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 0xc65235b016d613edb8cfaaacc3f4f92ee7d49a880be0454c355cfd05665028fc. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ff0fffc-4937-46a9-9383-ee6b46970428.json and https://artists.proofprofile.net/proofs/artist/1ff0fffc-4937-46a9-9383-ee6b46970428.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 0x9365db304ca6fe455751b31af22f0934cf941764d25b0de1646cbd735987bcec. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZN2K2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068bfe4966800963b5a9150962d1b6578f8cf704bdff0b051a75a2937e427556. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZN2K2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d794874bb8fbc347e27bfc688685615ecab3f31913e3f00938556a0fc88963. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZN2K2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb4ff55f467d47d2e4f2f59902128060e6997772b4b31d0201933c4558e1dcc. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZN2K2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10740e16136f07023e0702366737b87d099bdcf69dd80ecdad2b4ebbe83cba5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZN2K2500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d792f9a59a61b3d60487ad0d05b9d449235624d7d1a5637b04af442ad710f11. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:18Z), 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/QZN2K2500020.
Cobblestone & Snow (The Love Me Tour Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0db10bd9085635583955e125af466e54ac8fc6eac816f4fccf3d3a53b905249. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZN2K2500022.