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 0x09382a312a3475bd92ee088ee4564a4b054b06e55f1265fd0e96b0c81b75c6b7. 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/04510889-603c-4a2e-aec3-87efcb87b9e5.json and https://artists.proofprofile.net/proofs/artist/04510889-603c-4a2e-aec3-87efcb87b9e5.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 0x890797bbeb3cb7ac3f0100dec5a2f89d4c3b4bd45e64a7faa739e6c7a5b57d42. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:57:26Z), 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/QZFYX1934523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd382811d8fecf9bfe292ff5278114682958bdd157747188e7fc31c34c7803e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:32:10Z), 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/USDHM2107233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1608e856c9b7ab647beaca7012d27b895aee9eb48e0b74479c2a1095a9a8cf66. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USDHM2107234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424c907a88dfe263b0b22144ac20e7c4e40980a44331003f0ac0e10a417d06a4. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:25Z), 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/QZHN71941837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8beea96c65be41792c9003f16ebaa0c02913109c9861f494b3185925273d43b3. 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/QZHN71941840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49653b1bbd5f60fe4f19f49bb6c5fd68cbca2346f334b1c9853e0cee6fd31947. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN71941841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52785e2239f8389db412a820cd9d811a286e45745ae3bee3211d7f1d2f7ea3c9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN71941845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578fc2dcbaf90ff11522db4f2dcfebfdb5b8e5258517322f8ddf813d14b4113d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN71941846.
The Greatest Gift of All (Live & Electric at the Holiday Spectacular 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a0c67fe3fdb85cc30a78d0820d5beb2614efe447b43408a76ba8755a24010e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZES72021690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc19fa47f47bcdeb767dc6a48e3b5f912fccb0d901b9f7cb89afc1b616e5bea. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:41Z), 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/QZES72021694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2621b24b76af6853aaf023f8b8a99e3b174800357b8244a23dd4fb25979125fc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES72021695.
It's Amazing How Much Has Changed, and How Much Hasn't (Demos 2016-2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d841b405cd41035c96bae9e33d2741c94dba3dbc856e2d4ceb2432309e86d18. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMEM2031789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508c030f0dbea1f15bd9627675b62cf97cb994e86c6c4a39ed9959b0b45ec5cd. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZMEM2031790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02644be969fd89ec745547e667d5aa11d02ded5c57c980f0cbe39028b2a490c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZMEM2031791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7044727bfbfde71e74eedd2791c54f20f9025b0722a57e1120596f303740b6b9. 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/QZMEM2031792.
Girl in Rhinelander (Wingnut Dishwashers Union)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c913fd464c5d0f081ffaad1656e76b2da451fbc5df17dc3da5f11378fc4e937. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDHM2309237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b5bca7891b90b5f3511f39eea14a581300d8ac46eee0df4de6c3a56ed90ead. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM2309238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeef59b424ff20a22e18ac298d5529b753df9a6d49b405f4ae90ecfc0f66dc6. 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/USDHM2309239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef000b1e10edd16601ccf64386895f941276867c316ea6c1423286d4053d0eb. 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/USDHM2309240.