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 0xb4a2295f2490b949240936418a61b3a8a2390c96dd1b8e19e5c15a33d714dbd5. 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/2cf80714-b366-4bd6-b59f-b903eb061ffb.json and https://artists.proofprofile.net/proofs/artist/2cf80714-b366-4bd6-b59f-b903eb061ffb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orchestra del Maggio Musicale Fiorentino
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 0xf390ff8459a29b27e639465293835cf0b3a36d9842302809a0cf3379541b148a. 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/ITZ041600019.
Aida / Act 2: "Chi mai fra gl'inni e i plausi"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d94677c4e4b5bb9c0db826226b039e8249f70e38bf2985253ff9488e71b8104. 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/ITZ041600024.
Aida / Act 2: "Fu la sorte dell'armi a'tuoi funesta"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a6de01b214a676e848f72323240715909fe5c3faa4c21bc4f47d9745b2d2ba. 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/ITZ041600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbe291e08f4b4ae4684b9861bf0147ee8e1bb5a0f55a7f14960f10685e02abf. 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/ITZ041600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6147b263db06b66789f5eb67fe1d24e7c55cad20f402704e991a9462d08757c. 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/ITZ041600036.
Aida / Act 3: "Fuggiam gli ardori inospiti"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3d106502077601f9471a786c6f6ac63e3febab40fadf4bd7a5ffc6c94c3527. 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/ITZ041600040.
Aida / Act 4: "L'aborrita rivale a me sfuggia"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0372c7beba07abedac9d40b5fee9c48bcd66481c9d0f7fe75516a364cef84eb7. 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/ITZ041600042.
Aida / Act 4: "O terra, addio; addio valle di pianti"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded555e79dc4ea8281ce63d12d249dae257ff5138c6ff2fbaa04a332a2ddfb19. 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/ITZ041600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34adc2810e5718845ce2ae4a5342652c45d3452ce764a7d4ecd1a757daa945c6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLLH1018401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1263161058f4fcf2062d4f00cb2cbe7aad1a38d8305b2830a470be9f46afb821. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLLH1018402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0e301636f085241917fd5499a78521e732f15376a4fd69bb8fe47c3051b475. 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/GBLLH1018403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82579e0b2ac34d19943754a2a3e68c10da790d46d72ba3840268a17819690ef4. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ITZ041600020.
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
Aida / Act 2: "Su! del Nilo al sacro lido"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993171d030625b15e2f674fb57056e7e57412636673cebb6913bdfcf4d1283d9. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/ITZ041600026.
Aida / Act 2: "Salvator della patria, io ti saluto"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027286c74de99d92f1b2e1572c9f6dbc2e0127419bbea4a52ca952ce132554d1. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ITZ041600030.
Aida / Act 2: "Che veggo!...Egli?...Mio padre!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccba609c3cf2fc90f4021547f579c528138369788d231dd8c7a1112899ddcdd. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ITZ041600031.
Aida / Act 2: "Ma tu, Re, tu signore possente"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e63e4d3d4448a18e12e33f23e7e1c8062739b7832230da215a6b38b504c448. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ITZ041600033.
Aida / Act 2: "Gloria all'Egitto, ad Iside"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cf717564a7c2c7f45a1a72d290cddb2c8d8fa7d0428474f61489dc6147e360. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITZ041600035.
Aida / Act 4: "Già i Sacerdoti adunansi"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d84980fdc2e9ea9a5837776d46efbcf15f0cdd8434fc2c93e6b0fb13928e032. 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/ITZ041600043.
Aida / Act 4: "Ohimè!...morir mi sento! Oh! chi lo salva?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29993032b9d0b2fa649460932f57922f178ca86c346b3b42c15e00728700ff05. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/ITZ041600044.
Aida / Act 4: "Radamès! Radamès! Radamès!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70baf4a30b05ef609e688c0c90d5a14151f7d30310b49ab4e409a8a53213c67e. 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/ITZ041600045.