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 0xc9e8bd377bb709ce89a0baf5a67da4a45833744635a3df2f6092d6cc3c51cd20. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/244d23e8-10a9-448d-9e98-b6a7160bab30.json and https://artists.proofprofile.net/proofs/artist/244d23e8-10a9-448d-9e98-b6a7160bab30.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 0x212166ba01d6b9b0dc7d8112f22f5ee51d745ba0083c6976a4f61199ed8a6293. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAZ2353963.
M4SSK1LL_EVERYDAY (DOUBLEFOUR & E9 PROD.)
STEEL19.KNIFE04.SONG95. (DOUBLEFOUR & MASON MANSON PROD.)
UNKNOWNINTERFERENCE (SINISTER_OFFENSIVE (DOUBLEFOUR & MUD PROD.).mp3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf196974e6dc770a699a53a35a240eefaeffac7d38c7c29b2eaccf076df37ea86. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZTAZ2362689.
BLESSED_MURDERS (TRIPLESIXDELETE & SLXNDXR PROD.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4291da9c5c48e7db016911426e0ae45f813f76702cbed8c4f57c6223f5acaaf5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAZ2354439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145a5ae6ae7fed5c7c4109c5f236757da12baf62646d8d28db1273415df2b261. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZTAZ2357365.
731.CORPSES.KINDOM (SELFFROMENDTEETH PROD.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda02adb3d674cfea985a5972172b6631de5580467237dea5e95fe1657cdc98a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAZ2357369.
MY COAT MADE FROM CORPSES SKIN (SELFFROMENDTEETH PROD.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a07e1e0a4f2f542c11ee303db51f45e8437354ebbf90bf0d1691efb21f0446b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTB32322004.
(CRUELTY SECTA OF BLIND WITCH (DOUBLEFOUR & GRADEN PROD.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a6024a8e75df5051ab711edb326dae6deb3e616dd63d029ee571496df481d9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32327238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc931227acacf201a7e277ea00e9703a582998432678a3aa33a6ff698582c5b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB72366541.
RECYCLING OF PEOPLE (SELFFROMENDTEETH & ME PROD.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6915ba1ce8582e86a777db93d6226287260f5141a589dc348d7a3ca74105c4. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTB92371741.
SERIAL MURDERS EPIDEMIC (ROTTINGTHREADS PROD.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9358158f0d1c71d217e08b3b767fce1c6038318fc6add7679a164a198f657f73. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZTBF2394645.
HELLISH SERENADE OF ULTRAVIOLENCE (ROTTINGTHREADS PROD.)
PSYCHOPATHIC NIGHTMARE (ROTTINGTHREADS PROD.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6aaa3e67f8fb0617ae240748dd81b53d0b96130338627cf6c92dabb209db65. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZWFN2307055.
TEMPLE OF DARKNET (ROTTINGTHREATS PROD.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3ac5869f950f70b0a91db0faf99c376ab4817d05e03adc3e77acc5ecd1877c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFP2365273.