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 0x24b51e6f47e53251c77105f16f6fa00a907c62ca95c5519a5eeaf70471d2ed2a. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0be4326b-f460-4ace-9ffb-87eadab1b7ce.json and https://artists.proofprofile.net/proofs/artist/0be4326b-f460-4ace-9ffb-87eadab1b7ce.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 0xbc4feb0624de7f8bb72bbd79c3f8ad7ef893a40ac9d3d00ccc94cd866f0e5612. 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/USVZX1412603.
My Soul's Been Anchored in the Lord (Arr. M. Hogan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2a69a153a5ee9f3663d77f108be47583740d8e3a624a44abc9a426140a7598. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/USVZX1412614.
2001 Texas Music Educators Association (TMEA): All-State Mixed Chorus & All-State Women's Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cad8dcfeb27ad73512e7980012cf76fb086743ce0aa40dfccf2bcb5635eccc. 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/USVZX1316319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4164b861dcdf5bfa920685439c1d23543b5299c87a4db566ecee375f7ea173. 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/USVZX1316322.
My Soul's Been Anchored in the Lord (arr. M. Hogan for choir and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4f9f4571566840bc1b7c4faf4de0a761a7cf461e178acfde65a59c51d3a90d. 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/USVZX1316312.
Children, Go Where I Send Thee (arr. P. Caldwell and S. Ivory for choir and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb234cdf47a80117afb62660087c9c4ef2c5665b9cc1c971796c459c3e485da79. 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/USVZX1316321.
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
Texas Music Educators Association 2010 Clinic and Convention - All-State Men's Choir / All-State Women's Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3353ec16d39e35ca3ce17808cae89dacea7d21b678e706de603273900eb1de48. 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/USCGJ1913532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3b987ebaa7e8cbb67a3296b90beecd473509f991ba37af03101d5d090ebfa9. 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/USCGJ1913534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d92ece673db6a71b4a7987cf88913b5290901679771c0c1197a807df912997e. 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/USCGJ1913536.
2005 Texas Music Educators Association (TMEA): All-State Mixed Chorus, All-State Men's Chorus & All-State Women's Chorus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d202e7bb68b62d22120e98e71690dc263fc4e6ad91a0548238b54ad81ed9b0. 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/USVZX1315016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238a2d9329f4691c75d9da0d9b7ba6152424b12ab6907f0dbbc90ebc419cf4e5. 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/USVZX1315008.
John the Revelator (arr. P. Caldwell and S. Ivory for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad14431a78f243f3dfbed03ef3092a2b54ce527ddb6735fd9cb82f561fdd6a2. 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/USVZX1315010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2314561fd4b1118420d238c450607e2468bc50495f0a63cd7c1432abe7b53675. 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/QMDA61880153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbb1a52e493ac38fb69c20aacb91a70c7901a60bb991d4287fe6069b892aefd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMDA61880164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958fa8dc92067d43e51c3cfeb945246c1c254b3805b26cbdbaf208cb48626a8c. 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/QMDA61880165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f7f8aae106c20c4801002cdb76cc00ccd698485c6416b2e03f38a1ff1512c6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMDA61880166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157310f5342c41d72367905fd820df70af5923827d6493517b2d61476a076242. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMDA61880162.
2014 Florida Music Educators Association (FMEA): All-State Elementary Chorus, All-State Middle School Treble Chorus & All-State Middle School Mixed Chorus
My God Is a Rock: Hymns & Spirituals (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3d802a1d057797f14a8823f46236119d2fc4b5ff7b4e3dea333ecb3542356e. 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/QMRB31300029.
Jesus, Once of Humble Birth (Arr. C. Downard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ad8cc6555f1654f6fb0a8aa448a713a11de05bc68f5dc6dc07b6b37fafa9bb. 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/QMRB31300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a9539cb06cef91ef90d6209f712a085429015e46ba3d9bbc1b2e5687e502c. 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/QMRB31300034.
Jesus, Lover of My Soul (Arr. J. Applonie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b7279b098848199927607f75eb71b6f20b0f2d61f318838bd4b6c97ec76bc6. 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/QMRB31300036.
Ain't No Grave Can Hold My Body Down (Arr. P. Caldwell & S. Ivory)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adcd3089794cfba98413c52a051f3c5d84f97562fb7be1fe543641a39d72ceb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QMRB31300040.
Messiah College Concert Choir: Like A River
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d57bde1754a8d7c1e417d1b9c1741c67cec2e871c3d34a6e2fa31abfcc8f81. 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/USVZX1212409.
Let the River Run (arr. C.H. Johnson for choir and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc4636cdfa85a34da7fede4a73f12ff3637740f70e4d3bae8445b017b6abb2d. 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/USVZX1321511.
2012 Texas Music Educators Association (TMEA): Andrews High School A Cappella Women's Choir
2012 Florida Music Educators Association (FMEA): All-State Men's Chorus & All-State Women's Chorus