Bufi is a surname. Notable people with the surname include: Aldo Bufi Landi (1923–2016), Italian film actor Ylli Bufi (born 1948), Albanian politician
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 0x904ce448dabdc6d703930c8ea93e93071ffd182aa0cab7e92fb54ef7f89e2cca. 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/ab4e46d7-bcf2-408b-966b-828535f08df7.json and https://artists.proofprofile.net/proofs/artist/ab4e46d7-bcf2-408b-966b-828535f08df7.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 0x2438086193da5daf502addefcd6956e5b78872d8e5e4ff9a42d5adea04e73f67. 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/QZ5FN1815997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe904e830ee3ad88c4678341fa7d2bfcc845f9998a32c6db01bd8e9204982faab. 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/QZ5FN1956619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e3473b312f7cf482487dbfd8a19756be1f7c025e5a2a4ba5dda4e9b7918e63. 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/PT6DV1600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc347cf78395454c99640cbca43ec6d7d919f4296b584cd9ed37382e96268a4e. 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/MX3741200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb720155f4687b4c00b6a5179ae71699cba4838f43126c28668af66e4d3cf59bc. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/MX3741200134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d725886b68a65b33d601faecc25feec351847c68531811c0c4bacf4a9dd81f3. 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/MX3741200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664ac5cad3629d771db7d8285af487abee3ac408939be1dacfd3685ff442c671. 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/MX3741200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ed9995874cdd5c62321e429240e793cb45d085af8a6fb7720aef1534a41629. 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/USLZJ2438453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cb9bbe259a9d80897f1d3ee4e4ae28b6eba6b9ab72bf7703685222da479999. 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/USLZJ2220795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580eaebc8c5d134be4b975fb5cba309a2702bc5804af72438e6c0bfd5b9bb1ef. 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/DECY52000443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b719a893f5b9123746fad72edd3c958cbe1af14d7c4d3bfc76ae058e73854b9. 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/NLC7F2000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd7378c72039fde2b4878dbbb2db6b8021152dcc1b678da2a1adfe3a5ae247b. 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/USLZJ2085947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b1f9faae1cefb60d4fb8aa966d0fa9178850e20427a9f25bbadfc316339970. 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/DEGL62000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef973576e4790b7e2f2d63eeaa5c4afc5b651ef36f1a4e961b3b22ce6d40097. 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/QZ5FN1983486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2438086193da5daf502addefcd6956e5b78872d8e5e4ff9a42d5adea04e73f67. 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/QZ5FN1815997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9c95f40d0b7fe52cfd003f41c99951cac60182df4af640745f2e639417ccb2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:13Z), 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/US7VG1647571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddf9380b36b68a74df8476cf9088dd9b35bc05e4e5912c35a721d6290d10977. 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/MX4811300028.