A mammal () is a vertebrate animal of the class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain,
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 0x0c06dcdbc01b37b3e07dfeaefdbda23fc4af7efa61b036ecd498e94e4652cade. 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/fb005615-0db1-46a0-9042-b1f9828c1803.json and https://artists.proofprofile.net/proofs/artist/fb005615-0db1-46a0-9042-b1f9828c1803.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 0xfa09f81429bc19132be04d262658c959c85850809da22b67ef7dd2b5197ee192. 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/AUZH10700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b48a596486603f22826cfff98bb7d07a9232acfaaed6ca3339466091c37ed3. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/AUZH10700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7866033e7fd0101d6b9ec3f383e8bb98f0daf1ae8e23d3a1eeaf83bd5bd11a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUZH10700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1d70c42f2908696b8f8b042316ab5ae681537cd7ebd048e85a6adfb31afefa. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/AUZH10700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ca8a9174a6d9044c41e1a8908f507555486e645d2d0793b10a6102479ea5f2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUZH10700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e589b3b9475594a44daa545ec5e1ed092d73392205075e07a1b4e9e01b0c8b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AUZH10800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d96628b845bafd9346a944ae0c457855ba9e64a84d7d2418b97547ab40417d3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUZH10800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fd65adbd1bfcefabf2ab84ac77a41ed1d6de2399e15deaa1129b3b456e79a4. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/AUZH10800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ec9d87a9ab359ce1073c9709d667aeb02ad9bf611d22f7707204539a989970. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/AUZH10800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a84d8d0248933ba77f988356f56005f8d79a51976ed10fa37e4d765d635bb9. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/AUZH10800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620e8aa9335271e3cd5e1d9d1aa5b76dfe79a37f4c797a516aaf4ae7b6b7164d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUZH11800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64f05409f0e87f390f7ab1aa79ce74de3e2142c4facb8989cb99119022238f2. 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/AUZH11800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73ba0bec3955b370236671ba10227a222f3685c1102c5bf69af225baf5fbc12. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/AUZH11800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fd55ed5fa4c5fe30572aaecec3a654baa325c5b170747a63840e5599503c18. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/AUZH12300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6fd31be6e676971b813beab0547cf07fc1be7fda6ff6c7297577ca2e144934. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AUZH12300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a14ec7b59542edbded2d8280ce0271b44eb0c470eae5e438c650626be8ec04. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AUZH12300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3216f31ebe1a00ed1e883dddd627089cff5a85f904c57d2272838e6a7d83a0db. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AUZH12300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6129241c80a4e26667ae7b86ba44c96d8ad9662c58a4bc6eb6cf5a63e6a0dd9d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUZH12300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611400211572d31287064e41b495a6adba4b4badbfc95cd16e8cdf06cae1d69a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/AUZH12300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1491f2854f79792382ff99d380651dabb18ae68710f6c7579fe4f319fca478. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/AUZH12300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a9a6d40517f16de9d637c940e8b974f62ba6bad9086ccecbebb0851a01e91c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/AUZH12300084.