Leandro Fahel Matos or simply Fahel (born 15 August 1981 in Teófilo Otoni), is a Brazilian football coach and former player who played as a defensive midfielder.Série C: Ex-volante do Botafogo celebr
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 0x56b89c86e5db65ee5c7f1e4119a78dae60222f1fbee6e71a8eea159c66efaeea. 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/fe87cfdb-902a-4421-9bbc-3ba406a40348.json and https://artists.proofprofile.net/proofs/artist/fe87cfdb-902a-4421-9bbc-3ba406a40348.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 0xf10004692b65895dc99c59f179dbe16d8614a06e47f00e062548a78437a8f152. 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/QZZ8A2585522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf23079a0d0382668978786b3d7fde373fdb799ddd6b560075bde0d98058e4b3. 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/BK3ON2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538cadff8c12dd57360fbfdb34a75a5f55261fc9f6a050060651178cda14c32. 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/BRKO12200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc569058fbdec0cf2769362db86f4dc6d5a80a96256f74f684355d593626d730. 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/BK3ON2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dae55ab72b33402240e49cce3005f4a3ab49c38c78ecf3d40eec858a2108f87. 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/BK3ON2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda86b5edae2f44f4815e9fd0d005c82d4773196b29b9b372ef12804858c5a24. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/BK3ON2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6e8f38ef6ab5697ae17a0ecedb4620ef6ee8d2ea104c1feb6b918538ad3e7d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRKO12300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086d981adf5a7d2ac340b7b0333c003360f4d333b8997823c79f595fdf8c0fbb. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BRKO12300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6897b60e48c54a70c0bdfb38acf98b606ded1b5e7fc9ba1080d5294c8974494a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRKO12300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e158a1983b1424044f91408015a954e595355c44ea04f74d8a18e146b7cfc7. 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/BXWMU2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d44368d37a6b8c2140d009f43c449501f04846597063fdec6459927a0c8303. 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/BRKO12300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d84b5171e928337a9d993ce7fc8a1e46b63262340e19ac3b2ad4d50dfdabcb. 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/BRTRB2303227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33deb22be83e18e0bcbc7690a8956728b8509653e769ac3a391436fac83dc3cd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRTRB2303231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3030770ec5da170bbdfcff9d529d91e817d5daf3637c6fd3e31a65b6eca3a3. 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/BKEHX2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6f0170dbdac687d2cdab9866e93df760c57c40b62dfb66f3b6f3ea4a842166. 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/BRKO12300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5d5d3cf31ac8ea56b85805a6d04aa2a7ceb99e64e7fc4de9563f0530bb11f7. 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/BXIV82413253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5f7461fed9deeb84a29bc2f1dc356aa4959a62d07534b96a6feccc3e058c57. 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/BXIV82498096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5f03a49d80381501fe639cbf68c7c43af9aeac260fccb16113d9f9defefa85. 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/BKB4T2400011.