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 0x9bd445265f828ec193361060d14e73a087e23ff067ec347348458fbdcc4a0ac1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43fa8f9a-049f-4448-bc1d-7eb3ec650e97.json and https://artists.proofprofile.net/proofs/artist/43fa8f9a-049f-4448-bc1d-7eb3ec650e97.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 0x081dae355811b97f116efac18fbc0a58355bf40319b8cdb1709820763183ed46. 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/ATTF51500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b590dbe0025de248e59e747b6a2e4ca10fdd698b0b2c7e185458bb0e36a9911. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ATTF51500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea80a36ba709af246963c4cf325c6346232e480f593ea39842054a46b4bcfa9. 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/ATTF51500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b03f617b61bee6577ed2f8bcce1c2e159d99b5055bc8c2ba154242b41911c0a. 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/ATTF51500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92637718e8a69974ff9438620a88789fd3dff439b8d5accfc4ec78487ca7e29. 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/ATTF51500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1887aaae513505b8558a75a1db89b8a38b2b0dd46375d017c8579d4df4b5d2e2. 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/ATTF51600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64e4e9cf7be44ae7d51ae878d46f835cc1559fb01e670777451710ad9ba073e. 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/ATDV51700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24400798f42b7b33d1f8c62fd6022af1c1dfb739a79ce77b8a68ef9762ddbca9. 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/ATDV51700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1682458d60ab74735525c97945a0ca9e2a616f67de5162cf6ff2562c473774. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:26:58Z), 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/ATDV51700011.
C'est la vie - DJ Ross & Alessandro Viale Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0509a42ed7527e89ce31ce49afcf99284edc8ce06d486832be1c96315d9e72b6. 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/ATEJ61900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bff11e1a58b956f1a7c1e1787d6c6d4331b96d3ee4c5c2202db4fa7a50f4e89. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ATEJ62000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec157198483ff83bec1b2cedecf01b95c5e8d195018a5cb4b4fc2bc0cf090080. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:53:30Z), 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/ATEJ62100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614a0e3630bf13002b8cb40a69765e1eaa6f636039eb7382ba038466b9fefeff. 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/ATEJ62200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01773426edfbe6eb59a613b48e3dc2317196647809b535943270dd9669259cbe. 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/ATEJ62400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9dbb3d4304efd3ace960eaf507321fedd8b47314cfa83b24dc2530ecce786. 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/ATEJ62400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c1f6114b23a60b756c3c4069f29aae73bddabff5ae935192c63fc6851c742b. 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/ATEJ62400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf48fb218c28b453cb44bde2083a501e0a51fa72e23e18f30965eb9dd5cf3c8b. 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/ATEJ62400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccf9dbe3c81f52a779a0cda970c12ff6fc42b5431c3291c2f49543776b24a3a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ATB150200212.