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 0xe4a1ff946951ea8aa8f36e3534333b8805d5015e249aeacbe35b9962cd7098b3. Chain 2 (Bitcoin): anchored in block 953662 (2026-06-14T17:28:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55f62d3e-22a3-418b-ba72-219a40c41a1f.json and https://artists.proofprofile.net/proofs/artist/55f62d3e-22a3-418b-ba72-219a40c41a1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jangan Bersandiwara (POP INDONESIA TIMUR)
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 0x99a070fb386fe21a31cc283d058bb38d2b78b2b2cda760e663db673157e7d292. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:17Z), 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/QZZ972341504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b98d05d2c8625f038b842d2aecd50e1eb80d2c7931aee3c9018a5ff9a61f8fa. 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/ESA122464219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc270c25e8dc43c4e850cbc966413193949b549881c422cfbad7ae82ed71865b4. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:05:53Z), 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/ESA122469935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2379b4718febf4a5717fb876b3c002497a29775b5db2e4b1606be84511a4cd49. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ESA012460408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efd7845da55e020086e9fe0074ff3a29b48cc252c907df9ea613362bc03eb1a. 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/ESA012573979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23260a7ca1119ae1b540a10b46e25883436438b7c10e060c436cf14d12bb9de. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWDW2554758.