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 0x31253d7647996db09110294ac374af9d46c4397353b20e75539fc7fbf1686f6a. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f943e0c-d990-4716-93d4-04d93fc71237.json and https://artists.proofprofile.net/proofs/artist/1f943e0c-d990-4716-93d4-04d93fc71237.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2012 Texas Music Educators Association (TMEA): Vela Middle School A Cappella Choir
2016 Florida Music Educators Association (FMEA): All-State Women's Chorus & All-State Men's Chorus [Live]
2011 Texas Music Educators Association (TMEA): Fort Worth Academy of Fine Arts Children’s Choir of Texas
Fort Worth Academy of Fine Arts Children's Choir of Texas
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 0x30020258129aae64c4b8a432a496097e78364e7b6585a58140bab4dd07ee83e7. 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/USVZX1110603.
2014 Texas Music Educators Association (TMEA): Fort Worth Academy of Fine Arts Children's Choir of Texas [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414e1fd59383272990ac8fcab828788819188c8af7e0e706bc37b5a44c767dcf. 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/GBSMU2598512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc519bc2d56f0137e36838ae336c7a49d5b7e006f51f048f95b794bd4b4a159. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBSMU2598621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ee479825217ab924f1aa4faa7ea022608076622546c66baa6a0c3566ac208c. 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/GBSMU2597077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0392938448e96579de702b55b91685f20d56153645dd7deb4cdfee5fa4e8d80b. 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/GBSMU2597079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8730030f053527c50386622e2236db59512cf8044aa568e55fd8faa6d87764ec. 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/GBSMU2597080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7ee12dad48e613258c5a63aaa3239715725d8c01eca354a1e0ba137b45bf60. 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/GBSMU2597085.
Changed My Name: Marking the 150th Anniversary of the Emancipation Proclamation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec12dcbad5985c9dd27b68b22c45e09d69e8b05996ea96030f043b5987234902. 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/USVZX1312701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3b122916a10092ee8ab41e3e71bf45aaca6ca0b57c795817968421e7738b5e. 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/GBSMU2600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf08349f0c4026b755366997fad3a3423f7f64337c9ef0eda9f5ed32d494fd4c. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBSMU2596772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e1420a872aeb596aba1b2c842d37de86ac2a553c5bef2cb3b28776f00bd1a4. 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/GBSMU2596777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851b6f4ecd1438f8ecc4e4bc35fd5ad75fbec3d5e66cffca6e50c4dfb6c024a5. 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/AUAB01150182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea66c1f7f117b7907f939a5f4d9867cf383af286040b88ced8c3fb7531a550f. 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/AUAB00550388.
2010 Texas Music Educators Association (TMEA): Lake Jackson Intermediate Men's Choir, Friendswood Jr. High School Varsity Treble Choir & Cook Middle School Advanced Girls Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b639e4bc5e83b314b20f979da1e4f7a82b982991a0da704faddbee9a94d4ba. 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/USVZX1220606.
2016 Texas Music Educators Association (TMEA): Sunnyvale High School Varsity Women's Choir [Live]
2016 Texas Music Educators Association (TMEA): Hudson Middle School Mixed Choir [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fceec9f6fc7f68281e259377f7f5f264743e6a0cf43043d1d2c4c6e97ca1fa. 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/USVZX1612005.
2014 American Choral Directors Association, Western Division (ACDA): Tucson Arizona Boys Chorus & Del Webb Middle School Concert Choir [Live]
2014 Texas Music Educators Association (TMEA): Navo Middle School Varsity Treble Choir [Live]
2011 Texas Music Educators Association (TMEA): Memorial Middle School Advanced Girls Choir
2015 Texas Music Educators Association (TMEA): Kujawa Elementary School Eagle Choir [Live]
2016 Texas Music Educators Association (TMEA): Voces Unidas [Live]
2015 Texas Music Educators Association (TMEA): Richardson All District Elementary Choir [Live]
Bonse Aba (Arr. V. Johnson for Choir) [Live]
Richardson All District Elementary Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb298d0827fa9016d489cc33faef28168dce6fba058aecbe560aa70636e620ab. 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/USVZX1506105.
2013 Texas Music Educators Association (TMEA): George P. Mitchell Intermediate School Chorale
2016 Texas Music Educators Association (TMEA): Beckham Blazer Honor Choir [Live]
2014 Texas Music Educators Association (TMEA): Craig Middle School Concert Boys Choir [Live]
2014 Texas Music Educators Association (TMEA): Frank Elementary Choir [Live]
2015 Texas Music Educators Association (TMEA): McCullough Junior High Chamber Choir [Live]
2013 Texas Music Educators Association (TMEA): Walnut Grove Middle School Varsity Tenor-Bass Choir
2016 Texas Music Educators Association (TMEA): Stephens Elementary Honor Choir [Live]
2014 Texas Music Educators Association (TMEA): Rayford Intermediate Honor Choir [Live]
2022 Pennsylvania Music Educators Association: All-State Chorus & Orchestra (Live)
2017 Texas Music Educators Association (TMEA): Westwood Junior High Varsity Treble Choir [Live]
2014 Texas Music Educators Association (TMEA): Jefferson Jr. High School Falsetto Fifth [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30020258129aae64c4b8a432a496097e78364e7b6585a58140bab4dd07ee83e7. 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/USVZX1110603.