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 0x44bc8e3a3096fdda04831efd6de690b2a744f901bc63964118714416689868e9. 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/aa60be66-339f-46e9-9737-9b6f9cb204e7.json and https://artists.proofprofile.net/proofs/artist/aa60be66-339f-46e9-9737-9b6f9cb204e7.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 0xc90c6d23b6f00132ca4ad4e76cbfb19e2a3c58cf6af4f3e257e9169cec6d4482. 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/ITDF62377044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7a76e18a4badb8412d06d70c9b4f92bc7f28f245e465e93d0e76fac31d469d. 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/ITDF62377049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138dcf8fca54bd18781db365e8b9e193dfb2594945184806bf0b5e165a97b70d. 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/ITUM72100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138dcf8fca54bd18781db365e8b9e193dfb2594945184806bf0b5e165a97b70d. 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/ITUM72100098.
MARMOCCHIO (feat. Papa V, Jake La Furia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec5a501d9d5e1aa56c9c74af8035dbd7c582d99a94a146231cf13352b6c1e45. 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/IT4U12400025.
LE BAMBINE FANNO OH (feat. Nerissima Serpe, ANNA, Papa V, Artie 5ive)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5765be1c2e57e12eca6d738ab2c5ed528ef31e7dc33b32e88be380e6d9ba975b. 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/IT4U12300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ceac947944c5bd095a2f18df5905071d69b7684c7ce30bf8e7f1ec0866092e. 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/ITUM72400062.
Nun M Piac RMX - feat. Guè, Sacky, Side Baby, Papa V
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaef908a70d8e8a8e56294595276ace08fef7760cebb138a7b0a1fd2297624a8. 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/ITNIE2400014.
Tessera sanitaria (feat. Nerissima Serpe & Papa V)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57083b597924a56a0aa94322df3c0321cef86ddf27aac781e066c1582297887. 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/ITUM72401166.
Walzer (feat. Papa V, Nerissima Serpe & Fabri Fibra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12273a75a23d0457de03e942065633d2531a2c3289cd72db132209d5b5ce814e. 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/ITUM72401004.
True story (feat. Noyz Narcos, Papa V & Artie 5ive)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49fe0ded2d936457bd4a98344821ac30e016521491350ea332b7f9ed8f8cd03. 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/ITUM72400998.
CNTNRS (feat. Jake La Furia, Emis Killa, Kid Yugi, Tony Boy, Rasty Kilo, Guè, Paky, Nerissima Serpe & Papa V)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ef97a9004404469e362f38d05610d0a9a11e2c02a150487d309c597242e5bd. 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/ITUM72401000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6571837bf1c0534be3fd169c7e1aba48120d553706cf048ee21a091193843e97. 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/ITM382400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289069cb2cec3b29e876ff32e39643abb7a18e8c9ac8b55594eade25b8ad2a55. 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/ITM382400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc32279e96dc6c9a40c3e27d3bc5dd0db7c5c4c9aa7c35ea1f8b032dcab3250. 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/ITM382400027.
Mattone (feat. Kuremino, Nerissima Serpe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3477db4e78deb9cf83665587dc2f6363e4348b5f57bd72234ea5feaa910aa7. 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/ITM382400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54cb43527f98bad91307c79fcd1167a549eef989e4e3a90f63c52d7070944cd. 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/ITM382400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda23242d5b939a73416ea6902c0bcdf830ae258dd30edd04b8d0be893a7c7053. 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/ITM382400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc090b39983d24df2398bb518ffc2cb0879af1b9fb2507ce6046417f2520710f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITM382400077.