thumb|right|210px|Cello Fury performing in 2013. Cello Fury is a chamber music rock group, established in October 2009 in Pittsburgh, Pennsylvania. The group consists of Nicole Myers (cello), Simon Cu
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 0x55ed5bb591ba62e919e75e15f04bae95e7149e611e560c1559ecba2b503f6a9c. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbe6290a-7583-4330-b3b1-b043233c586b.json and https://artists.proofprofile.net/proofs/artist/fbe6290a-7583-4330-b3b1-b043233c586b.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 0x84c3f1dfb67fedf7c8478e963a47d9b35c526bcb3259bb72c120ec599dd60f09. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/QMAAK1889948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c273387f9d9de7d9b2169cc8e3bf237e5d94a6a0216e463a51db504a85ba3e4. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QMAAK1889949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6d1feefde133ea4222b9f1b49f2c996df6ef9cd57247c35f6698831c34b387. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QMAAK1889950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea7fa3d570ceb6ff4078a98b338b76a5d9896a0a0c13618f228ae9213f8b9d2. 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/QMAAK1889951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8b62fe90935459fd82086949ae39de3f1fd675e56d71272c5cf80e5a92d9af. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMAAK1889952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa268f5784c62454d8b42dfaf0af190c553f257828f957f3febfd7c851f1ea554. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QMAAK1889953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bde795d7ee62cc03b62546cad333420c3c0193bf133aaa61245d5933aedd97. 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/QMAAK1889954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b4ca69383dde33856da1f6f91babf56c9f7c1fc8ff9c5b2e6a8a8ed184dbb0. 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/QMAAK1889955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2226ab46f37bfb28b178047471f87f466b5e075f191160d869afd598b0541c5. 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/QMAAK1889956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a18f77f6dcefa21a6a68f858cb4895891db0ec80ed3c6fde6bee39ca085de1. 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/QMAAK1889957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069a49716d65850147154719f433d95131d112fbbb255eb7a9abc88614a702fb. 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/USCGJ1300289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5b5eb082f1957b7f1665b77facc33fd1fc94d3ffaad624ca20a8e63f2da288. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGJ1300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65002742f2d8eea2bee54e432f0787cb6bbb10ebf73ab69955edd3504097974c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USCGJ1300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ab0703b1f5b9b5e605ca1b2fc7c8a0c1ac4da6c7d1c7c6001998bca9a507ad. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USCGJ1300292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4c03c7d76dfc5729b5b54b89869229cc17e3a07f84efe99361127a669fbaa7. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USCGJ1300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b09369c2f0ab2132c759b63570446292b01231230457d4f396938953104c379. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USCGJ1300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532f78000e9a944f40d78ae6ca643e060a73014838ae60467f15a7285f790340. 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/USCGJ1300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e8f7fca931939599d892a236da472c46e1c49beea60292c31b242268c1fa15. 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/USCGJ1300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a6eaf0f69453d984b62b337d206b98a4fb078882aa8366c4f8cf908be63145. 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/USCGJ1300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedc72b0ef20a2d512baf8cec9e548a517cdb18611a5d3d2caae4dce41d63528. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USCGJ1300298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf35f3312db76af86c06c818a6f37227ce026d604517c1b741d45497a2e57c6. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USCGJ1300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331bd1eae9cc00016304406377fef2539ff402b4f4b7c3da39a184a5489786af. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USCGJ1300300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a6fee2a211c7bed1a483cb89c3220c219fcf0c2fe5b9de6113f2744d34f515. 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/USCGJ1300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5ab8110555d60da71b4bb01ef7a25ff2a8b10d9959ed55d9a2809ee5987685. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGJ1300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f13c9c611216dd7e628380139688a24e19de178810c003aa47d93f49bcea47b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USCGH1159087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fb78ddc88943b5412525774718b7d7d719673acbd8c6ea7e4244b43d5b5b6e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USCGH1159088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119b60e295d4b21a764af56991c43d0a54a81a5c07be61cb34456cd8ec6867ad. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USCGH1159089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f43f1246cd827b61484b1851c3754576a6b597a8f25c8d4acbb5e3b9e65be66. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USCGH1159090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adf66756e9c5ee84f0fd4a50f5b32af749b222fdd34ce8dfc5bd649f7bc4825. 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/USCGH1159091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b8d6aec95f521e8b62f10903efff35a34f187193c067c7e1155ed1f6a30c6c. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USCGH1159092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73a6da3bef7d4db97e92d799357f958762ce632d23706ad671fd6869627d70d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USCGH1159093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521bf6a2da48baf2ebcfafc978b3a30bd468ae2cb7cffa5c04b14edb633a4125. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USCGH1159094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3f7cf75445bb4d9de90bd0fd5572c9dda7a9658af87d346848bbe2bc63b5d6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGH1159095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfce5992f5b551c5c2484a50f455c5bf446601c78fbf700b249b70604b56eb17. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USCGH1159096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09cd2506714bb8099cf2ba327f92e0fb6ac4e4c066107ddbc77d56d278c9a7b. 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/TCADZ1845957.