Hermeto Pascoal (22 June 1936 – 13 September 2025) was a Brazilian composer and multi-instrumentalist. Pascoal was best known in Brazilian music for his orchestration and improvisation, as well as for
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 0x5928411d670afbfcbbc574eff37b4ed444da4ad850902c26eb3c302bebc7842b. 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/6a4600d9-2ffb-48a4-9f1b-9a670f2fbff6.json and https://artists.proofprofile.net/proofs/artist/6a4600d9-2ffb-48a4-9f1b-9a670f2fbff6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
No Mundo dos Sons - Hermeto Pascoal & Grupo
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 0xddb28d8648fa3465474e3fe0cad12b7e374042295ce8045933787dfe0edd3467. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BXSVC1700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b23b77dbd9a7da726dbe8f61d30d7db7b67d27b68d4992d863ed9ff7111f4c. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BXSVC1700299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8363d3bbdf88b9e31c29a0a69b3c4a09daf3c775f65bb3188fb7c4962cc2f42f. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/BXSVC1700291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3000da5699a8b4ac4d612da1163d9d45c7f9b8425362fa58ac5a81b9cf0dbd49. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BXSVC1700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdb36015c35206370b2b974450aa902d63b866f2c8fb9d7956e65f14fdbca1c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BXSVC1700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a52e352ed5a5c1233b12069d3835aafce38c9331a4f603ccab9530666f5249. 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/BXSVC1700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35c726731989b7f07e21d8be4848a7cd57008e4d99e74220239d87dcfc1fd6a. 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/BXSVC1700293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684cb1ec6030e088545f324bba16e8dd207a6c010f9bed91b3c8236dcc11da4e. 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/BXSVC1700294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41fe2dcb4468953d0ee3923575ca438a44408790483a5aabde96b72d3396b52. 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/BXSVC1700303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2f874103dece7dfb3f29f96129648c678ea8c00ad7cb1be6505bf97a539eaa. 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/BXSVC1700295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9094494a382f76c89bfea26db9870129edf3e649bad37e33aa266f1a3080dd78. 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/BXSVC1700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a945dc93030690a43293332211f3d05b16bbd4aea587263fdef1ebbf2f78f9e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BXSVC1700296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea55026805127839bb94f44fa1171bfd829b883e8f2a7ca1400e0fe060b0e95. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/BXSVC1700297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcf91d4477a2c1b63bec3716e10605cd63c1f02a5f063b9322247f76b38963a. 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/BXSVC1700306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1e873baa76172814f5f78a797c5db1e764225fe767563561b074664e6e40f4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BXSVC1700298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8efa0592336478ab7f7f927921a1fd9dae36e0f82035bc86fb4244e5b74971. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BXSVC1700307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfa240686fcabc5057b5187f73d437ab9816d917ea20b93d2e4b0b587fa0586. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BRMPC1500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405b044ef9feb8fa294da285e89fe5147ac6627f85d4c38a7d7a035dd1b97e3f. 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/BRMPC1500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2bb001b9ef915afb5bb63e40b768f2e57fea1f6251c75ca56670b792d6bd0d. 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/BRTAC0300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40de08760e168e188e7e266b769da2d0edc317c75338e15c8fef690ddd9adc04. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/BRTAC0300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453221e331886b3b3073cb038928a5afa3aedbaf19c5edd058538d0824610946. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BRTAC0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687edcb5714446cd5b7537018fee2637f4b05b926b99d890fa9fc12e6cb4fd6f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRTAC0300051.