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 0x11466da3edbca599de8c9f9158d930cda008f893f0275b9dc04445d0cfada611. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8c7fae0-7ce5-4f26-9c08-4bc97c2ce8f9.json and https://artists.proofprofile.net/proofs/artist/f8c7fae0-7ce5-4f26-9c08-4bc97c2ce8f9.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 0x502dad6027a2e8f133da41f9d60154a95709475eeb8a184910b5cbcff3e2c75a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:15Z), 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/GBSMU9866795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ec50dc86839a6bfe3c389326dafd9c77e63b90c0f59c2822858ff3dc66bf4e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:01:37Z), 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/GBSMU9866797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5ba845f0ca13b1d8175861ddf3ea7ee8cda46d1b24f90af90c6cb692a04848. 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/GBSMU9866799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ef3b823aa358fe0311b4ea9461d9469c425a293298f4e98657a922a99b0827. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBSMU9866800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf531fcf650c4d5367d5605e0f7f575ce8268412c2eeb16b0aeb57f70cf0d5c6. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBSMU9866801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225523413d655ca279c3638621274516d588e6c4f6739da80aeb8900ca21a27d. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:34:33Z), 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/GBSMU9866802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53db8f58e42185dd80aa97cac0bb5dbb726a3f46b00d9ce3b7c110808b110d7. 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/GBSMU9866803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5e6542ba59eb979150105aa233b0e166172c7ec6c2ed28517fb2f4058c649f. 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/GBSMU9866804.