Rancid may refer to: Rancidification, the oxidation of fats, fatty acids, and edible oils Rancid (band), an American punk band, and their eponymous releases: Rancid (EP), the above group's self-ti
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 0x48e5d62f3d6a953806cc32e446891a09475bede08ecac9ad8d17937780a652f2. 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/36ce1abf-aff1-46c8-9afb-1ca4f86b22d0.json and https://artists.proofprofile.net/proofs/artist/36ce1abf-aff1-46c8-9afb-1ca4f86b22d0.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 0xc4524eacbd78f100f80cdd890364a1da8f959d55c4d371c018925982e1a976da. 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/USEP41713005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e580dd073c5fc1d8e1dae86ea50f647008ce8b0f220e182ffbe39c8d9dc8ac5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:46:29Z), 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/USHEL0313122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53db45f408b33025b0a5045e430e37ed5d2da59b3dbb1d498c93798d805bf937. 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/USEP40322117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbd15f3a1ed3f56591b41ac556709bd61da5e6a4a8b4121a81f3be754630e2b. 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/USEP40811169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b67d86466482cce82665db655f35911f76bf1f43cf0c4036a44a1c9611f0706. 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/USWB10301554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180996f07f66e722a392facb0a05afdfac5c366600795995e26a2ec7f6fe949. 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/USEP40505119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bc9aee34fc6f551678de77c24f36c276dec8746d2259415ca1f26a8e1a24a0. 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/USVPR0410193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07367bbb7b95894e59b947dec7676e00b674ac11466ee1c11dedcc84a1d6865. 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/USHEL0605105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa211a81e250badacf7a67fc8da7d5b981ad679b2977308d3d89be34b792137c1. 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/USEP40811173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277a813ae520316b9649c7771933fb84e8f534e5e13e7375b10ad405ae5564a9. 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/USEP40811177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1509723832e6e6b39c12c350e2b6a317c1f4bc6983d89112cb6c5c41501fe95. 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/USEP40340105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabe66a8a0961161b2f93fa281cdcd00b6734897623997f204c9d6bba0252b77. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10606946.
Chef Aid: The South Park Album (Extreme Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabe66a8a0961161b2f93fa281cdcd00b6734897623997f204c9d6bba0252b77. 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/USSM10606946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646f7512a0dd5878bf07e1e470eedcbe1d9942bca210f2cf4a6d5f8da4285b67. 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/USEP40340116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e502431d4cafc5e447e46601a542d19c7d63397af59072d861f146721911a5. 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/USHEL0313106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb8b4786aaf5878bbcd2885317b4447f1bd930a6484ea3dfbe0732dcdacbffd. 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/USEP40316104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c6f00fe6649c2234c9b60237d028626ead8a17bda7a5a0c106dff7779082ce. 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/USHEL0313103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9b19ee04a1fff5db84b4c29cac749cb724fdaa9d40065bd36a87c36cb3aa1c. 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/QM7282436994.