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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904ce448dabdc6d703930c8ea93e93071ffd182aa0cab7e92fb54ef7f89e2cca. 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/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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4109e66b70aab5de3fb308303bd004a22b7909d69c0994a658ec296f7d71ab9. 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/QZ5FN1956603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed016ee7c389c445c8cac090384bb12b68b6c71f47118a90a9db8781990d62. 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/QZ5FN1956607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19b28856c6286cb80ef2f0fa168f0b80c9379f15ebcb301c150fdebff98aeda. 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/USLZJ1886224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a46f7ebc6353192bd2c9577427ea4eb463d0c427bfcab89f3ae3f758efddcf5. 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/QZ5FN1804013.
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 0x6b1b5e6dde9e5a41f8c9e6fe7de850689c173971b4f7997a1cbb070cc032daa6. 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/QZ5FN1956614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe904e830ee3ad88c4678341fa7d2bfcc845f9998a32c6db01bd8e9204982faab. 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/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 0x28f01f407bde1fc9fe5b5018c4c50281a2e4b61c4f3bb80e78eb221cc1d65191. 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/PT6DV1600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b8e6cfff7e6439b0eb0d3f71be49a3ffc91e1b6f953731c325ebfe698b02d7. 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/US7VG1647570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc347cf78395454c99640cbca43ec6d7d919f4296b584cd9ed37382e96268a4e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 0x4d725886b68a65b33d601faecc25feec351847c68531811c0c4bacf4a9dd81f3. 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/MX3741200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664ac5cad3629d771db7d8285af487abee3ac408939be1dacfd3685ff442c671. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 0x852cef63441ca49676c00d7dfa6fce08bb07c4cda0857d5ea673267d8eff6df2. 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/MX3741200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ed9995874cdd5c62321e429240e793cb45d085af8a6fb7720aef1534a41629. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 0xed2c476d369f7e5a9f84001394c4a7ef667ffd7604663c124923991445de0f34. 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/USLZJ2438456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cb9bbe259a9d80897f1d3ee4e4ae28b6eba6b9ab72bf7703685222da479999. 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/USLZJ2220795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580eaebc8c5d134be4b975fb5cba309a2702bc5804af72438e6c0bfd5b9bb1ef. 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/DECY52000443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b719a893f5b9123746fad72edd3c958cbe1af14d7c4d3bfc76ae058e73854b9. 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/NLC7F2000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd7378c72039fde2b4878dbbb2db6b8021152dcc1b678da2a1adfe3a5ae247b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 0x5d4d79b027bca02fd3993b6750f536d7a9ee4db6b301b1e2ce98e99fb0c6ebb5. 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/GB6LY1600483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b1f9faae1cefb60d4fb8aa966d0fa9178850e20427a9f25bbadfc316339970. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEGL62000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af149bdda3c051333034e305e87c8723f61ca648b07f9b1cb7e871848d7b3e1. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEGL62000021.
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 0xa19b28856c6286cb80ef2f0fa168f0b80c9379f15ebcb301c150fdebff98aeda. 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/USLZJ1886224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a46f7ebc6353192bd2c9577427ea4eb463d0c427bfcab89f3ae3f758efddcf5. 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/QZ5FN1804013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2438086193da5daf502addefcd6956e5b78872d8e5e4ff9a42d5adea04e73f67. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZ5FN1815997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55051b2cc4018861d75bcca62dab550521b1d7bdf3c9f5352f8023413e15544. 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/GBR5R1300350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40dbb684dc17d5e5f2c360556f89063dc1264809c42dcc0ac092ec6db4b5f21. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/US7VG1604858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b8e6cfff7e6439b0eb0d3f71be49a3ffc91e1b6f953731c325ebfe698b02d7. 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/US7VG1647570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6e32ab8cb25bf13e9f9ab8bd21c1adf3d328300fe9f9699bd08b2e43a5c1d8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEQ121424072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6357eba2214b11bf20985cecb97a347cd80c1b33791e99b23fa7361e74cd53. 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/DEQ121424073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffb2d1a3b555ad2b2d30cb24d10329db57a81a80ef430c58f009e11112f199c. 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/MX4811300027.
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.