thumb|Gabriella Smith at the 2014 Cabrillo Festival of Contemporary Music Gabriella Smith (born December 26, 1991) is an American composer from Berkeley, California. Life Gabriella Smith was born Dec
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 0x54d8eaa73d59fee46c9fd6c896061f64ff186218106c1591910118b0eb4ce939. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8548cbc-e9df-405d-84a7-defa8d96e110.json and https://artists.proofprofile.net/proofs/artist/a8548cbc-e9df-405d-84a7-defa8d96e110.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 0x59c67c91e4e5478abbc45b24916b50990bda92e6c6ce658689fd0f31c1de939f. 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/US7MN1901113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef86cfcc33fa161c1c6406b6e11148b984eeec1ac314e780fa4e598c70403fcd. 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/GBYDS2400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8614e2d883bdab6257683cb5b4740177e38d1949cc895135ef7698851c9ff7. 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/ISW212101201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976f7fb9d6b787041ca4ad03fbdd9b34f7be5f81e3072e1513f51513185a8f16. 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/ISW212101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc96e01d0a0f9b3976d96514732133dc98e540043888bd2a5576dd5a757e9e1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ISW212101203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031187dcfb2e985df52778d2bbffb641435b9c02b455a1f4adbaeef6594ce7ac. 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/ISW212101204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa979a1e65c8b7745a6ffc76c1e608800d6817b60897da05a4912d7f2f1d741cd. 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/ISW212101206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bd59611e08367754fcaef94f686f91da4ed33f60913a4bd34e4bf6051f91bd. 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/ISW212101207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1db2e015b2906a31bb6c7258146fae9f354e93a4c3b1360f602b05c61664b3. 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/NLM9R2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5131ae253372c36187a85ec2dd1206c191136ef7895ff43369fab29fc2f2d5. 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/NLM9R2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687558603f2dfed65f9bb1e4d17a650eb32c323c5549f87417609ff8f04bbfef. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/NLM9R2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c8557f2f54577c52c5923a547f15907a6e0d7b3f27b19ef06e83725ad075cc. 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/NLM9R2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91f613de68751289fad2f5cffbc8276242c767dee1ede5bdd25b4f4723dbf85. 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/NLM9R2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6325b20f91a35bc0eecdf5d248a4803ba6c604043e43e3b3d4a4145d9aab04. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/NLM9R2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0ddec5850ad2d638a8eb79c800d80b16f1ef6af952665367e90ba47ca33ae3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLM9R2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe43712bb044c2711c071b1f60b82e41571974f6dc9be579bfd92d3e999bdba. 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/NLM9R2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8726f31559cfe42b923ffe3fb8822c11c2fae400dbc3a5ee5600cdc377a94a5. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/NLM9R2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5859304ee36465e7e5f520f1010d4cc44a787917d7f8d2c910d998d596f7d9. 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/NLM9R2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3b1f414ae73c0cbb317458cc6d28dafa6a40f8d1277a97941210335a93758f. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLM9R2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9a74fbda56e65519ae2221fd4ca7e556afb73a90964db9e661b0e395d05e05. 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/NLM9R2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed25af218d855d8e7714de2f50d8b1a2f9f8eb339e2235e5f383157f5d7c7e1. 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/NLM9R2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02547b27d8fb2945f56ac20cc1ca1c413fc6a31ea54e5d267bc6477002cf6cfd. 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/NLM9R2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe085417b8bc764ad01dcf486108cc7003280133a535474fcc7a2066ac43b7292. 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/QMB622203203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeaff0e556c90a4e55585bcd0e8988a23ec450dfd744662446f2e393710506e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMB622203209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8a1d3ced84dfce061746589ab61e7f471758cf1b60aefc1821145d1c735b3c. 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/QMB622203205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe085417b8bc764ad01dcf486108cc7003280133a535474fcc7a2066ac43b7292. 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/QMB622203203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8a1d3ced84dfce061746589ab61e7f471758cf1b60aefc1821145d1c735b3c. 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/QMB622203205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55912e43d04cfc51a85479f07569ba9cd79c292b8aec5a4d8042534870158a1. 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/NLE422540401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7616ea2348269f244a1588652450e81121b13ab0919edeb9989c5f7e838ce398. 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/NLE422540402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de84812803af6ec1cab8ff515f9bbb756c05dc6114746b2dcdeb24a4902f098. 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/NLE422540403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec20f215f3466359f8a4d2f58d5ae1971c6b22ea438061758fc3a27a894be1f0. 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/NLE422540404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665ba68e8232a64d3f90930ac644a522ee44214efbd25d94c545cfb5f92d83a2. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLE422540405.
The Unquestioned Answer (Arr. for Organ by James McVinnie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8311535bd348a24062ff2b49ace249eba4d24c6a872e97996faec070033dd73c. 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/NLE422540406.
Ellis Island (Arr. for Organ by James McVinnie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b28c590673e2aadc06ef4c9ebe742b0a35b640c6fbf6217d8784320d8e40e13. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLE422540407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae79f33825c2f33a00379d7d4584273a6f0379cb788bd3834d44789d1255bc2. 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/NLE422540408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6454f41d240d0256c5a0ea2a235a9baf9607321615b46531026e5d4d90a26242. 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/NLE422540409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4aeaa7c1dfeffe481b0ee6b6bcae166fae259fc26f474130bcc2ab57f039d8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLE422540410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dda53ad6817e59817356f396c57df3fdecefc9c0167957052bab6379d86c67. 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/NLE422540411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e02692d6429563c964bd55b982007303b7c6df6e41e5f0a8a3d8606571d903. 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/NLE422540412.
Sonata for Clarinet and Piano: I. Grazioso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f8e8bb6ff5f4bfa4a94294e7374fde962dd330cc491440223d8d7a16ebf7dc. 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/US23A1587444.