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 0x978665d612f50a3013a7648d214e25dfb4229560efeffbce293e19d261711e0d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef7a32a3-02fb-4d6a-92ab-f5883e4e4356.json and https://artists.proofprofile.net/proofs/artist/ef7a32a3-02fb-4d6a-92ab-f5883e4e4356.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 0x1b57f944ce60ccd3b1ff196f8358a56d3d479d79cd5e9b57df39147d86d10b8e. 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/QZ4JJ1603460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab3b398b7405059e881e0e3c6c0ae073f59d7a37dcc60ccfe2567cce6ccae7a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:25:43Z), 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/QZ4JJ1603461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56f217aa4a3eaa33bf902c91227ee2987c9e8ccec91fa9060f308e16c5f615c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:40:29Z), 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/QZ4JJ1603462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f2bfc76a6c67f7c84fbaa0a2a925e500988240280d50742d254864041d6146. 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/QZ4JJ1603464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcfe7cdead9cc30c385dafbed1700963d826a7c26f0ba36bb95df5f26cb8a0a. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZ4JJ1603465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9ca80f6a6911df9af2c9e1d70e00bc7176cef579838029da2e3d1d44e2d132. 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/QZ4JJ1603467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8a6641a0a2c35f93fa6e7099de53bd923e637d5c80189078d1bb215255e5e2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM2PV1815158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf764b5e4b6922f3549906c7c10b71b141832d867119db51dce47e5ee133048cc. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QM2PV1815159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf07e0e30714dda6ca4b9ff19c9de13a8e546fba586c69183d0425224c8fc13f. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:51:29Z), 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/QM2PV1815160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a91ad3d48fab2bbd73b34c98c2fe54b911091b086bc89fb78a7486b359feaa4. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:52:34Z), 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/QM2PV1815161.
Everything Is Meaningless If There's No Reference Point for Anything
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95103cb9d6ac0445be4a2a481b18c34a96d0c3e9725a40a9c2069debfd458609. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZDA62124221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c53738a8cafe7031c02ebe282d6619181c3a00e0e8d325fdc59750dc83cdd65. 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/QZDA62124222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf094c010d7794dfda944d471c8e775527799f275ec73ce297e1084e757fdb0f1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZDA62124223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fff33b29b172c655a60360f4d20fea73348fbabae0c4a847bb48a1bd6d86139. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZDA62124225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ae42f484083f54a583019ca57d4dd74c74880ee0c2696beac3a858c779028d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZDA62124227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67f02a6035a861710865c4efcbf613a2626c57e0e269f47b9be9cf415c6eb95. 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/QZDA62124228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1449acab476067aa96578d44d8183bb8655e60011c1e23cec91800b851fc73a1. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZTAS2206530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a624c0eeb137888e6accec3ec9774ad40b565efcb15b1a50f660f0b4822c2b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:32:30Z), 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/QZTAS2206531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa4aa8be02ca4f6483265d6cd5ae2cdc386ee233e53f1109052246425448b82. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:02:09Z), 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/QZTAS2206532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096693ce56719116d921273408c70d1d60bc1e4bab0f613f4cca829e3b947fe. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZTAS2206533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2597d065a57452ba1fd54d54d5c5c5b045d004dae2d15325e2a7f2fdfdc2dc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZRP42263314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc5820657ab7b6a8a23a63bfe64de8c8fa766dee8fd4b79078c456518e0c108. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZTAS2206537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8508240fd79ec9d834ec42450c1139d8b75a0b15e2af93e7301b4caf786f919. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTAS2206538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfa9b2e92ffede8af57cedd3200b9ca126e9543625c2f403117caa247eabe50. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTB42308738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3396efa8d120e677c7d68aed51666a45c627d21192fcd7c0ef5b992acb13a0. 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/QZFZ42477756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e16603a4cded906eee345a934922e52013cc78ab07a95c26ef9605846e4ed6. 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/QZK6M2487583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6122618423748e5a339018b7553ab58925d4c0be41374a1e30929d15b539e64b. 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/QZMEQ2497278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f35114ab3818052eb162756b807e757f4c083c8a6ea7f9b07e697074aec60c0. 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/QZTB32336838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481a4bdfbf0cfc0fb667ea619f3e4c670aa907b5ab067f66b5e8449b03c68a78. 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/QZTAZ2377263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3434fc5ebf76f1d4cc4165c6d8157d97bea77892497db78d9640e8e246096861. 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/QZTB72350772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6672f15b84aa42c0aaf76d3ac1bccf38357986fe636157dcdf2fae33af142de. 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/QZTB72350778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfa9b2e92ffede8af57cedd3200b9ca126e9543625c2f403117caa247eabe50. 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/QZTB42308738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb33347e19d912e513bb1d1977cf7bf5c488873bd278480058fc327192fcbf2. 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/QZTB72350767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481a4bdfbf0cfc0fb667ea619f3e4c670aa907b5ab067f66b5e8449b03c68a78. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAZ2377263.
Worth 2 (feat. Scuare & Kill Bill: The Rapper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fe689b37e34ef3d9946354617d75f10cfe3098beb360c5a04a240e12174538. 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/US39N2301246.