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 0x191e3b9df74fd037b070e3cc096b767d6fe3251c949957939717412dafbf009c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5310fbd-585b-4c27-8b1a-d03d47c86a73.json and https://artists.proofprofile.net/proofs/artist/a5310fbd-585b-4c27-8b1a-d03d47c86a73.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Verdi: Simon Boccanegra (1857 Version), N. 2 Prologo: Un amplesso... Che avvenne? (Simone, Paolo)
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 0xe9cafe7ead0d661922122130a5d3b55c53e4f71e51b9563f6c2e6c8080d05105. 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/GBQXY2500003.
Verdi: Simon Boccanegra (1857 Version), N. 2 Prologo: All'alba tutti qui verrete (Pietro, Chorus)'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69983cb4183f7e07b06ad538081f5bc6eff983fd4dd333ca90fd438fe1d7cc90. 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/GBQXY2500004.
Verdi: Simon Boccanegra (1857 Version), N. 4 Duetto: Vieni a mirar la cerula (Amelia, Gabriele)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef97d0519177a3d979825fcc091d512fab90a4131d45d3f9b8f427b60f8045a. 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/GBQXY2500014.
Verdi: Simon Boccanegra (1857 Version), N. 5 Duetto: Propizio ei giunge! (Gabriele, Fiesco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d4bf6d3d4d9c0fe5fa0c143e9d19d397ada013944adbcef424246abc8d9546. 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/GBQXY2500017.
Verdi: Simon Boccanegra (1857 Version), N. 6 Duetto: Il nuovo dì festivo (Doge, Paolo, Amelia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6201b00ba906b699bef0a55d549315ebf48f6120866d43de3412e0d9f8e186d5. 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/GBQXY2500018.
Verdi: Simon Boccanegra (1857 Version), N. 6 Duetto: Orfanella il tetto umile (Amelia, Doge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753fe90e33a4bfb666369a454912bb928974d5c4a364c98839a6c19798dd0ee8. 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/GBQXY2500019.
Verdi: Simon Boccanegra (1857 Version), N. 6 Duetto: Che rispose? (Paolo, Doge, Pietro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c5c8e3aee7366ae02050f13d13d58ef2ab816be4cca7ab4dbc11dab3105885. 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/GBQXY2500020.
Verdi: Simon Boccanegra (1857 Version), Preludio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033cc293ef9ae08e6315d05ca4d0dbd18c1162632e122fc9fbb50da01e09d419. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBQXY2500001.
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
Verdi: Simon Boccanegra (1857 Version), N. 2 Prologo: Che dicesti? (Paolo, Pietro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb3f6c1f00dd6b969262ce7074083adf9830e64a11c8add767302285cc3bbd. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBQXY2500002.
Verdi: Simon Boccanegra (1857 Version), N. 2 Prologo: L'atra magion vedete? (Paolo, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a44ced54dbad839b7e4b2b94eb89fc0939d20cc73ece6b10a4f70f3de8dcd2f. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GBQXY2500005.
Verdi: Simon Boccanegra (1857 Version), N. 2 Prologo: A te l'estremo addio... Il lacerato spirito (Fiesco, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5ca4262851e2f364488586571eb40ad7669737b291b855624c64094a284b89. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBQXY2500006.
Verdi: Simon Boccanegra (1857 Version), N. 2 Prologo: Suona ogni labbro il mio nome (Simone, Fiesco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64070b78cab34037d4a0423b730ddc1bcf4f541beab17f6221043fd925c8209b. 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/GBQXY2500007.
Verdi: Simon Boccanegra (1857 Version), N. 2 Prologo: Del mar sul lido (Simone, Fiesco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0795859f75104ddb04a61a17e8734931397bfe5d46e46cf89fe4c9408031ca1a. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/GBQXY2500008.
Verdi: Simon Boccanegra (1857 Version), N. 2 Prologo: Oh, de' Fieschi implacata (Simone, Fiesco, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe999bb7623b1033efdf6b75829fdf8a8ab52c33d7b226a2067a7a9daf0d0dd3e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBQXY2500009.
Verdi: Simon Boccanegra (1857 Version), N. 2 Prologo: Doge il popol t'acclama! (Paolo, Pietro, Simone, Fiesco, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa99e27de2c6e2a9057822c87d9b31ce99b834c2de559919a8eee114cd22aeef. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBQXY2500010.
Verdi: Simon Boccanegra (1857 Version), N. 3 Cavatina: Come in quest'ora bruna (Amelia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0fd3722ea29ef7a7241950e86149ceb33441c22640c00808af43638f86e097. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBQXY2500011.
Verdi: Simon Boccanegra (1857 Version), N. 3 Cavatina: Spuntò il giorno! (Amelia, Gabriele)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe166103d7a25dbac03a46bca9be457df9ebf7165a14044e994226a9d73ed4106. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBQXY2500012.
Verdi: Simon Boccanegra (1857 Version), N. 4 Duetto: Ti veggo alfin! (Amelia, Gabriele)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec38a363db4459ffb63dbee3c449537affb68d7d8e4b886eba93d428c8cf13. 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/GBQXY2500013.
Verdi: Simon Boccanegra (1857 Version), N. 4 Duetto: Ah... Che fia?... Vedi là quell'uom? (Amelia, Gabriele, Ancella, Pietro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c30359e00513384313f13771562cc6314cfff9c5ac54d21c70cdbead0038c61. 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/GBQXY2500015.
Verdi: Simon Boccanegra (1857 Version), N. 4 Duetto: Sì, sì dell'ara il giubilo (Amelia, Gabriele)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ef6c00c63e0edbc742f9344d3111e7cf405c14eeda9e7eced85f28403e5f37. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBQXY2500016.