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 0xa28c2dbd3913a44cb692d8710a7708c6f1a0e13f8078a828f774258c1d9f96c6. 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/6336aa1c-7975-4991-9f75-ea6a32bc6cf5.json and https://artists.proofprofile.net/proofs/artist/6336aa1c-7975-4991-9f75-ea6a32bc6cf5.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 0x34ed58236d235aeeeda1239fcad2013efd3990db86ccbcdd80478867e75f86ce. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V82605505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a5e07efd36f0102f36c4d84af5d8b2955007957c5e8e2b7f94f23623224f7d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR6V81210666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e6e8319d1eb84bce25f5302314e79cf346640ef4e1237e3887915199e5fe18. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR6V81210670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b01cad584d55c9389f14c953540505cf326b28cc76d4ad76bac2fa0b2195228. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR6V81210674.
La patata... (Molto più...di un semplice contorno.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ee5dbd537eb4c8d46d73897f882a53b710121e377e87241d79a50716f1c39a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR6V80190562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266667e924b1f6f8a21425918af4050b45435094a415b2004e04877ceb646c9b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR6V80190564.
'O ballo d''o cavallo (Versione originale inserita nel film ''Benvenuti al Sud'')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ef0703675ee9e59c04a490875b9e4f96dd94637c1d1a85f80ee61fcfaec0d1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR6V81724255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc0d206fbfd442514fe906ecc9b8cce622aec4078abd3cd4fb5792607a3ee26. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V81724263.
L'acqua è poca, la papera non galleggia (Politici, ministri e deputati)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd4e8924574079da7f41157225372055ce89d938a65ffc0b8f5a9a9eeb63696. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR2X41536108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbdaa72dbdff641202455b185b4a2ae0057a077564f8894a29f6115543d06eb. 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/IT8TZ1777602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b17266df9975ff762a14b270e37f8c8dc1a3355749953791a616fdd7e234d00. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/IT8TZ1777601.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316a1ae8f45c2857b3cf6191091a531c95c0b2770e1411d4cd7819a91159343e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IT8TZ1880801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559a91a81ea272579dd3fe5a63527cf63a4cc17bb60951e13ec0f79ec50ffdb7. 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/IT8TZ1880802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae09f9b0c805664a607f90a63cc0381023464a4f2c1f5e90a8d92b8aef7edcd9. 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/IT8TZ1880803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde245ab74f49ff292acaef5e7997efb998ba31f29b1b3b16d7e3590a116cd7c0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/IT8TZ1880813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d802c388ac2b02b8f6cc687e56eb1bc241c8826d572796ad11063970d696d53. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR59R2319661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a476f4e79aaca60679d3d5e1ac9ff250bbe375ec44266fa994add94cb8e9c7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTBD2551601.