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 0xaa2a8ed0b1d706a0f06e9234e6cd2785d5a38491f0c4990bf3ade1f76941ae66. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dffd10dc-0c07-4884-89f2-b6114b1f940c.json and https://artists.proofprofile.net/proofs/artist/dffd10dc-0c07-4884-89f2-b6114b1f940c.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 0x0ffe79f7660867a18235affd7313aa8714928de8550814577fd925538e425862. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QMFG71300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce60980f226e4357a6dc01f75ee66d016009eb0d16a5b5ed39e4bcf4940d5fd6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMFG71300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46e83fe72bc4baf3bb1b0e18d991464bd78199b0a674395c10b7627ac2e4fae. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QMFG71300004.
The Lil' Smokies (Live New Year's Eve 2013)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1a402bca21f94e3ca0f0cc905ec11dbea68526db1d901297f73d3a5b61cd54. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USA6B1712401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a2f428e04abf0cac1a8c69c43a60b260ffe08b0b29b9ce04ca2b9f727e1502. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USA6B1712402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39fcd70b645f28ad1971714c0490ce7c9cc9004b0d3bb44f82a892e00e5c9bb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USA6B1712403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bec5993755ab55db87035c0b01c07ee4f647456199300737f29a9c95db253f1. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USA6B1712404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1279724083998349a6eaaa2855d68fbd473a9c2184f2ce417686018b076059fe. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USA6B1712405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf426f0300ce1cdf4e6f05297055e714e0d4133ce3acb51f8bf46007ea5ee7d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USA6B1712406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7775553300ee6fd78b65037f469bea0ba09e57fda4dc2a7f88228f4e839058f8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USA6B1712409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f8c21faabc7ed4abcbda9d9390d10ebb916e48a149a984916403cbd1720c12. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USA6B1813701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69b7c77c5dcd406a8115a2bdca032043341b599447b86c01c85504bcf50df23. 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/USA6B1813801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39c2cc7fd0216322bece1c233d4de23989e94cc2cd781e56808c91ef3b60943. 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/USA6B1814101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523b20f9497dec092d7ae02faef9be7f12b4f96beaea29b760b38b00fde28bee. 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/USA6B1814201.
Mending the Fence - Live at the Bluebird
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84a6935c49014b15bd19a6f83247b2fd98e44d233dc2a31ec3836da59efe6c1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA6B1914301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab7cb21e7d9af9156a3df3c50eb11f26bcdcbfb329aff1ece80b3be7234dd8c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA6B1914302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd10ef1ca0893a6f1b0f3a765b41daffe9b52ce9aa2bb4ee99de8c8025fecf3d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USA6B1914305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d677d8198152a294119eba10a2b0d0f71c3883cbec83f124dbab6b695c0c8b6. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USA6B1914308.
High as a Georgia Pine - Live at the Bluebird
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb8e6a1eccf51f4b2ff9ecfa252867e4a797865a9a766f913a5ba5727a8c9fc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USA6B1914309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a7afa322479a624eefa0a1ab2fd7d153dd620e856a9d68512c0cb5d3002ce4. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USA6B1914310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db1d039e1e6e0947129cee6faa15b8ad497e583c5e68e3f21e8e5adc0f292e6. 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/USA6B1914311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc093b3ef278045d34b39cd415c6801c70715dc0869c5bffb9ddf6603f95bc2b6. 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/USA6B1914312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaffe65c4ffb56616a74a7b0c095aa1545e20d0f397fca3dc447ab5b7a7fd96e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USA6B2014402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd80ca63a76452f70bd77881f03118ba4f32e12bb85212dbe4f4b795a457605. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA6B2014404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e4049b0bf3bf76daee188767276ce7cc5d38b037a12781cef0cbb389264ee5. 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/USA6B2014405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bfe7a6224648f090a23318d42bc8886e86f0e9a974a15868caa4b2133a6c57. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/USA6B2014406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4561b03548ae0349014033259dfca4c835d7a3c9b48ab4b68fe18f3a3c3a20b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USA6B2014407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fb03eed980f83aca336dfa0a356491075ba129131b1d74a784a0e47b554816. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USA6B2014408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2f5109a1808240822281e53b48c418b550b1af724f43bd10fb39f2b5438fcf. 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/QZTB52204228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b683495deef4e65b24b19ea936222264987b90b0a492a7461fc47e62fc11872. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P2500863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c76b2e8d0776d430434718282fb22dbd24c82f791ac0379fa007ec02a37fc5a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USA2P2500861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b683495deef4e65b24b19ea936222264987b90b0a492a7461fc47e62fc11872. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USA2P2500863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09c095363c2e7f6ef9fc74b36a24498502b5014ea18b6fcb8cafe5c919bbe9c. 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/USA2P2500859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43ad3f4506a34ee3dedc22ac92adb05e76b9cdaf918682361f7becf7db9a71c. 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/USA2P2500860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcd85f474ef4da44806ec1becd7c0964d38f2fce44540bed4dd0952cf21308e. 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/USA2P2500864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f8605b2ed99482641b7e1048f5b02a1459de78e25d6aea20a02e61067cd93c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USA2P2500866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d33f07ff879c0061910c5fb46586dc6ff8c16f87458882fd6124a31360c3755. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USA2P2500867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72481dd752ebe9c9050e3e7f0a7d8af85feb9def7bda89b395744454edc7a2a9. 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/USA2P2500868.