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 0xa92ba7c610f99f09fb688233c8bf784d94231feace816d93879e4251e114d36d. 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/089da441-a6b5-4356-afbf-3a822066de28.json and https://artists.proofprofile.net/proofs/artist/089da441-a6b5-4356-afbf-3a822066de28.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74079d2a59ac75da739f47d9039035b589503365836440774ff7b4e067664be8. 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/DGA072140506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262d7f6346daef885be0e23465faa09e377eb1077995f4c955be9b98ed2b0d3d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:43:06Z), 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/IDA642304711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f920b375aad5d190e5931978b2a05f76c5805500eaaf0c7f316da4b8e1a3c38. 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/IDA642304768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba1a10f8797f74c1905ad5a7b4ff923751e7768b27d82ce4f778bf57a81eb5c. 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/IDA642304868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4db0904b3205860d2a4d449259116967f1327103db05403e714b5c174a907f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IDA642405644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811a3f28e77dad0ca34acb5d1c148e8564a4b73816d2bb1e08abae933c3603c. 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/IDA642405677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6fbceafc19ee743883d35dc24466ebdaeb19ea0a92c07c55df439fb17d1870. 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/IDA642405723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a16ac16eb366620b0ed1cfe2306fa6c69b0018e4e3274f90f7ce1368b2b56e. 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/IDA642405858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8665d22009d2bdb16ef132e5dd037112d7816a2de6b7db0aee42485c23762f8c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/IDA642505913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336bb3606978efb81ed245e52dafdd57b94d3d0d2745fae1253c4737cddb828f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:56:00Z), 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/IDA642506042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5fbb6cbd8073fce065308c78024b235d28c4e28f6340b0b4b0da4e23013635. 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/IDA642506102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5ab728a04f750bec091af5e0dc9ad5d2a056effd28004b4e7ca4929c0950c6. 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/IDA642506168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d27e8314103223a55dc2ab9c4fa9c8b2bebb67dd5f59e15a4b9fc3f35e48b9. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:34:07Z), 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/IDA642506284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb5926dddee0e6d716d0ebd04d13900d4d171006f86b23aa5066fe1236f4e88. 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/IDA642506347.