Fratelli-B is a hip hop duo made up of Chandro and Flap5. Both members are natives of Baar, Switzerland. Since November 2001 the two brothers - Chandro (born Nicolas Bisig) and Flap5 (born Benedikt B
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 0xe2370ecfcf48d262f55be5baaea5ed8cc3c6e9c867b39ee1925191548d1571f9. 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/ed8e52d8-d752-471e-9a60-c76cdecefbcd.json and https://artists.proofprofile.net/proofs/artist/ed8e52d8-d752-471e-9a60-c76cdecefbcd.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 0x18102d376b0ce4dbfca6f263b91c9eb1e4542cce5d5f406ba0c358d945edb776. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/CH6541716206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c77860efd462ea6fede96a97db9d3c965263c7fee085101d84ad3509a8193c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CH6541716190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741ad01aab294d4220d5059e4804d51cf231a8ae58ae13b54f5c04f8850e74ee. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH5171100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190114e563dd82fecf73e03aabda691bc58406447fd3acc3ea87029b8e0304e2. 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/CH5171300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd211315b1fc3df96e6647c7422fd9e4e887bbaaeaf51b04374bb4c8002355072. 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/CH5171300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2322cb030a5da12f3aa05b01e0f03c94348a4a5aa37caeac17609bfba4a1ef6. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/CH5171300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf517fb3d5265c0c887b1aa31b5926a94d29d3f702fba72b93a567584dda8cfa7. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CH5171500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04a32c9ef93762f2f6c0c67330dda8938d176135813ef404a0b373b77d46f99. 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/CH5171500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956f16fb7f06b7234de6682e9e9a43d486565029065b953a30a9e3b9603c4144. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH5171500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84d9aaac36186bf36618a4d7a1a051c1918bdbf5299feb1ac887ec32f074018. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH5171500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9f80294d8608cef4e92bba97ef63a4f01ec7a484caedf3d1fc738a901e189f. 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/CH2181700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e251c4270a2e189ef050526f1e6abfbc14f866e4fd0ab4efba5f95273f7d998. 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/CH2181700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5970d143300775953c718a80c573aa330747b51b38f1d5833d6511de07f1917. 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/CH2181700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8ca74ddb2658b4b6132c4424ca1e6d4f6c15ec824a7d7e5303dd49e01d8c1f. 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/CH2181700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068173419f919744ebd8cd530af265c0daeb2a1b1199bea3af49926d9b3edae3. 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/CH2181700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2b7e9664aea46010ae665215ad02b053e102602d7e48fca41b0797accdc714. 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/CH2181700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9434690ff1b57848e05fd50667ac9da197fe5a88d93ff3ae512bf61d2e91966b. 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/CH2181700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f219f006bb3db9106c5437eba63f3dd8a24fa0daeaf3afbe76eb0763375072. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CH2181700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702037e4a573ed10da7b75e4b0fcf26d56a4d89a2e8c85693036fe2c0ff58c8d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CH2181700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a707d3d99b2f9bfd8c7250aca5a62e096c89f9cedc19ec2c676c2a2f5ddec0. 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/CH2181700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503de6544e1bf702a4ffc59561e4c57e5cdf719f0c5ed1d458963619b99d6381. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CH2181700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5335dc7cce4d5a20d10b5522de96e47cf8849481f64d2f78090a60ef16f190f0. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/CH2181700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311582846f27c6c719fa5d1a4ad6b0cc4a17d7d69bd8a4005c8786334574cbd1. 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/CH2181700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f985209e11777e88c3b11996ee58b14cef51cea4ba6b3733a2008b772604ee. 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/CH2181700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6480d92002fe9739c0bd702736e135b0c0ce059d0a095f3f47a3ae7d9e4d562c. 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/CH2181700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a232f75cfa4cae6f1e7c4bdd92af0e7bff882ae81ca649a89020fb8e63855e6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CH2181700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9a0248443ee265c21950691d1415dbc84ac196032ee784de1d431cff274dc4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CH7812036334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d4ce520a1cafd3bc24b1d2a3832b4752440990efebe8260d3accb986a52fe9. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/CH6541800396.