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 0x2c5ddef6693363992b5c9af92982e4dfb70b6f71be7f35cb733c594061888a21. 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/c8ca9907-ecbe-4269-87c3-9734de28f304.json and https://artists.proofprofile.net/proofs/artist/c8ca9907-ecbe-4269-87c3-9734de28f304.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 0x7598ae5cefcc6aae1072cb21218635d490bc066a73a38e631fb043a2a63ccd35. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZHN92497286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db901dc0ab6a59612521097b8270f33ef4e4a05d2c4c931c2eb754a97ea2085. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFF2450438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e8c4c2a5d49bc83509616cc3611891c07b5ef876f61d771f1c489f907241e0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWFF2450439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a42af91ac33ce8d5f143eaa6eae68464f9723e6105650298501ee016245345. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:30Z), 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/QZWFF2450440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170429f7e1be630280f93e3ff2c6691905224ae79b836b16423326abfeb143f0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFF2450441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd10b0c9ca22d5d1da363049ac49cf9c07afe0192e01c1dc44b7c29d3a2ec5f9. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZWFF2450442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db901dc0ab6a59612521097b8270f33ef4e4a05d2c4c931c2eb754a97ea2085. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZWFF2450438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e8c4c2a5d49bc83509616cc3611891c07b5ef876f61d771f1c489f907241e0. 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/QZWFF2450439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a42af91ac33ce8d5f143eaa6eae68464f9723e6105650298501ee016245345. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:49:03Z), 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/QZWFF2450440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170429f7e1be630280f93e3ff2c6691905224ae79b836b16423326abfeb143f0. 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/QZWFF2450441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1622c006c2fd0a277c5ebe1b5e90e7dc9fa3fc88925d0bd9d986b94793845e5. 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/QZDA52589995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf40a4941cb1cb06713c2f911cb11d966244533e013e4a4d2cbdc452b8ffd97c. 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/QZDA52589996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dc80bef1b55e9122563f28475f1c12ef7aeba9ea2ff5e60531daa06764bebe. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZDA52589997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626c87ad512b378244c3717c324cd2e3b24d7f5f2a05e98e5654c07296905a2. 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/QZDA52589998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd570d62b505df5b617347ea7d4501412b7dd35a5c83693a7ddf57e4c8998862f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:30:13Z), 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/QZDA52589999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf40a4941cb1cb06713c2f911cb11d966244533e013e4a4d2cbdc452b8ffd97c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZDA52589996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626c87ad512b378244c3717c324cd2e3b24d7f5f2a05e98e5654c07296905a2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZDA52589998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd570d62b505df5b617347ea7d4501412b7dd35a5c83693a7ddf57e4c8998862f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:38:41Z), 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/QZDA52589999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69db629d855095be2360595d764ceb2b26133903663c2a1aa5e1a94e7bc11e7. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/USA2P2529163.