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 0x5422a21b5d48e218c74c7d0d37840de1a105a0599c87aca0e209013b94d8254a. 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/4f7eadc0-a62c-4296-9a0c-025306d5f6a8.json and https://artists.proofprofile.net/proofs/artist/4f7eadc0-a62c-4296-9a0c-025306d5f6a8.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 0x8473134baa59f89de7239fe3c771673deb98240f968c56f38f36f2437d62c34c. 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/NOCVC1737070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940784e6d67ad2bb67b284bc5d507d648565f36c62f450198f1ea7dd23716def. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/NOCVC1737100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6cd7ee04c5d43b17e235925267eca05d8cb3a6133d3cb6719398e9eddc87cd. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NOCVC1737140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b685d6eced1c9eb30513b307bf0d6bdc3a26d5c9fbafb8bdc0c39501884cdfc. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/NOCVC1948011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5f9f6b896e4db3fed84f713cdd6529353252a3a6d8f7fd340dafa15074812f. 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/NOCVC1948040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716080ae32344b97a92518a27f265c8025cc27b11af5baacf00e523b2dfacfe2. 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/NOCVC1948060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2879bf873d3c2d1d1f636f152c0db47c6f95a67b8c79e8682323eab67182f9a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:51Z), 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/NOCVC1948090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aa208ae3af62e2e260d69622e726ba5f5b005dbb53dd114a4ed67a5346cdfc. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/NOCVC1948100.
Cedar & Sage (Riders of the Gallows Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cda64bd4d6b1dc4d5e6b9c6cedb283099f666d894a5e484c34c9bfcb8249d2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEPI82300457.