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 0x68213ed84abc17050e9ba52272180b5d098338b2a6e7be2a2a15acfa601b4f86. 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/a9a8a16d-4e51-49cb-84d8-9f71bb2ced18.json and https://artists.proofprofile.net/proofs/artist/a9a8a16d-4e51-49cb-84d8-9f71bb2ced18.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 0x2d1c1841d85dfdf38e38f50346a834f31427585642c8b2ef2c787445dbe7b47a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ATT250602160.
Erinnerung an Zirkus Renz - Solo für Xylophon und Blasorchester
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5d4613b54f753d206e46d05ea2bd05a13306c6442329660e24524e6390a23a. 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/ATT250602170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa317316716e224dc49c94ae1fb63816c23fa0ead87cbb3d6f472aaccf4b85a29. 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/ATT250602180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3c2d7213d035da794585b4c2e9d7b7f22179db7e69c0ec2e9b3591213addd0. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ATT250602200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9cfeef462120a7a9e053a365224c5a108b6722101cd20aa18143bfeecda921. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ATT250602230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c4440cb73a61ef70c8318828363cff6643656784184458614c4be3be0218e5. 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/ATT250602260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283b1aebe393ef4763bef54bb37c361542e1c1287200473741d6086d61fe1775. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ATT250803300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb14f98ff77711b1a7343f4a363bb184b41e3cf9ada726eba5753bb6949c8e7. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/ATT250803330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985a183c6f410c884e81e7c0b5aca33d7c328e401a127b2be2cbeac18e682758. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/ATT250803340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efcca759e0c959bcf53fbb7e2c8c264961525129370ad0a67f0cb110fc2d6bd. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ATT250803380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fd627898ce210c9d45c17e2ee66fc79ddd88c749469289a9a2ebf603a4db21. 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/ATT250216240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31997ee87d0b4ddfbac0e59a72dfe39286bcab139e06da14736f539dd644eaa5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ATT250216260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc45f34bb5d569252396d28c3d17b0c10c3c8e44cacbd09a3c6e3a878a03f52. 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/ATT250216270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c839cff81926d1a80cccfebf2817b0e4d68c7a18940183cfc377f9b1dd12cb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATT250216280.
Musikalische Grüße der Musikkapelle Wallgau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9389924c4bf54ee8a00c92dc713a10e6a8df6d154e110da99a0c21b226d44dec. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/ATT251238950.
Marschmusik mit der Musikkapelle Wallgau - Folge 2 - Instrumental
Böhmischer Traum (große Blasmusik-Besetzung)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74048c73cbaef15bf4ec94b0d29e567509dd9255d657165a1284084af7ff560. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ATT250216230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e04a227f83f5eae05f75e234d6fcb22dc333193fda71949d8fe5975d0005417. 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/ATT250711080.
Das große Blasmusiktreffen - Instrumental - 40 Superhits der Blasmusik
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e9971f31cd26dcdca3127e663e7695482fd23832eeefcc4e1b45c67f35b78b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ATT251238840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e50db0bcfb61d90b51d7f863faba3b6d199e01990410993f509defb1fc14ac1. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ATT250612640.