Sergio Endrigo (; 15 June 1933 – 7 September 2005) was an Italian singer-songwriter. Born in Pola, Istria in Italy (now Pula, Croatia), he has been often compared—for style and nature—to authors of t
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 0xf725ba36647e4953a7f07922fe25e487d115319a29d990979503fb07270bb35c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ad9e023-97f7-42d2-83ec-e56f827725d5.json and https://artists.proofprofile.net/proofs/artist/6ad9e023-97f7-42d2-83ec-e56f827725d5.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 0x9fc1dda26d541c129cd98eae48b411b1ac3a73c6d04ef073bd44049ed5059964. 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/ES5832400056.
Concerto (Live at RSI, 18 Febbraio 1981 - 23 Gennaio 1980)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ea14cc34fbf77442eccd694b1332e8c72915daa5cfa5afa86c38c938a3835. 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/CH8291500346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddc7ad28af574678656a1791011e348c6aa2f3b845f271f72d4fd419fcb4595. 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/ITD016500864.
Samba delle benedizioni (Samba de bençao)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aac69e7e3d8d29a0b862f4982ef3312e56944f33ad7b3ed7f4a34ca808f9417. 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/ITD016903178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd66e48a07f1dbb0aa9d643c42c94fd2b73343f0b92e23bd6a87b641a4f3d241. 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/ITD016803532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cfb1f48c82cef99c65ca63e1ba17804a4f828ac6e5bd287bc4dac2b1c94919. 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/ITD016903199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a1e48aa63f6c01ccc0a9d1b434973bb73e72693139bb9c06ef06fba72bf145. 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/ITD017301982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dafc064cbeab2a54082f2b26b2177238f5b23ae86adbfc83d943b8aa699206. 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/ITB006380166.
Collection: Sergio Endrigo [E noi amiamoci & Mari del Sud] (2LP in 1CD)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4604b6d9af5eb7bbd458176e07467925aaa24a5ce2dcc3b25f2c0f02c4fc46. 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/ITD016903182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1ea602852c0d2990f94d27566d95cea7762c9afabf50fd7a9776a432177d67. 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/ITD016903188.
CJANTANT ENDRIGO - CANTANDO ENDRIGO IN LINGUA FRIULANA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183271433b5bf7bdd183d6941f28538cad1dec2db6e64f39f1e0809b17e7c39f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:02Z), 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/ITD560200319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7945d90e6c8fd86bc07d9a6342b90d85c15febf2ddf0b825208cf4ef5b84c8f1. 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/ITD560200323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ccea2a3e12b4eec956d064f33635a273f68bbb1811794b49613d845adf879b. 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/ITA619713054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf795afe832478525611a9ac393c9543bd7295a418fb60b1d9da5e35e382050. 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/ITB007570519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bfbee19174b328b3467726cfe3af0baac626c3d14e98f4cb1897242b8c87d7. 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/ITB007570525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f919d9bbe4398568e8c8dc7d82ee91078e6f50304be8379bd969f3ef057eb03. 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/ITB007570526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e99974d989146b76bf4d21203d2e46182ec04ab910b511dc886578936d08cb. 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/ITB007470533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4729488d0aff997d6146d4fd545f067fa6f97bbbe9f00dba174aa42c5b055db. 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/ITB007470534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f6f45a6646abdf4291740edf2a833745c909be9b0ad2d600f3eda6ebd19495. 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/ITB007470535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02af3b77ec546f39ceda254e4e4a8936ca15f9b048ae0fb344329a317e90f80. 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/ITB007470536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0b06cebd91220dcd088bdcf8d44b2a2709b89fd5fea70c7592aac9d9e6eb1b. 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/ITB007470537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc404aa434a3c2747c3a27cee4df8a6eee0311c496bbcf1da9109fd61993597b1. 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/ITB007470538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef26d9eefc3babebc086473ec15822df284d7a65a034968e8b0c7fb049dbf9de. 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/ITB007470539.
I Piu' Grandi Successi Di Sergio Endrigo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fe5547e495ee5efbf49091cf3bc5ecf7a43bbb20106cb59172a21e4efa8406. 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/ITB006379596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaee7cacd479de003315bf0f13fff0d2fb98b9c51be5cdcf8e2dc4235f1d0ed3. 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/ITB006300554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec5f82dd03f50119a6c1a9009e97930544e3096f0335fa3c71e259b8c1ab876. 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/ITB006300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35afa9493db1482363ce255501c20489044564d4bd0376076300452f38e8635. 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/BRMCA7900150.