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 0x76fc2395dd4d8a4910b2a2b4de9c405176b736ed24123eac9aed305490e9655d. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e11af8a-4362-47ce-934e-d6cc76469eab.json and https://artists.proofprofile.net/proofs/artist/4e11af8a-4362-47ce-934e-d6cc76469eab.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 0x37e240a6e7facca959043626f3c859352679ff54ae272719522efaa4fdc3b71e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZGWX2015439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b25000a363cccfda76b0e5e842b249bddb01b56f5efc496746f29911b4367e4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGWX2015440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2506ef0daed0ec2e9df4d15cad2fbcef3eff6883f074e2c18772f991ed09ecd3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGWX2015441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1cde71201ab2646c41d9f17605a57ac1ab676f614de4c16cba1cc846e96ad4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGWX2015442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053978a7e1505628264ecd5f211f5a1c8f86255b92fa0083908434df7fb32b50. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGWX2015443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546ef87c918d582b1a0f16e4328e45b950688de3c2391c457ce85fda2091dcd8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGWX2015446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315fdb67e0135b2de29d75e432b9fd9e05270d0d1ed7711f22b97b469f03f798. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGWX2015454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427d1cba1b9e199d87663a19cc6b2181125d56b8fa31f45760905cd6b1ba35ad. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/QZGWX2015455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eb20d07c19de499d0e617de90e92a376270ce5d36322974411b86c6f88e431. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGWX2015456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683b1fc470821bb16941a987fe0dc78e2c054e621c91c01f8bd071cd71621388. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGWX2015458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd348e1c4f2debc86b2a63b0f116d7318d4b43917e1910389775e98f74e83ca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGWW2078320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4beb1c494a5143a890f20efdfd171e1fcf774bc483fe99cc8592c5ca895e71. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPJ32140388.