The Carbonfools is a Hungarian pop band from Budapest, Hungary. Formed in 2001, the band started its journey for national fame with its debut at the Sziget Festival. The band mixes genres such as rock
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 0x4f1a0d1fd92ed5154b324c222da8a593bc1bd3e7cac1db5c46fb6945eb1e1e59. 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/1f5568a2-6649-4dde-aa19-6f90e0bf274c.json and https://artists.proofprofile.net/proofs/artist/1f5568a2-6649-4dde-aa19-6f90e0bf274c.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 0x27a2144fc6a5291bea575d7aff72e44cd22fe419efb75968619cb4a7ab7aaa71. 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/HUA791900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecf5c0df7cbd366b44f12b7aa570d4f88a9682ee73e9e1747196fe63c7d7fd7. 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/HUA791900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc3fbc1d1c7c486f89a308cc284318d537bf90399674a404efb6d8f210670b1. 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/HUA791700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b0b378667ff70fed4a8081c6265a06b3b36473f923941333510d64669d38f8. 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/HUA791700119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1c4042fd57d68a56425e97733f256e61be575fa772b08ae39b27ea5c733f1f. 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/HUA791800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64725cbc600d1da2c4a02e9eb52c9c3205aab43f2267f9b88389b5feafdf3263. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HUA791800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f32dcba1e4e4f4f21bcb05ffbe5230f9b6cd9081096e4e260296888f1e5cb10. 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/HUA791700196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ca9490d5587663e61471297f027e7d998826297806b2ca8c76a2dd3be3eb4c. 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/HUA031400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb428656ddb0d44ce90a397491e5f584d301792ac514e19fcde1fc513d2bcdcaa. 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/HUA031400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d47ed6b68974959c59b3fed1ef16afc84b817a5cb8c04e8777f522c5f89a0e5. 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/HUA031400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74f8374edac2131022b27a2d63e9900fdcb40a1a95d4eea8ad3b7d091fce9f5. 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/HUA031400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eda1541251c5bc65a0ee6127f81ce1b3bae70c76afe58450939b7438fd1e6e2. 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/HUA031200252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50384c426ea7dcc520e5d177fe3e959a4b80a8419b09269f9bebe53bf3590965. 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/HUA031200256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a361f658fa7915b67f6664fab570e6b99da28d9667019676974adf87e1c05f7. 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/HUA031200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77002a5d43d22b74a2bc4ab0077b178a1d1088f42bfdf8885328b18e69d1a466. 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/HUA031000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8801c4bde4e4c9220a7756e314e6315d98be999a48c3898e2a19cb60546b7857. 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/HUA031000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4537c170ddd68c4d557a578ec5f12ef3ee28e1981e0104bd51a573e6d88fe518. 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/HUA031000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317b1f8b321b4efa4d206ecd45d68ddf8c373a82b254ca8ec5a68f40122c5d94. 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/HUA031000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d68586254944957ed15de162c38421641ccade413a8d455905e8e2cb497391d. 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/HUA031200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf700db6220a221a7685bca72de9ba1026d00be7dd0608969da05f66d95e008. 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/HUA031200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb3567aaa1b78e7eed96b64a9f3a2b1908cd962575a96e0686d27569b372a8c. 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/HUA792100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e52646a4f15b38dc4845850af6eeda76f57e642d2dffb7a9ab92b361335fb6. 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/HUA031200248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2700c2cbe3bc9ca0f5061c4758d4275245e81ac6444870814552b30b02e4b3. 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/HUA611802829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec0090616ba8b0c9e035c37f6559943178de00c5d745c165cd47b4656f230d8. 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/HUA611802831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92448f7e1c670e94dbb1572b36b4b1fd7edf41b520959fa427d158ae6f70794. 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/HUA611802836.