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 0x83d356956f66a247620a7e282ef30a2e472b15530864c4f5857193391062bcdc. 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/ee057d8b-1e94-499c-bc20-89d2272ade38.json and https://artists.proofprofile.net/proofs/artist/ee057d8b-1e94-499c-bc20-89d2272ade38.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 0x5b53b86aea5c497a0bafe4127b02a18cd2e3cc34bbfb75d1228b549a4d3ae818. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/DELJ81740550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f6fe7e789898d7ce6050b53643146103a223c3067b7c2dd7639d9590bb1b7a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:30:39Z), 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/DELJ81740551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5644e4d4616ec26f5a841cbdf278d7e29be51f6138cde727ae29905077a328b7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DELJ81740552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723332ac2765741eb49377810a41c41696d3685a32517d490f1ff800b5fbfa6a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:41Z), 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/DELJ81740555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e23da55525490a202e7cd6fe3a0b0168bc13d2fdea4526e0d764aa5c705a5. 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/DELJ81740556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9220e53998044b1bce67af996cedca195cfedd06df1ea868078fcd76637baed2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DELJ81897070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438d7eb318ee99f4b88cdb56022e48c2854af7a4374e9b3ce9e990f58f1639d8. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:38:56Z), 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/DELJ81818310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e76aa381dc78c285936ebfee5d5cb645a933453a83781ba1d10a978d21499f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DELJ81818312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6ade5035ab77c59bd3e8c358cfff09ffa70e48e98cb94e461763968cb87adc. 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/DELJ81903391.
Why Didn't You Answer My 45 Phone Calls?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ec69afdd4b9b652ae0eb337c2f5bc6600418d268357c3e1cab763cb94a7baf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DELJ81903393.
Chapter 3: It's Thursday Already I Should Go Home
Chapter 3: It's thursday already I should go home
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6168393eb216b5ea92135731dc542169a132c58850039f68fda3722d7fdfebb8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEXY52200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4f2dd0aaedd7461992948151adb6a4a3698d05d48f0d1551946611bd4ad8c0. 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/CH7812417579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed6e0081c02e4c9fbdb12f13df4840d1f7d90be980ec1c98cb56c6379972996. 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/CH7811924362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a31591b0e78b1984d4560eb3dba484ac223b8225470b7d87ba34907c4e1c92. 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/DEVY82000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23014a44df79b400ba97fb5394bcc888abfd7762aaa5edce988ff9f4b4ac7f03. 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/DEUM72100703.