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 0x78421bb1a4cea18c4dec832f31767b505dbc1e30a6731702f271d5fe700e9a2a. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79aa5da3-ab7e-4cdd-a103-d08eca98db86.json and https://artists.proofprofile.net/proofs/artist/79aa5da3-ab7e-4cdd-a103-d08eca98db86.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 0xd48a2e3d7412b9d73cb3b8ee8f061f36e3cdb193a4ae40a2d6cd62343bc80d87. 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/QZMEM2437463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7a7ff420e56c229413f64a69993c24cc66f1290c721236c184c7af194b4d30. 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/QZMEM2426650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287b33fe161b6af5f96423922c9344bfb6b586a4cd5562d15d202c8b34c10e70. 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/QZMEM2439095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbe294e090a162cbf9d98a480041e0c6120db98db53ecc4975e148fda1ab42b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZNWW2462301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b46b40f9f76099e8b47cfcf558bf64089eb9c653bb43d46080f933c0897138. 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/QZRP52475258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4936fae58ac9923f8bb46e3ddf2aba836e6479e296cae693d9d6ac1df26234c. 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/QZTB22446254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5b04390187fb090cc93d848681fa8110bbdb8f774ec4afb688d5049e0031e9. 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/QZTB42472448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b7c1085506096954d6c9a5f0be54bdbdffcd4cdea9d12aa4d2a1e85d9e0c8. 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/QZWFH2491526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffaaa7836c985a6066b84cc4367289b85fa08f776f0e993daa0e7ecbf0fb77d. 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/QZWFH2491527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd356c8eb6adfff342749133632420a9148bd243dd5dc103b8f87b714ec96cca. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZWFH2491529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62205551044c6237d83790ef616da940d1e94563dce9bba1ee5e23ad5d629fec. 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/QZWFH2491530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6010df7db2646b990f763a7482f8f7d9b11ee0f6b0cf9ee1d47c2f359133892. 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/QZWFH2491531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e9a7708e3691343cb571dd5d0d842d194d68affffa1d9c063cce9dc0d7d461. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFH2491532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86ed6320e34440b4941f40a513631743e5b45f57c8f08b0d0d68462ac9afab8. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:42:23Z), 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/QZWFH2491533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaccc7729e893b95a330025806a5fcab8e29a5c073909a6e30b1caff240141fa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:05Z), 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/QZZ7T2442772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384d621b0e89eb3f801291d64a39fe1432b6575bec2abedadc69cd2f81cb8229. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA52510517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fc3062d7e4c718adf044ae43d51522f068260c591bed735d737f62cd373b89. 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/QZDA52510518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4095928685c5f94cadb2986751f3929e548ce507a8174e1cbd821829e4cfe40f. 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/QZDA52510519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d56df5bebd6ba9fd9f1c63e26f04f8c1d97cd5b13f2cc9a135cd25f59472fbe. 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/QZDA52510523.