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 0xb667992de0165eae533c05e67971b0b248929b1dfe2b55cae86bfcb410ae067d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/902c676d-cb28-4a50-8b6f-e7199fb00307.json and https://artists.proofprofile.net/proofs/artist/902c676d-cb28-4a50-8b6f-e7199fb00307.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 0xe421fbd7217490a3a53c6dc4fef8a6737210937db23e053bf03ed4169e2a7983. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/FR96X2251104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888cad4332b4f7c1b054a56556aa9fcba974347816e3ff4e3f6f18078eb37412. 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/FR96X2251105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1894a204af6827f301250e5fd33c581ac1d671d743ef135f3ef776b5dd6324ae. 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/FR96X2251108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89af0342370e4b773dd90960722dc00a5fc719ddfacb65a4e04e753b35e3ad2a. 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/FR96X2251109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf21fe77130c25af427435bed1556dfdf47c3995b3c77f1ec7b251733bdb5a1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:26:13Z), 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/FR96X2251111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48ec0fe934b468d1910e3cc5f81da6da870998d5232df228178b8cee7c51405. 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/FR96X2251112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61e3c2cc42380dcbc1a0da8579f08d2ddc1d8559793d77d47641d5fd4640f8c. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR96X1903977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ba9a1febd17cce5c38ea90c8438c999c9b19c2c6256dba05db7a6a2fff4442. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:54Z), 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/FR96X1984731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760235a70037a6a5965582feb6731cccff488857cc1276a60da7c01f0c31b232. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX201998074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1994f8407715f4e8c4be826cfb98a13820e4771b462d9fc861911e8b23fa9a. 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/FRX202057644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5215dec1dc315b276d9fda8aa58484720ec2fbc574284bb2faf67883e5974. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FRX202057648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ef5a4b9923eff64ea2d67a0dfa3eab56b519d3b7f785bb90ea30571708923a. 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/FRX872008035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197a61a0acc09c066165ea173453543f049e73d0d842a2f3e91d1cda1322eac6. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:00:04Z), 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/FR2X42141357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e38174a302432788855aaa5501d0c578e1fd41e01d28e3329908990644369a2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:56:58Z), 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/FR2X42148928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f8f4be8c78ad7dddf1288478d4abee9133db4eefefbb8a55d1434af6f433a8. 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/FRX872113338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f721437582c3a15a6dc94a54183b41179a94f5d709749726baa9e881e691c5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX872114029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b46e53caf55c6154de5a93004a89313ba03f4c2a7b1f824af1f83d410e20e4. 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/FRX872114030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eeaffe7ac80e92726bc8ce5a20f92d452b6bb2f800a3c394514f9a8e34496b. 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/FRX872114031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cface4ffba3b0e8a1420fc3d0190d6190b6078d4da4ea112ccc2b9798bea04. 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/FRX872114032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783b2b9879541258ab38361ab95cbef6504dfaa751c5203523cc34ea635c65c4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX872114034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3f47f8ce2ff422c87cbac1107aa48339f158dab8f5404e0f880eb86c9a7eb4. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FRX202285122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04c729958c756d5fb4c47b5d9ebcc28a56e69ad7303a6af1c130fefdad4fa9e. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FRX762202139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed49826ef0b71648d86d44e91ceb1447010b246049268738cb30895c84738e0. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GRSTY2300754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f3b0c56d4fb1f109f5091b6e581c719bd63a6f27419949687d60c20b6b5227. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GRSTY2301049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335be4ae59fe566cf7cf455fc296f24933358237ae0a012f2ee4513c8dcbd3a6. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GRSTY2301463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93597a660fb144b07f0a1b68e75522d8ba2f95961997ef632b7b7c607f5b3cbf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GRSTY2301706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63cfdd73874823e8a5a11958f656d44c3e454a4199e9b7b05fb81486cd366c0. 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/GRSTY2301961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268feabf895af1e316b9f522cfb1afadd010d78629d9313119053217bad7907f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GRSTY2301962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfc3da5d5ed16a10ee72aabd0a7e9a9e1fb42444d0e538fa648abe91c98b0d5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX202459914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3d25c4163012f386fa7fdc83c888c501bda3f35a31e873c6b03c3915fdd84d. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:19:43Z), 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/FRX202459916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860dad877e89b7bc17fcfa643037520379d32bafcc833f3173609223d5e1ba64. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX202459918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5f6827950d5c7e0b7f72ddfadd226be37fd3acb843d5fc537f29f949c42413. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA082409817.