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 0xdc119476ae88168416e7a0e187022aa862cb1f89f7355b394bc676f45302465a. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c37f7806-29f0-44bd-8dba-7463653098f1.json and https://artists.proofprofile.net/proofs/artist/c37f7806-29f0-44bd-8dba-7463653098f1.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 0xaf93e2315e17d5abf48141eef3b9018a1ea1c914f54d285a8a7e56097d4dffa5. 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/DEN960533207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcfaeae0de9ef1733e5aa564fb773132bb43244938f118b1e1fa9c2d11b10b9. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/DEN960431902.
Rodelinda / Act 2: De' miei scherni per far le vendette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a87d9c54cc9bd2dd840603302d2194b122c161c362ea5af6406dfc2525dd85. 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/DEN960431926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0db4193ad18e96f1ad5c40259b6951b840f01599b968a07cd4dc0b3b52b198. 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/DEN960431945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2c6525910a2fdac681250b2b4dd2a7a65e6741cb822fcfc103ce32d61f6d89. 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/DEN960431904.
Rodelinda / Act 3: Quanto più fiera tempesta freme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7d1ac27769611814b77e8b406782dfe6a8143b9c7cd554f6510df8a0d8453c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEN960431947.
Rodelinda / Act 1: L'empio rigor del fato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1d335bb933cc55554b2b54fba82377d833c666f2bcb42fe0f798e97be158f1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEN960431905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c56c7fdf153c1991daabefb98d550e45e7a10b99ec698619d7a574324f2d65. 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/DEN960431929.
Rodelinda / Act 1: Sinfonia ed Accompagnato. Pompe vane di morte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f066481a32cd1a6911b26a86406d91478bf87fa70952d45aef5494b3e02c2b. 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/DEN960431912.
Rodelinda / Act 1: Ombre, piante, urne funeste!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979c30ec72ec7ba94245cfd46812505293df51171655931a1b688f823bbacc6a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEN960431915.
Rodelinda, HWV 34 / Act 2: Ritorna, oh caro e dolce mio tesoro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0d263bdea73d16ec98069e38ea893c206f1689bf4d7b872f1da864d1f1faa6. 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/DEN960431939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368e4f5986434b4bb27dd4e3e4977c4b1b660952156a69d3841f004f3e9181c3. 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/DEN960431917.
Rodelinda / Act 2: Non ti bastò, consorte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52151dbafe0bb369c05db945382e2b8734db53db05e3234f789809c96be5840b. 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/DEN960431942.
Rodelinda / Act 1: E ben, Duca, poss'io all'ardor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb3704a97ef35c88ea9e27d4a4dde524cdb7493a5c52e57eab624ee0e72226d. 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/DEN960431919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9665d7169646b78951f4296163b57d378c107c674c95ed8a816763bf6dfde7. 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/DEN960431943.
Rodelinda / Act 1: Se per te giungo a godere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaf91009a8447173ddb0b769d202db182231aed1e6fa2bec02971f349d0a661. 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/DEN960431920.
Rodelinda / Act 1: Confusa si miri l'infida consorte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1eb0cf2f349f91f3ac4f34d55e5ac7186d20e5b7d25fde7b3133837c70340b. 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/DEN960431924.
Rodelinda / Act 3: Chi di voi fu più infedele
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6fd47025e5a0a9df0d25caefea93905bb2c376c477bbfe6c21ce823f1a6969. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEN960431950.
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 0xb2a06438aba455223b4cb2c75c8f4275d345676c2308c566fae0273078b9e748. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEN960431935.
Rodelinda / Act 2: Ah no, che non m'inganna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aa7a5fe1b35b5fddcbc61dd4e3f0c2ae64f0e51ffc85f35e87eabd5e76936f. 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/DEN960431936.
Rodelinda / Act 1: Dove sei, amato bene?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3536ad60ef8c3b47515457fd93e89b65ff381ef5e2b409e55caaa1e2966ed140. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEN960431913.
Rodelinda / Act 2: Scacciata dal suo nido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfdab860c119641e4af0645076ea4d9e99983d189108ef0de3e00d4861f86e1. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEN960431937.
Rodelinda / Act 1: Ma giunge Unulfo, oh Dio!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eb0cec96942116a4f5f201e88bc123b4a88c4109133e9b557635d9afeb3f07. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEN960431914.
Rodelinda / Act 1: Ombra del mio bel sol
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88eea94ebd59cbe654665d2c2f71e332dbc843a1c1b8fedf0c07ee09a548180. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DEN960431916.
Rodelinda / Act 2: Ah, sì! ecco lo sposo!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8443277e55e92ffe2640589fe214646307f779bb9ce8d0daba65b9fe356d3a5. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEN960431940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dae71519b160584119e375fb782db555cf2cde01aa76e241e737a5dac0db10. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/DEN960431921.