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 0x593e17b407b83f81f009937a672beb0bfd47178152f4748b0812ecb1e2baf096. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6058b1e-660f-4227-bea7-ccce2d1d2882.json and https://artists.proofprofile.net/proofs/artist/d6058b1e-660f-4227-bea7-ccce2d1d2882.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 0xafe6f7f3f8e3b8a608f1e7a7b6b5ba3605daf143604c059b0e80326226a132f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZES92342898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f22c2cfcdcf4ec89ed60566ca92b721f37cac426d8f476e5b054035cf555b4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZQAY2386544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd904b452f1b99f486bdb4732eabc98084d5142d4571fa7767001fd5cf13846. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3X59903303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5711785fefa426cb68cda210a1f79221f7a71eb2908825b117cdc55da166b57d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3X59903304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f6434e97a61267a380d61f1ae1875d43383db3223ef62928072ba18760adc2. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/US3X59903301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5d6b5b1b1c2e5d59e32739627398cdc1e0d5d6d3635c24c79b12dd02fc5e31. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/US3X59903302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796289bf700a2cae937676dc9b32a696448cae3b35f25d68a02dd33c7837e08d. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/US3X59903305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8778f80d2cc458655707c66926f396df057c8cf2122d60b34bc5d57f4c4e242f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US3X59903306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473770652f70435ab976f0e69cf6bbab786e639c7ec66091ca98ad2d1e443ab3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3X59903701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c2617f1127f72b683e21ac1f888cc8ccc05103a61988722b180d369999c45a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US3X59903702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382697907376bfac0cde4dee84c337dbf33559586371e5d5ebe3fed1a448b26d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6P2197644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6872c3a0d9c910ba3ae9ab2a614f5af59626fb3964f20d4db56b7064212df949. 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/QZK6P2197645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1453b3c7b6ce7c61bb88b2ed68d4a5c39100c21613718791ae1e41017a04d7a7. 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/QZK6P2197646.