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 0x97e820c8859f1cd9cc84af8e18d858eb798a82935c7f03aeb392a70676ebff0a. 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/521c1062-3f6c-4432-bb9d-d070f3e46f30.json and https://artists.proofprofile.net/proofs/artist/521c1062-3f6c-4432-bb9d-d070f3e46f30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Little Jailhorse Mysterium (Strikes Back)
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 0xead81c117ef99dddfd6af53a9beb8a0d8522f0596a9e679338a94d700653f2d6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR41174389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc8db687994d60f977c3f8598826d773d4129526dd3fce500b40fb9a9aa4efe. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR6V81581256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f97337769513009cd7bd4d70bbeee3dce28529ccbbb71b47ace70d3cc8c24f8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:30Z), 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/CA5KR1702394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042144489763de74e917177d08a8c26fb5ab45006388901fe3e7be713951afe. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEH742008370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cc81603660b1f3784d3d62ca2ed0aefd41ba639c4200f71a5ae430624f07b3. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DEH742048111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e04f97f9cfe109b4b282db07d83bb142b2c39f9cdae711fe64586bc6f20f8a. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/DEH742207927.
Nightmare (Sebastian Groth's Power Up Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff92cf6a36d13c89deaa7f02b7a4922b254385da8f0c8056a4662b93f97e5f11. 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/DEH742505023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c48aa9970cd36bbdaac89c93495f1f3d23844d6edea09fef32cad5239762f8a. 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/DEH742520310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a5eab90e16700b0bf73a4807697707fb9807a1ca15bae5e48a5ab9d524324f. 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/DEH742048103.