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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 0x695e157ddbb683603f184f24777d8894ae8c62bed6971227930b3992ae82bc21. 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/c591f4a5-05a9-4bc0-9a1d-7bc3cb673ddd.json and https://artists.proofprofile.net/proofs/artist/c591f4a5-05a9-4bc0-9a1d-7bc3cb673ddd.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 0xf8b66af4f4f0f1114513af4afd16f046d10ff18f0c33627eb3e0df154672917b. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GBSMU8567736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084fb3b7e589a597d8ab0b127295d9096307fd89f1d70c4db6ed0b5fd3e70fcc. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:49:33Z), 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/GBSMU8567738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf19b6039199449495e39446a2c293242b0d24cb792b104fa815d1c09a58991c. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBSMU8567739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01d6e815076897848884d1e2de0cbb25d3df089d8a8a799a7b8085bc2012219. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GBSMU8567741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259142725c4d45727535cd6722f031a45cf3abb01f14a608b266a2f960d4f70b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBSMU8567744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ebbefd5c9a1f95dcad142c33d0c154f523fdd610c834579e4264c684c8dc51. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:40:22Z), 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/GBSMU9774662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf260df2525461f5ff32f94aa6dd63fd1c625f3562c23190973ad2cc0147d757. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBSMU9774663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef9913bd4da3496729834c383e40b697ba9993ad8ebe2804798ee91466c4ad7. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GBSMU9774664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78972d513669993b90b64a6d0e50cd542b95b9d501588bdbd4484679e91ef8d7. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GBSMU9774665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4913a8914809b28c0326dc4bdbd1065b98ddcac4a7167d2e7199c6c195013d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GBSMU9774666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eed992efafad261e23eb8d19319411c2884a02ff2c1420229e64c5201399aa. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:45:33Z), 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/GBSMU9774667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3675700fec88e55301c0d058552d0561cafa89709ff8d8e93964df397380a4b2. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GBSMU9774668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59ae6f3774e7cb17925bd91b2f87c567a47b17be8b467e91c6b104c5061212b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:31Z), 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/GBSMU9774669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb030b1ead1e128920e10aa7f3116e8383df1878a17c6d1055421a36d297febdc. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/GBSMU9774670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ce404a5ecf72b6367c912b26126c8336893969a91382f7960e6092487b81e2. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/GBSMU9774671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5651e6b4f1fbc33bad8b505a56bbcbd6058ae7e1d57407566419fc061d191891. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GX89G2346237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cc6ce39140bb0ed7b88ae624c5f01a0cdf74a0077d436cf76310a5263885f8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX89G2392172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ef9dcbaa3e67a1feac7f212b63476eb7f0b7ec0feec12f7d5675e1670eb42d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GX89G2333841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd2cafb315f414655d6885f9dcc5399abaca3ea095a91ec6003ef79b16ef48b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX89G2332304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfa5dc1f336645f72cf409032c80671ba7a93f3335df17685f64411fd1d4d17. 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/GX89G2363627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5217193d08705bf6fc9d6456a1babf521875d55bbf30f93ee4207975d59fc5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:40Z), 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/GX89G2393591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4257426c496caf75b66fdb3a20bee2ae3cfc41ec67a4425bf746c20137e1d05e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GX89G2359021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6452ea658c92de684b2c3bf67ef58d45e85b0a6ed48cf44dd90ca61e8705fe33. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:26:37Z), 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/GX89G2360893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78578cb5aeb482891699d501472ddd081940c4549fb3268a734279607409509c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:24:43Z), 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/GX89G2314745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75499bfbd1fbfd86843081427fbf6739916be86fbcee3e86b9893356b084168e. 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/GX8LE2368292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08553f56dbceae9b4860f04f466cbeea027a3e387051c5bfaf1651c18e5d9cb0. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GX8LE2354439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7f0a3bd0093c06a58afd96261946ab6b6cc0f3c382733d54c84db798108634. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GX8LE2368685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf50a3d72640529b315fd936a7b245ca7e82afd3050726f2bc8b870d720bf81. 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/GX8LE2339143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738b4199e3219227c8b204315a9db2e51f375a9506bac713decbbd19bf4105aa. 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/GX8LE2390566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048dfdf4f4b973411afca452847e89a3176d8d09cb0932bc4b52c85668b8e9ab. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GX8LE2378525.