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 0x45f641e24722121d7b9b761e9872d78e34131ffa586c2dffbd9f3340f34109de. 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/26c0473b-67cb-4240-8f3a-b0478158ee96.json and https://artists.proofprofile.net/proofs/artist/26c0473b-67cb-4240-8f3a-b0478158ee96.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 0x93356c303e236a15fcce687f76d9425b0241c9e83c3878f7030b89efb55e9591. 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/UK6821623115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091f420d8ebd9668388392abde413c9f5572c43d07f781b63aa5ec363e43cb75. 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/UK6821623135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7deff8ae295ba012e17c349494e2ec83c424976a9f3ad0927ff62c5cb6c25867. 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/UK6821623138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085e5d47ce5cb310efd07a47d2f67fbb7ced2703b4db565bc269858a24846e1d. 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/UK6821623140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9949afafd96b678d6204b3a389ed2aef991bc1a886f62a51d058e2391042330. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USA2P2201973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261eff57e75d1769e96f7b6bb680495d1cbdb034f74e5bd84b6cec2042024e15. 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/QZK6N2268671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a28f986506ea3788f3271d667163b54bd17400887b1eff0941caf4b350be8d0. 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/QZK6N2268675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84aaf7e6a4a90a030c1e11998b2448053ecc14bc24dd38066013bee1d00ad27. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZK6N2268678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b745a7c48d8ad59b955d5afda1e47ba32d8cf3691734adde2c9de3ed40eff48. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZFYY2379413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e5c5ec367c25991a80688afeafd17be4d9393ae15831bf66c24956ffc60e55. 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/QZK6Q2376100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864917bdd9530f0dd867d9600c82c60b3350d1ce7fa63d3b1c25e27fac569a68. 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/QZNB82479690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998cdc8e9f1460abae3fe19e986147cf3c8ac1c6e25abc4744ce5697d119cdff. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZNMZ2354493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc9c10a9c0c5ddaebaff01c58b91bb362ee0751d987fe1e7208578bdb4a6825. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZNMZ2383730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3cb16721a317a55fffb227e4de753fa25edf0c975e8b66d9c6b72899db9900. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZL382455361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb734d5df79eeeb53b373d671be02966a6a264fbd1ec00e7c1fb861988ef2ece7. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZNB82479693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33fb5b57d4bc237c0d541f741f76475cd2c84078b64ed2d0cc7da574cae96e7. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QZNN22319718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3814f1a8955d25d4921fc72608353d973a327f26aa4c3626b0a64fc826b425. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZNB82479695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16cb965c7bd7d536906f24282d351417fa331d4a5f629c5cac0908952f25aff. 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/QZNB82479696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb41dc8668970f93a3707e954ad3e31b30278a0b917abae07d22e3743b24fb43. 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/QZNMZ2354494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b06b2f9523ab0b5674aa4f8d9279470bd7f9b6405e1d38beb9d3ead326176b7. 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/QZNMU2454959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6312313863b85688b0812b968d7f674abab05c3dad15493bfbe3091106b0a3d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZNMZ2383731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6518aa8bd88f54b4b3aed25523cc250eb0a5ca6c5eb6b00cf97911d3abbe3df. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZL382455362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8efbd0412c9e49db53681f24007c09921edd9beaf9c5311479f1ce665cd718. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNMU2454963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1bd182863ced00a747134711ec7578d61501489d0cf28d4070a830f273ad5b. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZNMU2454964.
Did You Hear The News (Mako & Mr Bristow Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d0a5b621e34470af77c862d6415b8db8f04406ec8279160bd3d3fd6e19749d. 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/QZL382571657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83db0d8c2411aba700dcbab7efc27f07072e402215f8bf80ffe59bafc29feda3. 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/QZNMU2558609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87500a06cda784877af4f5147a83ad477526bc5eca8b0c47ec8d8d9aa8da993a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNMW2547129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bf7c720c88e9abd8c16167de74f2f3abbfbb85c96b85fa47d946672349f69e. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QZNMX2538526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26ea4e361b93434ae3c2ae7035ff35b06007a9e8f3d6bd3a5d41831fa6149f2. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEEQ72215801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3328380ee899754268e43d4f87144a18446c0101137d95b6c871f67551a90b4e. 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/DEEQ72215802.