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 0xf17014de9d42d8636488174cb8cda47f92f0eab150ad45ff6cda8873c16c15cb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5b5da90-931d-4b9b-8b8c-53ffb272bd96.json and https://artists.proofprofile.net/proofs/artist/a5b5da90-931d-4b9b-8b8c-53ffb272bd96.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 0x1dcef7c51ed86c8c33969a0e391ea3db79ea0eb97ab475fa9a1bcefad37011be. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SEPQM0612381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a6018dc83d549bf49344baecc0b4d94f9096c6917a28ead9d430549e18d485. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/SEPQM0612386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccadd04c6f2b259688971be31b28d074e124983b7c50334f8495e735977263ad. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0612398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59cc7443636f3031cf5a35326347b5636da4e0fbb638f0fc798d4b613a3bddd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQM0612401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3c9ce440d2ebd33c8844664b389028884d4a38a2cc36806a99b24b84ce6d01. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SEVFZ1111808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17676e33e9065e59243e592171e4eded2c2cf719a23b610a00ead5b2dfa78a75. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:21:53Z), 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/SEVFZ1111817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9d471433cf8f6d3d188babd3044c3e3e1ee8f75fe34018a4e46cb62c6919d2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEPQD7423071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa212883cd0d25503521f470484cd44126089b90baf563b458519aee52fdb9be. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SEPQD7423091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b56f4a325e4488243ed57fd596f48607e902f74dd5e1ae574c79c307fbfdc2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEPQD7423151.
Svenska Schlagerhits (New correct tracklist/audio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccadd04c6f2b259688971be31b28d074e124983b7c50334f8495e735977263ad. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEPQM0612398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccadd04c6f2b259688971be31b28d074e124983b7c50334f8495e735977263ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEPQM0612398.