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 0x66246df7b519c801f92668c1e67301e9d0b836cbca93843d06713f32266fa512. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d31c9dd-2946-4567-94ba-46bd68a37f6c.json and https://artists.proofprofile.net/proofs/artist/4d31c9dd-2946-4567-94ba-46bd68a37f6c.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 0x3e184dd67834e6237d99d62e36fde4fd8f0155d578eff8314908c570555116b6. 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/TCADB1759967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcccbc152da88c845b93c279459b2858fd4e98ce1c90e0998b585de1f4f8ded. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCADM1800479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf000eb4df092063fb1a44d861821962775a471a6b1062cfc4f1b0e427e5f9a74. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCADM1800503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad51dcb903bd290caaf7ffff742f7f4eaa09ea90140a08afcd0f342c0a83c25. 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/GBTDG1301698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad51dcb903bd290caaf7ffff742f7f4eaa09ea90140a08afcd0f342c0a83c25. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBTDG1301698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bf9346d02d20fb87c93d0ebb0d2b3a878a586286ef4ff612f5520353c981c6. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GBTDG1301699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a83d8f005f97a827dd8598013527017b3da087d33292fbc5533b3187b467fc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBTDG1301700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bf9346d02d20fb87c93d0ebb0d2b3a878a586286ef4ff612f5520353c981c6. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBTDG1301699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd657d36ef987c221988301fdbe611d6827b458bb48940efdee5d85453332cd3. 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/QM24S1916470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605ae81dee3ebb5fb46bc7319183cfd01e16e1f96f01ab80bf06f09d01bb946a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBTDG1301954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0559ea43494ec43fea35d2bfdaf9d269205ee020b74241eed7a96cc044ff58. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:22:57Z), 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/GBTDG1301955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9079517a48c54b9d285bd8ce8c093b0a6bdce1615026914c9748982b12b78493. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBTDG1301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1279983dde34fa8398cb47fc9eb5230f71589826f6668804023b6df04baf6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBTDG1301299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1279983dde34fa8398cb47fc9eb5230f71589826f6668804023b6df04baf6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBTDG1301299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df64aa59e98192765347f14796e59994d17733d0a20b9f33eb7ee7a7bbb0b34. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USZXT2454735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1279983dde34fa8398cb47fc9eb5230f71589826f6668804023b6df04baf6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBTDG1301299.