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 0x6cb438547a7a5c40f9a3b30cd9c1a52e29cbbcf85f1370f09fbbb7b33e594d52. 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/63d5f13d-4d04-4c18-8286-c868211f2c7a.json and https://artists.proofprofile.net/proofs/artist/63d5f13d-4d04-4c18-8286-c868211f2c7a.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 0x6d3a363cfda68af729cbdc9f2e1aa670d1c38daf0f62a50edcf78f24bc36a8b1. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/FIRED0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211fbee4d293dbbb1ec148576236bb419ea07824aec04741ee7995ddb84d5b8f. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/FIRED0900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8ba253592e3ce8e747c7a3d9a92156ea753a775a53fe37c86277ee92e02d73. 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/FIRED0900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fe226cfe994768d14f22bbb04c99922e5feee45e6058e2c0624ae94e9903b3. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FIRED0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc671e229cfcefd71811d3e29207aebf0d781ac29dadd88aa3ffb543b71fdc6. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:46:31Z), 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/FIRED0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9edf250fea15742b5b3e242dc4bb03b3c1876d76fd96eecc895d8f6333d0d9. 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/FIRED0900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb26f2a8f29a4cd683c89055c78594bc81872ee75625ee582b68da7616b46d55. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:56:09Z), 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/FIRED0900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cb578f1eef924251d929e70bc8d0f81baefcc853c0c6d170f543b9d8f044e4. 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/FIRED1200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e7139649c536db41b1ebb801f93b29e61d1ef4a7ae79917a64a3a4ceb7e637. 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/FIRED1200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11d9431b6542e45f7a6374608a12982dd21740ea4d5e11e6318b3fe1ff94d4c. 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/FIRED1200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9987041c001088b94c737e73230ac4be76a0456c98218df16ef25d873512cd6. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/FIRED1200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0010d5673efdd1523084fe30a69a43bb773a8825e5c2d9ddf7bc483f851c163e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:12:02Z), 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/FIRED1200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4532314a11e60a7b39036ea9205e5849861b63570abf7eef088ffd406c4ebe9. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FIRED1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a20beb861bbf0130d5f1a922ca6e907fdf60c4959f6a8535f97b68115c05f2. 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/FIRED1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf02712334aaec05718446d60378584da20aee63b9f29b9dc58af831068c1adf. 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/FIRED1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ece33949fcf5b873ce8d59c304a4ffbb02693e764b06e7d5cdd5a45e9113585. 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/FIRED1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3831ccb78789a5064ff291ef7cdd6f78210de3c2f254380e37b5868f06765c. 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/FIRED1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2230fdc3a13384420d00c3ceff4d604383a98e39c6d2db5105a8ef75a64d7f6f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:47Z), 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/FIRED1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce9f226434caca3a16e8b45c7a9e1c7d4d191a569ec71c4e14d097c1b7e2c1c. 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/FIRED1600010.