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 0x4c2f2785f5de078f3f821f539e3f799ba5f620339b42ef5d0755de79630036df. 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/87dbd301-e193-4569-9670-e79c13fb4b60.json and https://artists.proofprofile.net/proofs/artist/87dbd301-e193-4569-9670-e79c13fb4b60.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 0x47315dd2063c51aa880356ca8eeba23157fb00a1dd37e1ffa651dc0cd56d4911. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ZAA011500143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ff1fbfe6f345831026ee10a9e6a86af1b5f756cb97be0037b8d9fde5ddd62e. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/ZAA011600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4590f407bf44fbab50b888f1bddefea62da58af3c9af269041b02e99233da2f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ZAA011700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823a5ad87ff3870c9916f0eab41e4e6760c2741917d661b89541e761b366426a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:43Z), 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/ZAA011700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a20f341adb0ba1abc959af9bb86ea44c542ad4d00052fc47e5094eb433626be. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:05:16Z), 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/ZAA011700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0c3227c471d41bf32f640b55b7800c10f730f2a16632de2de227890d2170a8. 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/ZAA011700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa8ad951b0406798f590d54dd0a2106bd3ff13f7856a4a4fbcd306647e06b5e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:27Z), 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/ZAA011700020.
Making Love Out of Nothing At All (Live at The Shack, Pretoria, 2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b052fb6dd6e728f9debb3ce97cb2d9b7339824404b727b3246ccd33c130d10. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/ZAA011700261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6b131e1cb68b3e847e15661b38ded67c2903ac45ac32eb39da916aa1a6acf4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNWT2394672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5369116b1105c942b446a3fc22260854b8f84bc280c2e77125a09495ccc05f0f. 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/ZAA011700372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a37959d16612cc6adae9fcc2f5484acf3baab2e5e3f389a41a944c74759ab1e. 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/ZAA012400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d85d6214d7917d867f3989164ae80ac1f826836a83b12eb40b0f4579ff69a3. 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/ZAA012400366.
Trustfall Into Your Beautiful Things Medley - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50a0f38628bd210e7f2458cd7909f88e9f3bf55ab4dd2a600d9803b6928278c. 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/ZAA012400367.
All The Small Punkrock Things Medley - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fc72c08dcd676e672428d68cf7612c426bc5fc59678257f9ec1a9932f681dc. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ZAA012400369.