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 0x9f3c974b26d4d0e5839ec473a8e08e19fafbe5e4be7ea4123762cf8359204d0d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8de9e36-63ea-4df7-9bfc-34e4f4582440.json and https://artists.proofprofile.net/proofs/artist/a8de9e36-63ea-4df7-9bfc-34e4f4582440.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trumpets Sound, Voices Ring: A Joyous Christmas
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 0xa831f190e6836a00e18e03acc6e653dbd897f62c0e3ce68df932c0e7b6d9642c. 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/USAR29401031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb0f554080d5f7e440fb940338c5f765a4c4f8c56bbf2b13de6d915f1ea7406. 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/USAR29401038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f443158cecb23e6cb35d8d9fbe40b9004fcdc186780d0ea23ae153ced8a562d. 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/USAR29401040.
God Be With You Till We Meet Again - Randolph
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b0186aaf864d1fd271ac5cb7cede6f1338785f8d8407ce5ec05fc3c7d582bf. 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/USAR29401046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41af8822850a0b14812261cc6aa242a2fcb195526b925ad2e0ddbb48634cd340. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USAR29401032.
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 0x61e1f996cb47c1df03ab89e019862d549d33f4ab0b6c8e3034b29e65ef28a1fd. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USAR29401043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c7e0d6185ce1cd1d011ebc9a4616ca0d050686935ee27ed2d2004f7cbff837. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USAR29401044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e493e8c5f964b7f9066ce82b9b646f6fa0859f28c75cb452b8b2ddf1ed81e2d. 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/USAR29601008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceab2fb2e42ca26e718ae87f0381e9755f2178896315b996648dec4142995c48. 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/USAR29601009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e08866c583c65849e2686e64207d40b6a681b0788d09cfca0136a906d36ae5. 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/USAR29601010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5b1d40f6ea74460ad24621695d92e2703927f4fc4ff9b57bb77d22aae2f1d5. 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/USAR29601012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456b2ad1f8d0aaa6a9dd2d2a1921ad70154a306d007bfa409ef16a440d70385f. 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/USAR29601007.
O Holy Night (Cantique De Noel) (Arr. Rutter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a217611ab70009a5b8a2e2813e8e7d87776dcca8eb7ad98024496ce19eebc8d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USAR29601013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c9f23a9677afbf516cd77ac007b9856b2131fc19c0c292a1c250019684a14. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ1963538.
Voices of Angels - Christmas Favorites from the American Boychoir
Voices of Angels (Christmas Favorites from the American Boychoir)
Journey On....Passport to a World of Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8848885687180fb77a0bceae2d96620f38b3ad33923dee51d5371d70a6e4b4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:48:23Z), 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/QZFYZ1976254.
2011 Texas Music Educators Association (TMEA): American Boychoir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bbb35c9e2bc2ea04eb661f60bc291770af79bd41acf40b357ab2fdd1b820a2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USZPQ1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76a03ab8ab2c05685963288be6cc9866303c7aad3cff64bc65e24bad700f714. 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/USZPQ1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d9cacb1e7f7af5e977939275183ae9d47b44d5c52f18069417cca1c366a54c. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USZPQ1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34639c0a44d09a058e8ab3febf4e4b14e2aaca65657ae04e593f09c2e449f90. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USZPQ1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc766ef8094c0cf2ef656ff019c8614043642da58d305473fd264ea34939167. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USZPQ1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077b82b1f7e01c262e41f461648ff92892dbd3e3c2328c9603e0d573927604d8. 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/USZPQ1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7873be44cd22ec74d82ab12ca03f3a89c1441ca50b518bbab91a8575c86e69ba. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USZPQ1300015.
Boychoir (Music From The Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2923eafe9c54905570ca85a81caad385d277ca76d3bebd3614de23d1a6b8fa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USRE11500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249c8e0ef8fd4cec83b2dcc16708762240b86021fa6c72ce9c2446b15c61c09b. 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/USRE11500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dcf58fc3d32d74339ee24f5c2aea324caefbbb669a70078015c5eb1745440e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USRE11500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e26d47e0b69abbe5777dc204eb788a47c431850ca4b6a16e2906fb83046f65. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USRE11500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad034a42f07281842fff922a957dbf0431a65eaa11daaf0b1f8bc98b7b69e3d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USRE11500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b69bc62276d73d3b2dc863253c3baa2789ec6267d3cc931131400ef4552af9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USRE11500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b60d951032686cf2dddc8793d92c1054760ba6fd9febb102e569be7ab2d822. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRE11500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f8157a828f9e54230e29df7e1689682224b8913913581d020518a57fe1710. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USRE11500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e24f5d0b15cbb257ea279f204f77b3c3f11feccf93e1b9181eca9f0e47ba127. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USRE11500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a408f562edce00b8ed9dc3e5d9a1a7cc7e720fc65b439bc1b893ce05dfa4fe. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:42Z), 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/USRE11500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017f0b874c14989d32238d59be154ef2a8f7adaa5f6028d6af0d8eae8edeaf72. 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/USRE11500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847762a9f7d793f94ed494a2dbb5dafddf6401a95a14b6fc03dfcc1ba4b387d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRE11500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bd7cf80148c937077e880b5c599062987b2dfaa39fd73898f281b28250d869. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USRE11500042.
Symphony No. 8 in E-Flat Major - "Symphony of a Thousand" / Pt. 2: "Alles Vergängliche" - Live
Mahler: Symphony No. 8 in E-Flat Major - "Symphony of a Thousand" / Pt. 2: "Alles Vergängliche" (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0ba07c75cd3d932b8db20415baea5a58b4ffff218a56acba8febd0ea3a52e1. 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/DEN961831032.