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 0xf323476c694fbc34736d75778239410096e9f4830f80a81a77f93e5a7eeac764. 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/2d1d122b-4900-4b3a-a707-03cc541fe28c.json and https://artists.proofprofile.net/proofs/artist/2d1d122b-4900-4b3a-a707-03cc541fe28c.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 0xfd563e48a7d054da27fb73917d91f7fe6287bd2c56048621d7eb6d61d4dd2d40. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/CBF8B2450743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25520dab64d823507ec6324597b54b1642d7c756181ce69f823ea5aeb90ab125. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/CBF8B2450745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0eccda7ded73968a19f63195355aaca745ce4d4a0210b11929a0e87df765cf. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/GB8KE2500356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4457702d715252f06b4b8fc822df3f5ca0ec250ac1e6e9bf5715ca87613d93d4. 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/CAHQJ2593065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0b0ca84b0d85acd268c09fcc0adc0565cf21256b8cc15f81e3140ade884c81. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:45:59Z), 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/CAHQJ2593201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e38c7498afbe8a4236adb20da532852990dd4f7a0b1044ec8837673a40493a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CAHQJ2593202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51988db786e43ec4310a98aa5d1dff2b60c4632b40ea2db749f2302569d5edb1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CAHQJ2593204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10ea28ea43071bca0c05d25a1bf2e47d45f8876b13c0d6917ae9cccde9f7062. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAHQJ2593205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988bdc201e94fe2a09b15ec45d2a1d4774abbd82fc9e8c9cbebcf7d935079ad2. 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/QZN882551247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2639d5aaf0e586072d3ef88fabf8e1a150b0ba95123305764430dad358fe26. 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/GB8KE2506994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7827359fe358070b8d802addf0c34bcd7199ac08cc390749f888c1e4b8db6f8e. 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/QM6P42522820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c160fd74367558a02a8ef06b3eec86eb0235221e25b75b23f70ccd3409cac6. 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/FRX202544717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7442bd76337ed3ecb643ec288d58ab86c98e392db2d7e5891926d2986c950e6e. 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/GB8KE2515467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3da7c42d3e948b7592bce01c2d2947e3c98ac0237c1fb806bd496bcfb2dd0c. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:01Z), 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/GB8KE2515468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94df4f297066f8f2e2e83362fd14433e8a4d39eebde5631829f0df73af09461. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GB8KE2515469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7888d67362320360271b8a480753e234a70e2edc074ec8083992fc95f3c7ffd. 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/GB8KE2515470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fc8b15d2d34901e768ab9bb1be6514e98a62f15f02ac9a78352a11a36379e6. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/GB8KE2517796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bc8e31b37f88d8f60ae0fd91bb1e72562fcfa1853b6dc15fccae14b22e7a14. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QMDA62550815.