1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2ab907a3c3ae77e9d165b4ff3bdb26763ced1f833c20c5b7f8c0aac1dbc47512. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/460de76c-9e7e-4e93-9c74-6e45415f2012.json and https://artists.proofprofile.net/proofs/artist/460de76c-9e7e-4e93-9c74-6e45415f2012.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 → block OTSBitcoinBlock must exist at that height 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 0xdc0cab6a3f8287cb9bdda30767e936229a011198ab48d12e89904961200da9aa. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/NLGM12041442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d16cb5b903eb88fce4d2cb0d7b8a496245f0376acec7d088b8c58f0912a7c4b. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/NLGM12041443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc777ad59a3c16ce4d41792658d7190a2c7a4b6724def45d08f90b20c131fca7. 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/NLGM12041445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e74b7bf97ef47bfe5f4eba9ef03abf4050421271a2288a6234155b772eb2a1. 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/NLGM12041447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb73a20a88f7a74ecb35d2263b4cf72648d1fdcf9b634040ada5c72109375e0a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLGM12041451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcec436bd2202399622a0ae8186c145b32cfaeac3996fd00732c6a4a3ee037c2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NLGM12041642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7376717cd9d5ddf637613d6b448d9d483c300837088db0b16a4b5f9c51b2a1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/NLGM12041645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb82d00bb730906d41b5dac1f9c14d1dc1042d19e2fe4e35989ab6d812a77fc7. 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/NLGM12041646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640ad01bb44d7e3824c7d4511552e297ac3613d02c6183a472b60537071f94fa. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/NLGM12041647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70929797da0d9e094a821ff20709c9f5b4df172f269d9004fd431261548f346. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/NLGM12041650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae11e953249515135584dfde29b1a6864a20b6c4e57db33577c169959a717b76. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NLGM12041652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32515bda04486a5b0882dc26e14d985b470f093193d8ac6d5e5bdd0b5e95231e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLGM12042645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6e4e4de1653a4f5c9050635ce110a790291e77cd6f6f220855b5c63f4d3aaf. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLGM12042646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a4ec279f36519ade23aa7b92ae3c346e588cca29dec4585bb5e57af2f541e2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLGM12042843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68cb2e6f3a6ff7a7912f165176ac7024cdfbf4814a3b0f411c967eea0e50a1a. 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/NLGM12042844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801fa133a3f902877bf5c62cce11fcd09e0e6b890589d84de56bb50d0c035cd. 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/NLGM12042848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f3787c5b8d588e3f8cf00b2aa71119320e965d132b638f14b9fdb772ed9ad1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLGM12042850.