Henry Fiol (born January 16, 1947) is an American singer, songwriter, bandleader and painter. He is known for his traditional approach to son cubano and other Cuban music styles, and he is considered
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 0xe0e4612d18f18c1cd95c5ae4c37eec04202a3f3db5b7b440924ec13ff89830cf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d97aeb92-b133-4a43-ae46-f28641a4e65c.json and https://artists.proofprofile.net/proofs/artist/d97aeb92-b133-4a43-ae46-f28641a4e65c.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 0xc08129620bd78c36da9fc079b84e9993351785465d6838eb65cdac334c588385. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:07:00Z), 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/COFC18603101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb895553c0317df768a0a35b02f04111ea79aef7729ced0f1379b71023fd814dd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/COFC18603102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c8a1777c40c44529343be767804c31f99d9e1dab23a762f0bef0f0e8fbaa77. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:19:40Z), 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/COFC18603105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6a6f591f5ee95768ac5d06e95446adf9433d8b37d40acb3401fb1e58a7c477. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/COFC18603108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8993708e3be36cb92ea26e07b929b929ff749f1f2971569de6b99a26e94357c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USLGD0910200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423d8ec9e2d7846b6a0ea9d3e4d31207bebfa63cdc556edcd32b9f94e4e6bb15. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USLGD0910202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57f274e2808cac04a463fb874836bc02da22f2ef0bddf038c7437829bc52971. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USDHM1202620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29df074502137a98bda837d57c757becd3c5fb569e12b0bd479ef93992d87ca1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:49:48Z), 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/USDHM1202622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bcb38385b8a93f5a91985e2cff70ed7d58da3bc97829cedabd381020956234. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USDHM1202625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb60c7b1b5da9557a897f2eccfd13cb096e851be588bade78ec8960aa3b0c5f8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USDHM1202626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76605f8717f7bb37736c9033cd664f823bd9295a4ce1a5db380f4754eb7be52. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USDHM1202627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef042e25c30fac70138582ef4a7d36620c4c439f662af7aab4b0778a45d76e0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:59:22Z), 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/US78T0733381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961f1d57a9f7641667a2cfd7e4e37c7de7eb2424180a30e3ce9019282b896a68. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US78T0733385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41084550f7af51aacbc997b62c385d7ff65635fd45b8983e853b60132642e5e5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:23:11Z), 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/US78T0733386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a6eb31c8e299ba38d355ca4e56bfa02549df0ad613aed0ff64578f2b0110b0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US78T0733387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade3bf68ef8ddaba6e59613c770fd4484b13704bbecbf8d343809b13d5996854. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:31:53Z), 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/US78T0733388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001e5cb22a2b55b33bba3bd41797f4668d77b7f77e160308d465072dca6f9530. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:28:49Z), 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/TCABZ1461027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8cf72afc985bc1329fa1e3df0e17fe7a3af6c610860ddd71561ab6a177e5e7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZ5AB2075899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdf770a1593afb20a3aff4d23399d3bb884fe6b486fc5e8ce52d55c5e4b7ecd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:54Z), 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/QZNJW2331502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef339bcdc0cd1a97bbc1978b3e4b008d1c5114166e7bb6f896a6f1d654e710ed. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USCSG0591610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f8f15519de11b7ab00ab28cc06b31cb25c104fed5df77b1c679933c035752c. 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/USLGD0910097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb5a59d3ab4d7ecce2ab6215bdf87bf418dacf24ab3122efa658d5c124e4f76. 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/USLGD0910100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9aa34840edcadbb1b983cf0ed74b38ea51e6b68ed281905c32c3f5043c2050. 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/USLGD0910102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6352254ac502214043e6b10e1e3ccd089fe856165a8bed624e934a2e8520944b. 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/USLGD0910105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9315f1f9a75080bca744a827e2bfa7b11f34dfbe541e538ca74f085321b6bc2d. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QM4TX1815297.
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