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 0x08e5b00744dcd1f575ae48eb8f60f4b146d72ebc94e148d906d23818f045cccc. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1e119a8-32ae-4f98-a30c-bc13ce4b1524.json and https://artists.proofprofile.net/proofs/artist/f1e119a8-32ae-4f98-a30c-bc13ce4b1524.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Night Driving? Opera will keep you Awake!
The Magic Flute, K. 620: The Magic Flute, K. 620: Overture
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 0xa5ee5bc1114ab5071f0666b89672d53086e3a1287ecb8e99662d0b1cb63aee16. 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/USGZ21457283.
Introduction to Operetta with Franz Lehár
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6849701e9f1935c346ea239731dd68e1fb1bf3247740d647a1cf557b91b1f92. 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/GBJUT0800478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6646fd882d28a315b07d2fb3e0ac81aff024a0f145f0763ab16d649fd89b494e. 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/GBJUT0800479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cca27c41647df9669a613d6b665cd03fa29b6a7a7e30f15f9c882f9c1c3104c. 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/GBJUT0800480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca45484cefa10173c8cdc7132b38d7ead89c23f98c83a12a54854607b84da1c. 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/GBJUT0800482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420e7d328fe1d02b3f1cdcd0c7791c55ade959d881464850f630927f2e78f5e9. 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/GBJUT0800484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7062ba679e7ea094dabb3e07d148001a004d400381f635e4f17432ee6a3a778. 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/GBJUT0800485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e6aa6e84e45f68e0ffc2010ee1592b0a5bcd78a3d9ab3a82b2304e4dc9dc90. 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/GBJUT0800488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603b732f2d1547f6dcbc52744e8489d76e636e04a04f73b4de975514c6758b4e. 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/GBJUT0800492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1865d27dfb422244a571a09450c4e98e301d858bb318215d9a2b1803194c4e79. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBJUT0800477.
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 0x76cf3337084e744f663c2167e592762ec34f43a4dcc81a7e944b196a29cff0e1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBJUT0800481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0716ec703772f985855d7ab74f7d6d7a7a1ad59fab381faa87cc25c354326c65. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBJUT0800487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5366e01bd40da0732d2d8b4132c88052f0e2e7d60c3a08d82c7a73cbb53a38. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBJUT0800490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb60eaefc0ed5c54626ca68e92572d3a093ae15b2ef77f7d93afde5ba147a52. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBJUT0800491.
The Music of Lennon and McCartney, Vol 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6450401b25eadad6276afb147f7995b4dc8054f6e3ffaa53e28f2d1618cd460. 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/GBJUT0800346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc150e523be32621364a8ed7bfe45bb432defe110dff681ae6d2e18d40e59f1f9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBJUT0800351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c59fe184557ead938f18cc25daa01cfb80e4f140f9bf878a8652d23aca7c448. 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/GBJUT0800439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a1e6ecc2cc0e1660bcde25251769c010cade01bf54ff98371e9bef39e943de. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBJUT0800442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c22356557c793cb67d3835010c4f7c244c04744bd27be357ae919bb2b0a524. 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/FR9W12300585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54404a9a27e4ba5017bdab30e823a5ce27d863d539d2549eff79cc755334871. 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/QZES92159153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d813f8e6276563160785a3d7ad7707782fb91aff1f6ad32e0b46da966b9493. 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/QZDA82183118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507c84827fdbe82357776e87d09f5e0f9a6d11a313b0e4da7fc02953a2592ac2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JMD501400020.