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 0x2d377a5952ea2101c2e6935646312e546ae612bbbc27605925f8bf65b18434bb. 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/e8d0c9a6-e225-48b2-8e37-7b95d0c090e6.json and https://artists.proofprofile.net/proofs/artist/e8d0c9a6-e225-48b2-8e37-7b95d0c090e6.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 0x279fa25ab3492b8df9c5a9cac044c0f1b3d9e1893f8f84040833465bd04bc099. 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/QZ5AB2154601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d79efb9d901dd4aaf4f6627497855abf7402e325edaa5ca11abbd4d0431edc9. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:28:21Z), 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/RUA1D2391865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0575b5be4dc5be51c97c03835736bcb847fc18f1a1ff699e94601de72489861. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:04:08Z), 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/RUAGT2318759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501ac5f477dc5557315a74a7b81be78be4d351b3cb06256a3deacf720e79f04b. 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/RUAGT2335144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953a2ff85050ff45ca630ca1f7a36e1b676bd1189c29cf6357eaad7e5a1bae51. 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/RUAGT2368624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23911ab3d8ac67b901d80d0ef3dacffdd80784c322efe23787b90fbc9542853c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/RUAGT2413659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4263ddafb51ce957b20d591ce784dcfdad14274ef98b370e850485de567c4042. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:20:30Z), 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/RUAGT2475947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04be579fbb75f610b4af700489590cf023cce8cd8c5651037f022d89fab29c0b. 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/DGA0S2488802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0228b47d750083b61227729b958d12734da16891c4ba3998af8529433901c4a0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/RUB422404442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5661209fb6db2814b38e2363ecfb285e7a2bd27d072edc306b675efca5faf06f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:19Z), 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/FR2X42545107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8879ef8a3c603d4f50796d737870e4103de2f694aa585b0f0875cd89bf86c27. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/RUAGV2501661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1fe96e71475b3bae19b0ac33b52bb740109e0ffc515f51cc6d4d7deb959ab8. 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/RUB422500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f854107eabcdfbf68e1277e3569976cbe5007c578038c865db9aed629b77ea9. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FR2X42515178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0efaf412f40f2f82fcc2b4ea019bf0e95e8f47d9e11b353ee259f95a44741c. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:17:50Z), 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/QZMZ92503244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09013cd228ad42871a755ca1c80bc4d17255c84f9f4168fec11891cda03dfccb. 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/RUB422501651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c824185bbb83971ab3ca2d4e2d5817cce2a0e53c1c69fac683e1c3d21eb8c7a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:37Z), 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/FRX872557879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1e0f890fffe235747b533ba7a445ec2639ce6444977b38ffea57b8383b9d50. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:42:13Z), 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/QZTPX2503499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f41ada0dec5e9d070453f398886584f3b5600d25a1e1bb6f63134e61aa6ed83. 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/NLT2H2100419.