Vitão, Portuguese for "big Victor", may refer to: Vitão (footballer, born 1994), Vítor Hugo Rosa Nascimento, Brazilian football midfielder for Cong An Hanoi Vitão (footballer, born February 2000), Vi
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 0x348fa536f2147e15885e35e525a1683a8f9b73db2632160bee45631790ff6d23. 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/22322eee-f1fe-49e5-9b7b-e51958e28708.json and https://artists.proofprofile.net/proofs/artist/22322eee-f1fe-49e5-9b7b-e51958e28708.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 0x16b2e54f590278d2d6455706bd2a7d3baf2c2b583a0ca9cbd0e02ba604b94cf1. 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/BXBMG2300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d18ef930897fa10135e1b7a2169286c55b1634b9a5301d0770c5a8abcf38a1. 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/BRD1E2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef325fba0cb3ed76324b631e8b268535a44f7c29ad33482a20b609e5af1be05e. 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/BR3752100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60ee9c7ac81dbdd4966c70e021ea21012f71889a0518fc52167ca238e2c520d. 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/BRSME1801776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60ee9c7ac81dbdd4966c70e021ea21012f71889a0518fc52167ca238e2c520d. 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/BRSME1801776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce54fa2fb09e8a207a5ef10a60c2c8966162567406a55c065037e590380e475. 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/BRUM72201344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07995caf56def132e69f17c5b739b44ecebe1c799ab5ec9115c9f146e9df42c. 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/BXHAC2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd3db30ca93a1b25cb0835d86b1ec6c660be5e4f03c11ee98c4ade7487d4e5d. 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/BRUM71900789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a58fb846883d743a478ce121d403dfe3aa9086ac468dc2e9259e2c69b80ddba. 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/BRUM71903291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd3db30ca93a1b25cb0835d86b1ec6c660be5e4f03c11ee98c4ade7487d4e5d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUM71900789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cb616222f26509c84c0d2d3b6b96bae4efb6b637cc72421e71702ed70f32b9. 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/BRUM71901149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bd7b97bee79b130837445d763435d6a4e24e30a0a2f67bfe3f4ef4602ba9c9. 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/BRUM72201639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ced96193e27f9491eceab02664f8027b5d6eee115253bea5dd82f768f6477b1. 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/BX85Z2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabd5bc2ba09ae9a8c9b9b6c3d8e9bb2a8c1bc488ad314bb32671bfb937795b7. 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/QZNJZ2317310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13f0ebceb5bbea95ed823470cfc1cfec98093c1280520b59ccaab124fd3dcc6. 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/BRWMB2000921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1d6fa3bb4b62d9912210e762a3af82b474fc59f7c2b6359f084d533115918b. 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/BRWMB2000918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be16c8c9eb7d08f15d1a19c821e83537b3d350ff87057fc76b06954a37a3bcd. 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/BXHAC1900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c41fcf78a403063630faa4c63184113c3595ee1360079dd1c3e201874013a7. 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/BRUM72100956.