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 0xe00ac5b101203db931c31cc71ea6d70d69db6cfb2fb013ba3ebcbcd06f69899a. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7f250bf-8c67-4c2a-b0c4-fc62e640816d.json and https://artists.proofprofile.net/proofs/artist/a7f250bf-8c67-4c2a-b0c4-fc62e640816d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tribute to Jabaru: A Call For Your Mental Health
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 0xab24b18fdb6aa586dabb271464de3dc0801850496eee1850b91e4dd203dd7ae5. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/UKN6K2401645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed1af6afadf492db0da6741d0861af87e28ad5cb076a14c7cfb2f844369b05b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/UKFTL1600317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de9ae9b6c353ae6b6cd5e07fe2fad93ea5c89df2dd8773b413d73c0bb37a771. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEAR42460528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a1e548cd5d9f80ef29419c0d919468379eae20694fbb4d8be3586531ef3407. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GB8KE2403035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2547c0020310283772bcfd2725d2acd267803737c0a3e7a8ae0acbe266cab2a. 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/GB8KE2403036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a36e85085a38e1e8bd9465470e764c82719b6fde15b57fd3cd415a2adc35e06. 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/GB8KE2403031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b8d404e66afc50cb6997e01ccdecad87292e046c37eba1b65997a49e691c79. 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/GB8KE2310011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a5487eff6dd7b6b3082d7e02f460ce9ef99ef76f0c6d9418a13c2b7db90916. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/UKN6K2401643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd956852746b7eca7ba7be7c645b7c0352ff108e9301eb0ab66908efc4eb9541. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/UKN6K2401644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab24b18fdb6aa586dabb271464de3dc0801850496eee1850b91e4dd203dd7ae5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UKN6K2401645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e637d1de3fb1bd1cd576a6c5ea8ca77727af787f6598655c9f72ffe63c4cba. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/UKN6K2401646.
Yamatai Presents: Legends Vol. 1 - Kintaro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dd2fa8e620cf43bd63fe0f0e647acb94700b5c576495ec73c05affed426c0f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM42K2199322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e91fb3055e0ff611ea5381498619a0a756250203b6a9fe7b3b0cbb77aa0326. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZKDK2157311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76da85e8f794a8a43a7b6a0f2ed02a562ee383eb3969f3c70b6ec2de50e73910. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/NLCK41096882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a14362a4037ff477da98f7f5b542fa33c04fb7c028084e60b18e6f52bfcfd2. 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/GB8KE2200310.