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 0x4652761cfec3439ccb1fda01bf5e5ea61fb0cc4da04b2b264a2bf4beacff7dc7. Chain 2 (Bitcoin): anchored in block 954063 (2026-06-17T07:49:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47241df2-41a7-495c-8a0a-e104a5a64286.json and https://artists.proofprofile.net/proofs/artist/47241df2-41a7-495c-8a0a-e104a5a64286.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 0x8becac94346cc05f8bfd86cf1dca186993e1b517c116075333b46a0211a60599. 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/SE6XX2517368.
Midnattssolens løfte + Kærlighedens kraft = Midsommarnatt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55532394fc6f7ad9e54093a26280a5bbc7a4d3cb8319d192e7634f4f43ba602d. 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/SE6XX2556457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b591cb5f6707e26cab178ab7a837eb369724e824fab93e24fb872a6d56c2a0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SE6XX2556458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a6cca10176743dacbf3c7615f59f58e57a5d6c4380f4da8f8eece515306993. 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/SE6XX2556459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe372fe6dcd9676304fe3b8598908d3f019d33db34a39c18ecfef1a35482f5f4c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SE6XX2536694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc5c8423df19ccab7ac37ef841209f379810121e4139139bf1e42f205fed768. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6XX2576921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51197390f81b42b6ff11a3ace5ff1b9e07d30319092f764d82d567cb2f38d19. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE6XW2556559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13779240aaf2f0e48ac93d50e0b508ece52576a07c13228c73a74e9dfadf0d3. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:01:50Z), 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/SE6SA2545131.