A fetus or foetus (; : fetus, foetus, or fetuses, foetuses) is the unborn offspring of a viviparous animal that develops from an embryo. Following the embryonic stage, the fetal stage of development t
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 0x9df2200891e066094aaf29786d3e84aaeb422c0c88195ff7499bac2169773d58. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce8a1f8a-6c82-4bb7-9f09-7a8d501adf8a.json and https://artists.proofprofile.net/proofs/artist/ce8a1f8a-6c82-4bb7-9f09-7a8d501adf8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everyday in the Club / Bounce on the Water Remixes
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 0x0fac36e39b43b1b3d5ceaf2a41f2889653128c41ac0be1b9f9a83722e7c6f5ac. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPS802356208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8b39b420ae03bb13faa0d15e7ae93f4b44a872df7e01eaa3e6430cbe6fe3fd. 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/JPS802356209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7839a43766b1b97d7b04aade0585196cabedeaf8b98de8a9b4e1c871345c91a8. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/JPS802356210.
Everyday in the Club (Martyn Bootyspoon Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aff349bd5852379bcd57af7bf0335bff4e11c39e9b4406dde6d73625e382566. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPS802356211.
Everyday in the Club (TREKKIE TRAX CREW Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280c88722c40a0992b9588e752a1dd9f5e380d9689f1ec6c9a6e14fecef5c812. 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/JPS802356212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bbd601964342dffb6f12d0919185e2cf4b24ff381eb3212b7795d09e181d04. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPS801954362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22588c190b3cb17684433a18b7454ba52c3de19321d2d326a8b64e810c4f5169. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPS801954363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972922d2aaaccf340c0434a274e99533c7a9b3bd796f51e0e098ceac000ccea9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZQGC2400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca4120c1f83c630d49f31f8f2168558d2f434633e3072965e992cbaacbfed33. 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/GB8KE2203427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e77a8c3033f34ab1dc7697089f3d9a626370a5dcfad7bca1114721f7785eb5a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GB8KE2157869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7ff7ab801382155a8fd5ba52dd1a9c9ef80cb0a895ea4bbaa9155ea69ba9c2. 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/GB8KE2151152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5414e42f63ec5cfd99442087186873a0fce46acb1d1a5f540c5d5e714ba3fb. 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/GB8KE2328158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1083ad4ff1e685b25562378024fad1463e0fe772be0ca9b5c97dabc032a43fc1. 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/GB8KE2328165.
Tribute to Jabaru: A Call For Your Mental Health
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac7d23264919ba1601e6d77255dcccac3c52066dc54eb325396875bcf2d6658. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCJPZ2473665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131ac8ed5da47f023546e60a09a8e7cb31b0c81842480dd440e9f009133f3a95. 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/TCJPZ2473679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7fa5040e0eea377d84c3640272dadf7f29d9a65b58745c9a02a07fd54065f0. 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/GB8KE1958773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefa157a8763ec81b8698acd948979c49536d2e1491ac4a371d1680c95f9650a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GB8KE2159374.