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 0x1a1e7773d1fd8d3b4e1b47d3e03a597615c17e3594a3d60ba5791f73afda6a03. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb220ccc-7fbf-43d3-bd8e-d4bb9b3ae8ef.json and https://artists.proofprofile.net/proofs/artist/fb220ccc-7fbf-43d3-bd8e-d4bb9b3ae8ef.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Who Is Playing the Bells (Original Club Mix)
Jane Fonda Is Playing in My House (Original Club Mix)
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 0x4eb2affb170c96d82fc00d451dd022825baa246d329b2fbc524aa21480678ffc. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/DECL81700375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4ef25b1fc072c9d8d4ab5d51aa4cbdcfd7ff28a4964b116ef97eb3f6b8db09. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBKQU1882959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4efd70a23384e0eac1b907f408e3b0921adf385caee86c28a4655d37353fc7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:43:55Z), 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/GBUR61700352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29fe6f29d69d8fbf337b15618978c63dc9bd7d112bea772d87a77a3bf4d0e73. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GBUR62000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d8b880683146e101c0f3f237edf632ae07a951e4590706e246cf1fa07845f1. 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/GBUR62000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a377167c43c51b16c4a23978baaec47b1f1607209b8f3446c296cd7ad958edc. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:44:54Z), 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/GBUR62000361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4140608c80d65a8e4f63015c0dd99fdc8c0fe5af9e0d25e73acef3d4a81b59. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/GBUR62000482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da279b61e0780782a43b07e3aab27b3e76d81cae7042eb3f1019f81d4b20890. 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/ITB842400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4560f658e80c42287621c1d40a3990d6eae07cdebc49871a843ca6b27d3664d1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:45Z), 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/ITB842500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a20cc5edf40a8b77940f6b4f6ed405b962e237626de134d4b5a56d5a089cbe7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUR61900121.
Deeper Sessions (Mixed by Tube & Berger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cf68fec98361280c6ee0f5418a440913729fe57371abcc9b67ccc80a7abb9f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLF711405497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c8b355a291c5adbe0e314fc981cd3767724ad0d448549323d96a7ed61b1096. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES84B1310205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccdebd8f59b4efd953986f0ea5975b4c7759f43295bc1fcbe51d73d5c9913fa. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DECL81400136.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f737ee70180143dd6bf6dc646d11b7d67cdc0fbb2c91dcf42ef722409facb4c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBHAD1901535.