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 0x71c81ebf67a2776a19259b67e65889bb1c2b21f7e11695b0d4ab6f334b7b5de8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c74db7b-b3d2-4262-a392-6ee73e13b164.json and https://artists.proofprofile.net/proofs/artist/3c74db7b-b3d2-4262-a392-6ee73e13b164.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 0xb654b4b7127715bbac25a762a19ce7a0972378f5ce4b4b0d069ee4d7152da690. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ71907429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f92b634f7fb647d70cd2203e127278b895a925181ffba52dbfd706c9c4eb28b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:54Z), 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/QZHNB1934629.
Shalom [Wie traurig sieht es auf der Welt aus...]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b587adb1fe87d002726b1785cfe673a94c4d2c9691ca22b2b3dd7e13f445e0a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6N1980365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7c53866242df4525bc4a7a0607bec72487357302c4240e76c1a347889241b7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZMEM2091104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b257344501b13481c4b32b2e7e2b2105b62e35e82e5f34c916fbc2be2d6f53. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMEM2091111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc761070bc46ff007d6a3fa1560c45950eedc87c7915e78faa7f52a1f7e9450fa. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZMEM2091112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59d36d21bff58f8b3922b40c81eda34313f5ffc62484a8a617a730f52df1636. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZMEM2091113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be62c15f51ec95da44252356bf50e19113a02dd8f03bf1007b1deb7bdd513c1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZMEM2119179.