thumb|right|Roland Romanelli Roland Romanelli (born 1946 in Algiers) is a French accordionist, keyboardist, composer, and arranger. He became well known as the accordionist for the singer Barbara from
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 0x19844c6621059370ca527fc0254ca5982f94d386dc85ce608a6a609bcf727263. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a273a5f4-3b84-4e0f-8ec6-d261cc9d8cc9.json and https://artists.proofprofile.net/proofs/artist/a273a5f4-3b84-4e0f-8ec6-d261cc9d8cc9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Voyous Voyelles (Bande Originale du Film)
Barbara / Arr Tharaud: Pierre (Arr. Tharaud for Piano, Keyboards, Accordion & Cello)
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 0x35f81c7132ec54549eb3d92b7a1412a030801775d0e3a43a45356649204c3516. 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/GBAYC1702466.
Barbara / Arr Tharaud: Mes hommes (Arr. Tharaud for Piano, Double Bass & Accordion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f5a31769a1b3e24c69d6b60f658b9cdd0e5ae534256044ed72766f5ebb8308. 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/GBAYC1702462.
Barbara / Arr Tharaud: Le Bel âge (Arr. Tharaud for Accordion & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257196b45991fc9ca20172fa627b9dbe14239485cf7cf384ea7743d0f7bbabe2. 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/GBAYC1702480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14305ed919c38521032636b6d67bd729772c00bbc20379824a1a42618cdc6ff7. 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/FRR061600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5451aa8b13af1ed346c5078761ed772db5850cc266d5f1f35c8bd23b109eea82. 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/FRUM71700851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5c57b363ae636d68d42aa9aaa02a2d9fabea57c651b0f2383a0ff8cc30825f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRUM71700855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e9ec824f5484583239f117b1484f216ed2df0e3c73242eca1661e15f5f0182. 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/FRUM71700858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe62ffa33354f45536e0d3a820c5aac4cbd2ddb42681f38cfa2735a60f66108. 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/FRUM71700859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd6e5322ae263a0619bbdbc0aa6f1806491e0ea4bba50b8f0dda5e190de199b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:56:07Z), 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/FRUM71700737.
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
Barbara / Arr Romanelli & Portal: Nantes (Arr. Romanelli & Portal for Clarinet & Accordion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1c74b1f700bb0369f9739d1370b52c374bd128971836181c59c06372f4fcf5. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBAYC1702479.
Barbara / Arr Tharaud: Vienne (Arr. Tharaud for Violin & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a51ef789a53bfb8f0e5a6b16e9bec836d64bf9c08233ace9bdd35bd2d6880e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBAYC1702471.
Barbara / Arr Romanelli: Rémusat (Arr. Romanelli for Accordion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b23b65f3225a8a66af9389ff8ef3531de6438d4a7895aecec153669d99100a. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBAYC1702482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e88494bf2e77dd29c1d7650ad9d6aaab10624dd1226f9df8488017bb781b79. 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/FRR061600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ade73850de79cffc15e2cc0ee8850c5ed2377c7d483b28378d354e73f83342. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FRUM71700849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922418d409560ee03e66799339db84a98cc4e7ebb8bba4549647904e10cc243e. 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/FRUM71700852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aeb0d7346d83ae91f3b6e1b70c5f3e7277b7f6d3637d3191934e867cca965a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRUM71700854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2d5a63ba8f61b191377e63743767065de06f4cd5a8eb8e8024cf256d0e970f. 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/FRUM71700738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa31868b460bd04b5342163bfd676b2517b71556fcaf3fcc5f362072cfb9fdc5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FRUM71700857.