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 0x431fcddec7a91c5f1051d638da3a96c77a66cc1c369b0140ee3e1aecd8d8b6c3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/180c4cdc-bce5-4122-8d98-24d76f12bdc9.json and https://artists.proofprofile.net/proofs/artist/180c4cdc-bce5-4122-8d98-24d76f12bdc9.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 0xc16df165fdbb23bf31737f9e513ba7ed18d385ce03119b03e7df0fceab96991f. 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/GBPFW1100630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a259c40a7da9511305e7edddc8e15dd5d43bcee3d5dbd1960dcbb53cf7acef1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBPFW1100638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bad4b0e3914fb8f7d89f6800a1004d6c6051e85fc72ca942fbe1b43b2b0d05a. 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/GBPFW1100633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fbdee84693368b3b0212a29f40e3d3d1a676c4ed7cb4e193f1f322006c944e. 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/GBPFW1100645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3732c282c1502f9678a2bbad045ce3505212f0a549bf165e47d3ec8e2b46f16b. 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/GBPFW2100140.
La embarazada del viento (Gaita Margariteña)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d97cb3b412c211371380d09263c6200cea5519755383a30bcd260a89d10064. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBPFW1100635.
Caresana / Arr. Pluhar: Serenata: La Pastorale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25d2dcf605b4cfa16036ddc13d0c84dec07243f5963786691c86467b22a1010. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBPFW2100152.
Caresana / Arr. Pluhar: La Veglia: Una dama, la più fortunata - Ballo detto la Barerra - Non è vero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab0d68c9cb9c27803a1c8561e54ef826eedc9623ac2fba91ad6c38efb516628. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBPFW2100146.
Il Ballo degli reali Amanti: 37. O che nuovo miracolo a 5, a 3 "La Pellegrina"
Stravaganza d'Amore! The Birth of Opera at the Medici Court
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d96a99ae9c7f4dce02ac3cc6f997e2a669dc9511aaab316565f7253661acae. 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/FR7JM1663370.
La Favolla d'Apollo: 18. Piangete, Ninfe "La Dafne"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785ddfa6231f59712dec1a01f353488626a5e16aa3e5ade97249250695939dd4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR7JM1662180.
Caresana / Arr. Pluhar: La Veglia: Gioca al ombre il mio bel sole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfc1a8c837c81daa0fec9f7e46645fdf7c09c540122327ad34f78fbcbf6aac2. 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/GBPFW2100150.
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
La Favolla d'Apollo: 21. Bella ninfa fuggitiva a 5 "La Dafne"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaec5eeff86d0be4d5c1da90bd0ef0cce7e97fb8a110b7e28eb0fa812d19adda. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR7JM1662210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2355dc7a32d8db8e95c11520196acb718a7ce10aa6306ae339e872d70b55b8c. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBPFW2100145.
Caresana / Arr. Pluhar: La Veglia: Basti, sospenda il ballo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ecc8c2f2cb0f8b0f15ab85a045459408044706a6f3a292298daa13b5df60d0. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBPFW2100147.
Le Lagrime d'Orfeo: 24. Lassa, che di spavento "Euridice"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37aee0643db3bdc09fb67e5811c2f6c0fd494dac41305b7cc4cc6e390ecec4dd. 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/FR7JM1663240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c26907bed6df3f5c61f87af6669865f0fdbe5abce998a169fcb6126ef23af. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBLLH1957404.