Gianfranco Manfredi (26 November 1948 – 24 January 2025) was an Italian singer-songwriter, composer, author, screenwriter, actor and cartoonist. Life and career Born in Senigallia, Manfredi graduate
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 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 0x93ed749f17aa2a1689d5dbbb852225fd0887142528c93e6a840963b58bf6e73d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fba96312-5c9e-4ce6-b4d3-c8e06aa2fa76.json and https://artists.proofprofile.net/proofs/artist/fba96312-5c9e-4ce6-b4d3-c8e06aa2fa76.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 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 0x6bb861f399e4d6c1677f7202ab9c70763a87ee42901c496e5c4b68b5c9861bee. 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/ITUM71000500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0a5cfa4a67e5cb63da9342490464d6a194da4671955cca6c7d9de7a94acf32. 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/ITUM71000504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1282f3230a2a6339cadf4777a4aec5de32f32bac2e830e02061ce2488c384d. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/ITUM71000508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98b80d2262fb104d1c4cf47d657951a0e285a9c67a9f572f05d19017f566656. 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/ITB007700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfc2208ae2975bd4992d911402fb26710a2fcafb1a94cef361959572611f96d. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/ITB007700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e20a4d22111f266cd60a24b4786abe07d329b69404e4639d224789c1cbfd24b. 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/ITB007700206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6d957c300ab0b76dbf501aa7aa1d28bebdb372a1fd1bc9fe0f06b726c49fa3. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ITB007700207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33040b8aaec479d0951cb2eab683df26661b87444b225e46b2b7b4845412b7f7. 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/ITB007700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ebff1cacf93f39446b8075749c8c406333a9169238e7f8587b721b14451eaf. 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/ITB007700211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef71fa544cf828f0eb25d3cc3f9252befdfcaa1ebc049d29d70bf1e2af4f219d. 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/ITB007700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c05d64d59af9fd8ea235162491830c8126abb27fdcf6ea7b64e9bf1c035eed. 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/ITB007900594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0de76e1e454d8ca47ba7d558e5f01f1f6e8616239bf9c482861af0ed88cffd. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ITB007900587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435115014f1bba22002f353dd09d842b8aaa2dbc42e1fdc7d192a2d23a444d91. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITB007900595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc551dc0e49ec8a3f8208326f12d3bcb41937d477edfe75babd43519ca17f5b1c. 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/ITB007900590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c374f511402cce1419efa6956f5e19c8ab0f2099f9fc1716463a01ec8d8dc2. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ITB007900589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86885c8c7479e5a4803ba4e4283b4b311aa9cc6d7a25f45b26c405d3bc99f18d. 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/ITB007900593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdece0c2dcf7004495796d6415eb0ae28d3d786a42aac6206e79c6e0cbf2afc0f. 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/ITB007900591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e95f7d6579c94e9faf6d5dc986c30dca0b9188edd75b1731629fe1516e30dbf. 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/ITB007900592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb41f9a390e3d075be5a38728436a2316d2fae6fadb98fac8d4c0387d1ddbb50. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ITB007900588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c396a87c11be491ba3e6eb1f9469a581e4d448dde085f5de4cb9317984159b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/ITB008200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab510a4f51f92fe9f90a347f1ff701212d2dad5af805f67a421952e9136379ff. 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/ITB008200528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeee960161d0fdaaa2a511c9b739fcd82b76cecd6f1060b155b3287aa229df80. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ITWX41900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fad041e1b113b816d1ea03bae9c1fa1a8968d58156808f91a82b4bb804735c. 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/ITWX41800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c98749e405ea8f2e7079413d7cf6a161b0c383160a001826c39f8b9d105ef50. 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/ITWX41900004.
Venezia è una città bellissima (ma non ci vivrei mai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f309c2acd0498845b7b3e9ad594caadce0623148fc4a5f6d7bd8909f8527c8. 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/ITWX41900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9addfde80dc33c80f1ab3c71ee76be2e3a7c4c10a8fcb4dab8307b49ce270033. 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/ITWX41900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059e3cbc44d2d5277857b66408e0df5efabc3c8fb3d50969e1dff4624e579040. 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/ITWX41900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26f5a0563f794aeb0ce46f9c82a01d36b5d8080235b18a536039b7bd6a7c8d6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ITWX41900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0335115439070eae2e34e20e03847f8d9953f8896e47f9bf8d21c3bb336db850. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ITWX41900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12064bd4ba52d4b6a523ddaf7c64c9f266ccd3f97b4a030dd5fcd324477625b. 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/ITWX41900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ee3785c8ddad39d15bbcce68c5cdab92b4dffc6ac8d5b3d5460cbadc99cabe. 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/ITWX41900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547c2e2ef794f9f4f1e037ee3680062ba9f35382717c941bba85ef33f5558f03. 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/ITWX41900011.
I Cantautori Italiani - Gli Anni '70 - Vol.2/The Universal Music Collection (Remastered)