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 0x9361fcde2e1bd337d3d318c6f8841378e4473f646b0b0757ff0042dbece1f96b. 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/06122b87-b66f-444e-9362-66e0fe81a51c.json and https://artists.proofprofile.net/proofs/artist/06122b87-b66f-444e-9362-66e0fe81a51c.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 0x674c28635bafee37d2c176364224f5d776e8390c3757bf416289a00ec58cfafc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DGA062067675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f80fe39f7b3e7b6df930fb88d3ccae49da607231e4eb96f0c6acdb9d69d012. 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/DGA062067676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eb033c147becec10ba2be0f519db79d1188e4d2abe1a4dfde5f180c51dafac. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DGA062067677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb719979bf94beb64467dc78ab2f1614801e847566bc6c0db32d0d58636f6c5a. 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/DGA062067678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f41e016ebc0d5ce7901d6784bd5ebfe802e0955241b1f11b90b802a6cf3953. 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/DGA062067679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62e44adae6f88a33596764741baf9f0d679ae5df3fbaf3b0157be362fedaf68. 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/DGA062067680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f5eae7791984d67c77c83e8907285f3e2ea3eeefc14117d37b9017b191d5db. 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/DGA062067681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac7225694b8aa912c7465469331cb3a34f7ed609c1fcdf63afea145949b469d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DGA062067682.
Love & Light - Awkward Corners Life & Death Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d38d0754c032b96b5d1236912ff5595e3bb01e028b73e500bc1f7901afbcaff. 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/FRX202131650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a5b1e6f177ea760557996d2c5164182aadbcbbd707c2dc95f67db07f7c01ba. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DGA072144590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbe9df00d0dfbbc8d38a759adb364c4b5309d0da675def19cd2e46a884add58. 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/DGA062022077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7a98187c1184fc2cb364d0c17de65d02e1bbaf3571e9535a8c3165a356468f. 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/DGA052032593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72631e5d193bfc79e553c1819a0c384f41892f6edc66d95ed3b347e0550fcb6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBNCZ0600195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1046ccd9881484f2ae506e28e537a326e6b54a91a0d884463211d3f41e5c7b07. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBNCZ0600196.
Wind, Sand and Stars - Jazz Chronicles Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f4be7b193676b5a7cb06a8ac2996ee6141bd1896e035f3c48963efbcb3ea14. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBNCZ0600197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ea74993680e87a77ea6ea0302f546f4bb6267c0ab18355310f2af820f51199. 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/GBNCZ0600198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5ae4945de247387e5cd4b34365e2ce79c9df164c06e7e108e4c7cefb01b86a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBNCZ0600199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42273b3f589ac018369c32a78bbaffb8cb5320cf6259f92a0fe877c44e05eb66. 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/GBNCZ0600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7da1051b0e6d548cd753ad601367e722ce59ef1251e627fbf11880325473656. 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/GBNCZ0600200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522fc29f3e7b47a45336d95dc36284d16bb38f1cf7d17f9c1b2a91cdf30aabfb. 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/GBNCZ0600201.
We Travel the Spacebeats - Soundspecies Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0700943731a86e1221bc5bcc58bf88389e474de2246b2be6b769ae3b1a80baf9. 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/GBNCZ0600202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cad13e45241cd7ba81d53d7fb9d444fc061f4da3e8d8c77eded5061b14f5a1. 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/GBNCZ0600203.
If Music Presents: You Need This: If Music is 20 Compiled by Jean-Claude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b5faaa67619d3bd1843b2fe2bda229cc20afc790f42698a507e47c57b3c457. 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/DK6Y21500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775f01887fe1d6aa5638b4e6eadc9efc59fbc686d930c4d9ab51c7368257c172. 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/GBEQT2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a46d7d4e7fc20ab627651ee4d225879182776e1594b4d6454caf61adcd0ec6. 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/GBNCZ0600138.