Zachary Dylan Gill (born May 18, 1975) is a multi-instrumentalist singer-songwriter. He performs regularly as a solo artist in addition to being a member of Animal Liberation Orchestra and Jack Johnso
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 0xf385e700e77d53aa70330102ed7a012e75f28540167b49f75bddea99c176f7bb. 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/7695ad4b-803a-4697-a784-346d5c3bccdb.json and https://artists.proofprofile.net/proofs/artist/7695ad4b-803a-4697-a784-346d5c3bccdb.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 0x07825726bc9399a6baa8ec92856cc608ef10c0748e2d7e1ed50e6f4da584dfc1. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USUM70818905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2675b2d46c0c6b852007381ca40ffb3ba63c7cc6d80ebf5f1be7d83b8ac71a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USUM70820106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece513fdbeab4cf86edbc4d3730b5f579ccd44b35b460be9db4f57456e973d61. 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/USUG11300933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eeafab05092c5ef02150d51b3b0db83dd4a6550283687fa38dbd881649bb04. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUG11700624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31fd5f9ca73e7fe7ecc68f279ff680483270e3e7da0d3c3e480ce0af9121fbd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USUG11700625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc9d4da4336f9b5545ec26b0ce9fad0f372f5453f19b17111873aca5a034db4. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USUG11700628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f633a337bcb814d87958af837dd4537e109a49259ec302acebcf91f3545ef85. 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/USUM70812021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece513fdbeab4cf86edbc4d3730b5f579ccd44b35b460be9db4f57456e973d61. 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/USUG11300933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278fc5a46d204610450ddd73e63b8e65a25dbb333b76761d524a79ce0ad40a06. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUM70612641.
Jack Johnson & Friends: Best Of Kokua Festival, A Benefit For The Kokua Hawaii Foundation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac10fde3a0fed9b2cc6f216ebc0fbb50f739e78c78740df203b15f5094f1c97. 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/USMC61200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278fc5a46d204610450ddd73e63b8e65a25dbb333b76761d524a79ce0ad40a06. 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/USUM70612641.
This Warm December, A Brushfire Holiday Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eae8639efd545957e200ddf021cba404653008291f637dee35841b529b4a8b7. 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/USUM71115634.
This Warm December: Brushfire Holiday's Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf058da57613744aa18433d75c2a4f3630c7d2c6f5ac988d44cf787357ead1b1f. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USUM70840429.
This Warm December, A Brushfire Holiday Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09f7346a5f8fdebcadff4fc8493303e37295cbf160f160191281f6f93313e98. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USUG11903186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa6027c00d06986674f401bd813b422d8eefb1e6da2841720259dc4e5895a06. 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/USUG11903195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915824d02d749b942557fc8d472fb736dc17b52f20039a5b401ea14560cad0ee. 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/USUG11903197.