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 0xee1263cbc58d40494278c8e59fd68af00107d3cac579d4e1c5ddf71beea96029. 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/0f94ca36-8686-4d98-a8e9-9560960d6518.json and https://artists.proofprofile.net/proofs/artist/0f94ca36-8686-4d98-a8e9-9560960d6518.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 0x5199839b66b682ed1eba9d1f775e9b06149b6f73c437ea71ce314809594d1874. 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/QZTAX2384647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5596b6f89811b49533786f5411189e80697901db23c2cf899a16115989d73dd. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNJX2280316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f659b4789ca83e107243c5d50d00b99da170f39cae5813efddee7f46092f37. 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/QZTB32455200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf00c0b1404368f9ca1874aa84016509273baee5d759cbb4dc9414cd7d15668c. 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/QZTAX2439262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bdfaba4594be79f7eb78821d85cf7558e014939b612e03f3ce12acfac76534. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZTB62474996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82b349ce3d5f357686b440b73cc79f0dc8b68017b8fff12c901623834bb6534. 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/QZTAX2437469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25844832d929804a4dd65099eac7903d6aa6abc6700f110be911c69163c4289c. 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/QZTAX2386875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc27fdbb1d19796839103bbb0eedf5f577f620bcdf6502b72c663a26695358b. 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/QZTAX2387030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1345fc770010298a73b5dc56056e8184ceccb5c6f358b035e49910ea434b5208. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTAX2383514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc09e53ecbc98512e7e71ce59d7d996a3d56cd4e4e2c35d0f443a13cfc7704e1. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZES52564697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69eecd7f4e975d1ce1ca8bc458252baae5284e2f13155d6b115d16c425639952. 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/QZDQH2518880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fd90ba43d8f369855ab250fa54670d8417161ff28df336e254b8b3d43bb366. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:53:14Z), 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/QZDQH2519858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2741140971589877ba731d97e849d01971d6344077617c8ba1a8bfcef4d39066. 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/QZDQH2519856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180a1a2a2b63ec30a8d18360b603ba66aedc3fc97ce5aecf44d46eab5ce98de1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDQH2519886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e03bac58fc080c15f1415554482d7e3e84062380e69e477f8f12d62986ea62. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZDQH2519816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a477549845d29bdedf3faae65a8aecf6e5bea8055e6c4b03cb710f5257b2f86. 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/QZDQH2519825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc777834b804e916d96e0422faba73a52e8455b41b1663ed31d990b53e71779bd. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/QZDQH2519988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8567fbafbed84a60a3574a7f3cb4cb3d054192b0f6f6e7898bd35565eacd97. 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/QZDQH2520079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711fd9a7c47d6330ea2d8e4bdd2f3ae992de5de096f9ca2f5953913f092cb8d7. 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/QZDQH2520077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8455021905dd84ff41ffb07b791549a6c3af23baf3ecc2ab871dd5b3da42826c. 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/QZNJZ2584241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c0f160d0867868be49eea189c58adc552b682e82d5e0714953c0beede2f5ae. 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/QZNJZ2590701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1929abc927f044d6307038935f30b48a6bf3f2c00852cfbf7055e3b09533e6a. 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/QZTPX2505246.