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 0xa3ed3da02e20c4355b100afb9c6bc434048fb8f9b4910d8a554dd9242bcf4dbd. 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/e99cda38-001b-4674-8337-4b22006d71c5.json and https://artists.proofprofile.net/proofs/artist/e99cda38-001b-4674-8337-4b22006d71c5.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 0x759923c0c1e5cd1f7e7b28f42134bdf0449f48d65df50fb5c37cae221e177048. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USUYG1078481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7917dcff0172425ccbf2199ebb3721d2e6535b0fa6029a2ff789d47b9d9c421b. 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/USUYG1078482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cf42f36f36341af10e9f619aef480ba0918c4e1d71e1d22b2d565b8609fcb7. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QMWZB1610865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186549261a01f77cf2d422ea9e5624f6f7684c697ff1f7db8678d8224eba80bd. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:25:52Z), 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/USUYG1099251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d829a2f01e31a7f29acf32703a2f4ee5cc64087058d3266cfd7360082a5b9b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USUYG1116255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1b00fbd0a084c98283cb1dd3a907d42dc82e5a79720c01d361a3ce85d7cd21. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T03:24:49Z), 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/USUYG1135487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde7536c4a127df253a92835cd5422c3a946b41c231a43409159b0b288431b4a. 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/USUYG1136941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabcafcb43f397d3f71b5c33140d70c199f421ff71f23d345119b8e6a6b79a5e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USUYG1270325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16392c239ad34f26ed95992732b6ee3193c27d60a75363178dd80c9abe52fc42. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:17Z), 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/QZTB82256698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc276d531cc0fca0e4f062d48156bd5fecc74722a7522e575acb84abe19bb5a94. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ762437743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663fd2ea1e3ae7a15f0d1b5610b4dd3a51a62814cd4fbc18ce4cf2b2f4cf94ef. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USLD91773188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663fd2ea1e3ae7a15f0d1b5610b4dd3a51a62814cd4fbc18ce4cf2b2f4cf94ef. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USLD91773188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3f7e77631258b85c3f61721a0c4280c1f620b3f3ad67b1ff6138e9384b3b94. 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/USLD91771923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f23feaf1c34c753fc91cbe0879b712bdcadaa8ac1855c03230d6688b058b2bc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:24:27Z), 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/USLD91773812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a083f05d2dbc6d6b7fa9c93c739c9e9ee0d768013304744b1ff582ea4daead9. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USLD91773813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958aaa0aeebf7dd9d89f377dde587bed2f643ed9e42eac5c1fb582048a76bb2a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USLD91773814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344aced36cc65fa2f746358ce8d7ddeec1748b69e1abe385676b4ad9f6002ef4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USLD91773815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc33359e0b67abde78c81df40afd0d98421f8b7f5cb3d3a2f7664cd18fbd92b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USLD91773816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424ef44147bd5109658fe08805cbf37be8023f5110c0601db99178c94a3e49f4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USLD91773817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef4bdb04827b7eb1c7b636c7c620570132a505d90a13bd38e34c1b58d3a5ed5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USLD91773819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f834ccad747ea3d6b34e0d60112d78647aef75ee1466372068dea77b24abc8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:28:50Z), 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/USLD91773820.