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 0xfc89fecb5427f1f3b6ec85defe251bebcc6480aadd173e4766d3897904b112aa. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f93618cc-753e-4f4d-ab4e-212a12756d4c.json and https://artists.proofprofile.net/proofs/artist/f93618cc-753e-4f4d-ab4e-212a12756d4c.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 0x3daa3d0290e335296e6520ac8be195f194c897e128d39ac326674a809de7ca3f. 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/PEPA51711093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5532911a9c7cd7651a6a4ece1ba9765f6ac952ef26d83067b033c9417bb18634. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PEPA51711094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eea5b857dd8870739e52793590ff62d201f9b8ff84628d2024de7eb10db8217. 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/PEPA51711095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aa5692bbaf7a302483f4c2df1c8af6a610d94e9311d58731c6763b385cfbb2. 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/PEPA51711096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d101e69580f673ab04e02494bd12883406e2783d1626e5e8e2cf7537f6e686f. 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/PEPA51711097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691db6454600d9e5b3362c65bc22b71e14531c274fe98625e37c160953526ed6. 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/PEPA51711098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5c328dc593e608ba6551b2a5294eade0ee6d99c005e9348133a8f615b7716b. 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/QZNJX2306106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecc8a9ba59d87cf5ee6032e6b41946e4a2179a25886536927459193fb39f69. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNJX2306108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d85fb0378eed70ed5147736a112d76e64eda733cae7ed9283b869623677893. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PEPA51711092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daa3d0290e335296e6520ac8be195f194c897e128d39ac326674a809de7ca3f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PEPA51711093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eea5b857dd8870739e52793590ff62d201f9b8ff84628d2024de7eb10db8217. 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/PEPA51711095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aa5692bbaf7a302483f4c2df1c8af6a610d94e9311d58731c6763b385cfbb2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PEPA51711096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d101e69580f673ab04e02494bd12883406e2783d1626e5e8e2cf7537f6e686f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/PEPA51711097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691db6454600d9e5b3362c65bc22b71e14531c274fe98625e37c160953526ed6. 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/PEPA51711098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1836d82024115d3f178501a2096a06b5b85590e90a143b476f23bf73c372712. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PEPA51711000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5c328dc593e608ba6551b2a5294eade0ee6d99c005e9348133a8f615b7716b. 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/QZNJX2306106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecc8a9ba59d87cf5ee6032e6b41946e4a2179a25886536927459193fb39f69. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T17:00:26Z), 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/QZNJX2306108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b383eeeb6b6cf4b393a56ee97c9538bc63b496b58e5bf2f276e1ed7acb31b07. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/PEPA51711271.