thumb|right|Quicksand and a warning sign about it at a gravel quarry in England thumb|Quicksand on the Thames Quicksand, also known as sinking sand, is a colloid consisting of fine granular material (
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 0xea51b34f45790840cb460ad02dc53d0abc1a697ec9a3b620d05eb853646bd568. 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/b1c893cc-43a4-4826-b77e-63ca7b1e162a.json and https://artists.proofprofile.net/proofs/artist/b1c893cc-43a4-4826-b77e-63ca7b1e162a.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 0x491fb1f9428cc318735e965a4bfccc5fd7464eab9474de8eea26768715569423. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUR10080043.
In-Flight Program: Revelation Records Collection '97
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa109a6c161bde8d84720e0c9dfd2f95d373a9b9abbed1034941d5404c48bc0ae. 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/USB4U0400633.
Revelation 100: A Fifteen Year Retrospective Of Rare Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feea06f315884acb824eb96bc640d6796246b1cd9a5b99714963cb134b44ddd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USB4U0401085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3516275facfdafec268daf19c53f74340fb24f06968ab54440fa7b9c94422e93. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA0WS2315703.
Holy Dub (Hallowed Be Thy Name) - Quicksand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57834f2e7f38e3b59248926ec0d022784c44e2a79a440943746eb0c47c7bc5b9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA0WS2214308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1672fc961b15169adb221f2ac8cd7629cde46288e2c5fc9b5a64a705bd83c5b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USEP42357002.