Crackers are a type of biscuit. Cracker, crackers or The Crackers may also refer to: Animals Hamadryas (butterfly), or crackers, a genus of brush-footed butterflies Sparodon, a monotypic genus whos
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff67446fc5d5f5f809dbdb7125c1ed2fe235f4bbe46aefe550e3edefb050c1f7. 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/79b6f562-fd7b-479b-961d-ef55813f7952.json and https://artists.proofprofile.net/proofs/artist/79b6f562-fd7b-479b-961d-ef55813f7952.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b23b2e2f29dc4e0218f1ec289caa9a79b6bf59b8bb2a04a5025ec05fe6fd3e0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USVI29200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69da3da41f352935bb454ee924cfb45ceda044a5d33630adda04f7842d60608d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USVI29200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162cbf97d73ac66c82091eedfb6fc8f6da8040140bfc4b3300ac48dc47014b01. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USVI20500631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2b998528c20cdba9bfcfe1688dbdb71ad75a96d878330e5bffe61b99072edf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USVI29300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa3ce6a4b65287adf675739f11977b95a8daf1908e4ff50a42af5e2aff8d28. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USVI29300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa80c612d7c73b571f616a974ccf11800fbf8070fd295a34a10463e7061a60f7. 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/USVI20500632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300313773f08a19fc63e1062ade1432393a2169da0b62d186f9b29979f225d26. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USVI20500597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e7346968aa43b1778b09b3f8b232fa2fe5a20234f706d077e37f4eb2838620. 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/USVI29501146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e135de347334b7407f6d6078ec704f7d33763a1a8c73a111bc045a50666a4f4. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USVI20500633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaf5f96d38adb9c3ad18351c2735d79facf346d5127c12574fd693b94899461. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USVI29600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a1e67ebc5a43fbf68eb237fd59c2ef268741aa935dd71be57d244c0830f1d7. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USVI29600057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8103d4081d837a7f437bf31d02022383c4d36f6413d7e2bb69bd53bc9d3d0d3c. 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/USVI20500634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1a209b9a542b8a373e8e7a502fc77a65b0f9bb13af20cb3224e0794a0686e9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USVI20500635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc336f3b2c2e5c033b839331d34c65886c817513d0bc26c29fe579c5fdefbee18. 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/USVI20500636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b23b2e2f29dc4e0218f1ec289caa9a79b6bf59b8bb2a04a5025ec05fe6fd3e0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USVI29200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2b998528c20cdba9bfcfe1688dbdb71ad75a96d878330e5bffe61b99072edf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USVI29300006.