thumb|right|Christopher and Stephanie Gabbitas at the 2019 Grammy Awards Ceremony in Los Angeles Christopher Alan Gabbitas, is a choral conductor, lawyer and university professor. A former baritone w
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 0x5db0b72103218c0bbf0177048f4f343228180a0cd35a7bd1064c8936321541e5. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0b21e41-ec2e-4019-b0f0-3889b3226b5c.json and https://artists.proofprofile.net/proofs/artist/b0b21e41-ec2e-4019-b0f0-3889b3226b5c.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 0xbe288b46b62a7481e90950a15c58b49bd0e8d077796bc7f0b9c05791dbb7eb22. 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/USA561318384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf629b4d31b68c4631fd1d347252e00ac747a73f129db196cb6b4d947510cfa16. 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/USA561300514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1aaf421ab0c1e11e8ef27829eb3018b3fce8e506ba01616834a89f490a6373. 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/USA561318385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30da9c0750bb196a9f09ce303d7599d927b2c0d6e476a4b1c9dc85767736ce7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:32:27Z), 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/USA561300515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8eb0bf26cd9d7ab8a00db41b81722ba69b7698c70ae42d26429cc7b4a15fcb. 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/USA561318386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc421acbd27f4a07fc88ae9e74631d71b7b38aa4faef07730f1da830f6c5353ba. 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/USA561300516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8861ed76cd660292ecf65716b5181fd6937c7e1ce064be3555f4137b739439. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USA561300517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9817701e75d416d9cd7163fed83972af4a066189d3717a829033991f15f8bd86. 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/USA561300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e1df9cd4fc1ad04891070b94bd7022cedf5cdf1811d466adce3699dfb58f82. 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/USA561300518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb5765755fd6b1c56da30168e0808eb14da84ee85541368f89173db0c201850. 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/USA561318387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270345664462650feb9df19070dca7e01a8ed255fe047910cead541ba3546fe4. 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/USA561300519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35576f0e538617a1e2974c64479336d897f3d44c5c78b0f7455e81a9a6b717bf. 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/USA561300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9ae321bc5b9889eae4385708286ea35eb52181d7ba0c9b7c93bb56f8e22f81. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USA561318382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859250c7824e689fa1cf5277c8d261dabc8c3aa99733695cfc7adb7e695ad4f0. 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/USA561300522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ce8d6a7abf711778f353a9b0443265eef8d1bbe820473da897e5625b4724d5. 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/USA561300523.
Shir hama'a lot Ashrei koi yere (Psalm 128)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af177300158b012eb2869004e6f1d1ee8b0e6d90ac5a1628972a1a63b177922. 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/USA561300524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da0bc48166d408914a33ef8a81537aa1977181bfadeb62b95b0a7117ab7bfb1. 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/USA561300544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f4ce2d417dae2a1b741cd6f6d8f2f31972b56e0d6d2388a1de9df1af98dbb1. 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/USA561300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa94feaa550e0175bab384876d95ef88890c1d34351ba3cc9cf7f015566f8a97. 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/USA561300526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b372cc6fbbbe4ab12b5c6305d688314db2bc4ef3d5b3b9932a7eaba514e1c17. 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/USA561318390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eea429e80702137fb742a73fec8405f189f1541e08706a13fb6ee9ff888c3d5. 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/USA561300527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b15aa2006498f25454d045eb574ca606ce0bd0899c2c6441012eaddf98b6d4. 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/USA561318391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dab30021ffbf0a71f4be1adda2a711a913e9d3504cdc0231b5ed1a01706772b. 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/USA561300528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c74cc590f0025341af14686e5586026f8e876b17dabf89ffe651c315ceb2337. 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/USA561300548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfb5d4e91905391bb411f7d068a84703edf29ed14d3e79908546039c6fad7dc. 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/USA561318383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb007ffdefb08a2ed7cad5b11bd80c6ec28bcd0df66f3faf2b201e70e7f403d4c. 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/USA561300549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072aa443f6a9ac0f946a576dbf7dd13d87e3f8fa90081d7ddf52da7ebcbbe80e. 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/USA561300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6794e4ba29f845a67a91a68049189ace83efeb6414bf1311f4dc47679b46ee22. 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/USA561300550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4d51d2a9329d47aeb41ce8bb528ce415230d92e9d88465b54c5ee7f05ee575. 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/USA561300532.
A Lover's Journey: Shall I Compare Thee to a Summer’s Day?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c448fded58deced79b563719d0f151a8413916ddd6845bc95c62e09e2e7f5a3. 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/USA561300533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ce954d41acdfce1fe474c1ff19f0f4053ae40c22ce6b142a9eef739dd06d72. 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/USA561318393.
Veni Veni Emmanuel - Arr. for Choir by Philip Lawson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2bc495eeb50544e4074e4992e69c1a48e1e2a9b1bfe841ce9dfc767577093a. 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/GBLLH2376201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7666e407a3970ccfd45943503e2bdac441bac9f13b9c776b07ad46c0fc2b6b1f. 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/GBLLH2376207.
Noche de Paz (Arr. for Choir by James Burton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689b97743258d645b82f14276acff50c801b2a7c890f4bfefea8e9e36fe3e80c. 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/UKCJM1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa330809615f8d72dec3d0095505be9adc187a1f6f6d32d6b4536898c82f7a4ae. 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/USA561326678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d50df267da692f66d9a3c227d9d3fdc088fa45ce9456605cc29a9ff762d2ee. 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/USA561326680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc1fcd52f7c3ca5213e4b58dd48a6c5949a24beec6f6c3d7ab0270336df1c8e. 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/USA561326681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23efd415416679c49c7c0a91eb4a6d6592a0b0e4199c4f79fa4e4419a2f6a351. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USA561326679.
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
2015 Texas Music Educators Association (TMEA): Flower Mound High School Men's Chamber Choir [Live]