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 0xc486872bfdb6a5bf023903ad3f10f9dc4dc064e17302a7c81a99302f90a680ed. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/797db3d8-9c59-4858-92f0-c0bf8359e0eb.json and https://artists.proofprofile.net/proofs/artist/797db3d8-9c59-4858-92f0-c0bf8359e0eb.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 0x83ed09a05c877d978dfaca5934a67a3b3e40371b3e1e69f0da2b0a84f450d8d2. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPE561200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9320aabe3717871293330f5c133ab0f559d6e7862e2fe08c8725a38dac2508f6. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:38:32Z), 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/JPE561200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c67c3a3e3a440baa892df9e5b14edb1916bbc2c779d5787cdfc36200726739. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:47:33Z), 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/JPE561116524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507d06912b8db1a30f5ebc273c1b65d2a92765aaa5fce6394411c1a10f7ba182. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:28:38Z), 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/JPE561116525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76a7f98095a415e4589d480f7b66d6a304393041937ebe70d9d0dc65c416f84. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/JPE561116533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7627305741ac2c9c36175bedfd9d58b75163195033602e3f87fa70c229f7431. 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/JPE561200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c41ec729f3fc49b8a7d375a293f605733c61d77c9d60d1b9d8e9d1bcd86ea1d. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/JPE561200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a53e54e6162ef459f8799bfbfed45e59c2d4c0f9ba4ae675431d834f94ae35. 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/JPE561300923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4863bdae65afb576937959f67f539dfbcdb05c23d918faf2602d825b50e3466b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/JPE561300932.