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 0x8babd8a13c587f3762590d400c1b9578516b5e55d234a12602c9eabf6024865c. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d59c9b26-1d93-42ea-999c-73dce0da8611.json and https://artists.proofprofile.net/proofs/artist/d59c9b26-1d93-42ea-999c-73dce0da8611.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x54ca3072b931f3e8409a191d01f26815992db958a5dd45749ca44abc325fcb5c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEXH2400044 — a six-check JSON result.
Feel The Love Go - Whatever/Whatever Remix by Justin Strauss & Bryan Mette
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b9307af7d5cd00e001e600a623a4c5ba1c2b7d08480717e94189012edd8c3f. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCEL1800177 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906f425b8289415e717ec089e9a3f1492e6128ae239c480fb2560890814d5202. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEXH2400043 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91c3f874bf7650cfa7654f4126a23e4c86ad0e70ba124f06f401d0f663432c3. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEXH2300041 — a six-check JSON result.
Night Service - Whatever/Whatever Night Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5d7517836d1c7e7cc4ed0a167f40d662b03aef5f18fc5900173710a7352087. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB5P51900284 — a six-check JSON result.
Night Service - Whatever/Whatever Day Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d356442c180a1abb008c1682722861873bf5ceb82e0a3b4b038df54c5f7f4f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB5P51900285 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6a40a95282c05873b6c9707e7bbcbd928585484610267d8f2cb3a460eea965. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBCEL1400162 — a six-check JSON result.
Moth to the Flame - Whatever/Whatever Remix
Moth to the Flame (Whatever/Whatever Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f680b456ea76c50e61e5b0d974d86bf26ef86a859065f7c0629cc01cdd6cb6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11603537 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91c3f874bf7650cfa7654f4126a23e4c86ad0e70ba124f06f401d0f663432c3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBEXH2300041 — a six-check JSON result.
American Science - Chemical Reaction Mix; 1999 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50870563b3d76407e11d5374d1ae96759554b9f154affdc39250074585fbd652. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYE9802248 — a six-check JSON result.
American Science - Chemical Reaction Mix; 2010 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a751ddb87b7648671deb9145dc9a9378e2bc650fde4a79d5d6cfa77890ea6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYE1000365 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f7059190b9c89ce412789a14305848d334a1ff17e50dcf0366f968f63690ef. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLB11310080 — a six-check JSON result.
Never Saw It Coming - Justin Strauss Remix
Never Saw It Coming (Justin Strauss Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879b00c8266bae70bf2ff3b2cd708111bcd7f2e277bbbd863e18de81fc4eb33a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4GE1900012 — a six-check JSON result.
A Little Respect - 12" House Mix; 2009 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118b3f1acdcab340db3bb54bd567527fe2a3fb6e8dfc020d7b1f3ca555fc25d6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJH0900830 — a six-check JSON result.
American Science - Meltdown Dub; 2010 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84f3570705b0e5bc060966b7aead2462008c609fdb7873bfca674d9bea095c7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYE1000388 — a six-check JSON result.