccbd3ac6435c6608c30a501c49d3. 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/USDY41582610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff1690ee3170a01826f4b1e3f0e123fa1b998c09024e6998c158336f02a0074. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMCE71302020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586482a765bf06cbc262b662b3c27f56b72d2ec54809211ae6e26a9620c5338d. 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/QMCE71302021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebe3a46dd480cb54851c19ba46de6b7b34bb25dd27cd61f9c2fd680da093d77. 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/QMCE71302023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85599709cb3563bd32f620d72ec23945b41124e1fcb50fa9d6768809cd58e5b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QMCE71302025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff32376d4abe30395e5c80cbadf3e9401e0bc1a96eb20c34f907d7690ef01e6. 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/QMCE71302026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d84724c81cb256773b2aad68d41c0783dfd269429a75683cf4ecaaf9d2de5c2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QMCE71302028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b530c99b1eb6f5d1f2741836afcdaa959feb3880ea08ac85f71cfd676cad1d4. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QMCE71302029.
Wall of Tears & Other Songs I Didn't Write
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199fb4025d756511b581525b84d40aa54634e0637355e9464a73f5f24b4f1df5. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/FRX762100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3299d07bdc320a4cffcb11abd3a39af23b4313c593df665911e1264a90c56f98. 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/FRX762100096.
How Can You Live If You Can't Love How Can You If You Do
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc749735dfbd91ed88349da7852cfad045210e17f6e43217af98f8f3925d9283. 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/FRX762100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4a5b8f9d9d9ad0885630650b50f0439a54cea9f6f31c99a73862dfbc9e7fab. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/FRX762100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9377c174f1c7f51bdbf8c07a431297fa30a33fde89e78b8dfbfeeaf55b35a3b9. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/QMCE72428102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420e2b273f1b32b7c420529311b7119fde71c18b869e8ba9043f2c73643559b4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QMCE72428103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae455d39285e19bdb9fc79b23f2bc33f07210b881a78c7afbd6b803d8e15d8e. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QMCE72428104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25bac68c81d3454f510f409612925aa4f72bacd11d948cc160d43675441401d. 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/QMCE72428105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61169d4f4733f89c1f4bc541de2fb5f2b85747a18df7b5715f5115b3a418fa60. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMCE72428106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9036c6578a9d884838a75e95e4a1cb6f00e6653b882c52e52528f94eb8d1ff6d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMCE72428107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7eaf7f277045e76ffcf2ad8b54917a5d7e423b43ef06aebd19dad7be992bb22. 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/QMCE72428108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63735c92be372bde76ed9720b48998ec4c8f0e4dfb1a37dbfb817407c0df3eb9. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QMCE72428109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5d94bae6c86fbd01e4f7647fc47e77a677aca432b855e9e86582e8a21e62d4. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QMCE72428110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b2607524da614959761dca857a4840f1ee91c2cabc802f16e33bb07e5fd38b. 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/QMCE72428111.