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 0x9a898ee538ef38101021d17289ea06f037f99470c1fe22d1f02a0e4dfe5b4a38. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df21764f-68c4-483c-924c-0b757de8b838.json and https://artists.proofprofile.net/proofs/artist/df21764f-68c4-483c-924c-0b757de8b838.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 0xd499af3a4371f2a8bd12363a62b5950af43aea2d6c3c31c6dde0b3b39f78111a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMPKX1805636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40055cb2bf188c84ee74a0b2c4eebda25ecfcba47d8eff6b80b35b4909c6da7d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM2PV1802478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8856f88a1623ba0ac471eca1c6195560bdea24ef80f73f03225ed6c5ffeb01. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QM2PV1802481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2b3e0b0403dba4a775933e8e4557439c3702f68ac52b29ea011d33722c3072. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZPLS2179853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3de2e0cbdb237432524659537e0b1dedee5cfb00785a8198a065ebc730e2f3f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZPLS2179854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083963993cddde6f9b61c96c4ab019a442569e0346e113a3c7e0eeb91d319953. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:03Z), 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/QZNWR2335611.
Mao Cuyubamba "Bodas de plata" en vivo (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf155b6afc8f31d260fd4030668ff740bf519f381f4344f50e4cac7d1923c9851. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:32:49Z), 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/QZWFM2366353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31f9fe97fb5695b6e56f50fe47164901d62691cf34da0ddac1a218188ac36f6. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:29:37Z), 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/QZWFM2366355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b6283d805cf2e84d4ad2b76187c87d0b37206b5a2e208fa06906a5406ab1fc. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:37:02Z), 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/QZNWS2496823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937d2b0cdc32cff28970e831677a7d67caa1dc49a43e5ed6bde8d768668626d0. 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/QZDA62587351.