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 0x93fd466ce4e9f070051bebdc65af31d3458b773daa5dd143b06c64a4165acb48. 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/fd807c14-b48a-4bab-9baf-af722832005e.json and https://artists.proofprofile.net/proofs/artist/fd807c14-b48a-4bab-9baf-af722832005e.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 0xb10f5fbce9a443ef7b7e725a2746e23b9f65bb07bb6cdfe314170db090a9ddde. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX872184292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248681ca12718b6d5bd809d91da05fb97e0a1745f7906c49d5475638518026dc. 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/FRS182152273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e124515995b65a6d67110247c12d78a79c7115a8ce39e8854d971be2d8eabc9. 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/FRX202238217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fddb0f04a79828454965c008bf601fda0445647ac8418e6234dfe27b76ed72. 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/FRX762235835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaee45e226db1752455054dd3d70deaa33393e2f6cf343a14b493ad0e7b836aa. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:41:57Z), 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/FR96X2318940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0999e06ae71e4d728cd85e6796d6570c0226c45c79811a9e0b6c398c87f804c. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/FRX282397759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44091f36bcaada3aa850f0e4c0cde4dde803fe86ac03f726a0aa23d7b59cbe25. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:49:14Z), 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/DGA0L2452910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af3dd1b8d22bf4f1369770e3604f6440169f9b2ef1df772e97d77c66c6f9bee. 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/DGA0P2496096.