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 0x56c10e97bcb99f6d6031a762976a86a4b929ed86e25f83b9e87504c03f003d3e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c2458dc-248e-4611-88eb-3cb4e0cd7a12.json and https://artists.proofprofile.net/proofs/artist/1c2458dc-248e-4611-88eb-3cb4e0cd7a12.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 0x0840735a237453e32cada6d1a6550b5f9a95e5d05a11f8534a2c70431045121b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZHN72194231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b675cd1f6d258c9e2de48a81f8cccdec2048c5976819089086b2a3f1fade813. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNB2163798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc00c9a57a0aeea4ca37057465cf209807c25223529d4840e8799e6257ea2cb. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZFYX2266554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0df650565421dc165e3319c0e51f093ef3ff8d3d4db92fd4b438270efeda99. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZK6K2189756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee58051f8fd5a64837db534df84b51220249e8e00c0e28647337671dee2d127. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZFYX2266557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f612b83d970f991a09407169f4fb041be6c13896bbc7ae499e0e37ad40557f9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYZ2201681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7b616db328d44303b128638e0707edb79a2b8eddaf1410af6de4508a93a298. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/ZAUM72300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257502737a2f92ed6a11893b44f3a8d83ad8e24549de24404df82e0e9843405b. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEY472473909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257502737a2f92ed6a11893b44f3a8d83ad8e24549de24404df82e0e9843405b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEY472473909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d487bd754dda87f23313c50dcb345c100cb07e3cda2736405aca5b6ad56acd0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ZA40S2401797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d13b9f52606f5fca16dc056cf7452302a36093dcf417c1436ed9f4b541f5f8. 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/GBMA22438700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6359e8e452bbe48aad9a7e21fc3fa96a42f9236036f392d9c2f28de2869a985b. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/ZBN1K2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d961f45091541cf253fb1a8f8008089d699356c638eb83258f3a9f3c13cc02. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ZBN1K2200005.
Pink (feat. Scumie, XXC Legacy, Mbali The Real & King KY)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354d1a34908b8b8796aa8137e186a543cca412c64d0d8d5bf30fa5d26141343a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ZA40S2400726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db8a121a82b81ca542e0b5dc69d3fdb6ffcbd89b815fb1b428a600235231d36. 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/FR10S2593927.