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 0x30334c1979aee091f02fd9e6b874a44508c72493ea081058c195166003d32fc0. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef7ec740-ee2a-4434-bf89-3ded1cf5d37f.json and https://artists.proofprofile.net/proofs/artist/ef7ec740-ee2a-4434-bf89-3ded1cf5d37f.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 0x5c21a7f652dbed0866772893771cf3a9fa4c7df3b80dd89e3c33b589592208ab. 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/GBKQU2326600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9cc71e1c2b8bd0a1db701316aa9ac61351be7c79d56959b4ba6efdec2fa543. 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/DECY51901784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd66df08212482686ae8fd8855ce66d27be037769c8b78b93979fa044320281. 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/GB7EJ1401308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32e7293269ae81ca38d6988b540636efb8df15313c583939a324230f2f6bf7c. 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/GB7EJ1401310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa48424fa774d6f76879d22abb2cc978d6dfa1ed27aee1640cbf305596a2560. 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/GB7EJ1401312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ca47af520ccd1f96d43b6f99c55f673d9fbe16de638d093145461725bf5fca. 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/GB7EJ1401314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d8a399bedd88336de97969097f961596019f5b722759f086572ebcb1c52b65. 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/GB7EJ1401325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cca99e462ec4043cd80bc466d22c83485b60b3c48b8e0ae143840e19d5125c3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB7EJ1401326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ce2ff584714d9bd9162d1b1e1abb2e4b41f4e4032c761cf0f6b906250b1808. 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/GB7EJ1401327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93385be67208ff96856d64c0bd1b575beff8fceb5c6c89b3efb8b0e0e969cf16. 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/GB7EJ1401333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bcda470829e2a22b9aa090466bd3d929cb4f1c21ac822b9af1653164001ea7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GB7EJ1500679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d3aeb7538732139c36bacd0007e15cbe23e4cec0d0f0f7d74335bef95f94a6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB7EJ1500680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285acb8a40e152cb55df31ee275e1118f57c8bf2e59815f42a9ca4977560ebe3. 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/GB7EJ1500683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eddcfc1b58689b4d5686b309d030946adc57c071722ad7f22bbe1933c246630. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB7EJ1500692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d89d0a22094e953107b17ddcfb84623484ad0111ee6f4a0675c254219d97c27. 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/GB7EJ1500705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3fabdd0fc7b559364541697816fc0ed63584d3f7a86c0b5c4706dea063a1b3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2151891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9fd2570ea90ca3ee2b1c714376f1739b7a9af841bd4cc5aaba9cc99d2a3b98. 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/GBKQU2151894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5294b1c1f0b5ae742346a688a47feeb25c2173d9a4014cb694aa0d3da783919a. 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/GBKQU2278126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b9c0fcc1f897846f31257c488f38e97740d0401466e246959981d34483f855. 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/GBKQU2278133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d904a5e43ff3060e6ffc849c80cc872330e5491778850aa71f810c09dade53b. 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/GBKQU2121373.
Nothing But... Funky House Selections, Vol. 13