Rare may refer to: Rare, a particular temperature of meat Something infrequent or scarce, see Scarcity Rare species, a conservation category in biology designating the scarcity of an organism and
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 0xd2768e0892405a8e17ba3ea2bb022b5814d6f4d9823d2e6a6995d770ef1f2f23. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/408b4c53-9ac5-428e-9ab4-6a61a73470bd.json and https://artists.proofprofile.net/proofs/artist/408b4c53-9ac5-428e-9ab4-6a61a73470bd.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 0xb6fe5d361ce99b76e45dc7d0cbebeec5f1ecc2617a9802dbaddcc3747e8c8e53. 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/ES09C1700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbbd5143ffb3a9df5b71d336e587dad14e7bc8313c154a92cf8e1f85376d018. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES09C1700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ff96d1e89f97345189f6b8ac660d16efe83a19f406621e322a40bf9f44195d. 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/ES09C1700193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2174e1a1f5d7af916525eac0ac3d01e103dac00e1d95b3f9134876554647bf7c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM6N22224580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730f2b0ccb918a9982fe4af2e7800d84b4e31a03f10689b9d41125d6291da0a6. 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/ES6642100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d15bde922f04cf14164031277e30f7cf781c20ca42bf2f7f07799646501152. 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/QZFYY2132363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5646988fe9faa2e328d5ed403fc45097f943ae4e2adbaa20f00b4db2b5c551. 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/ES6642100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1911ce1e91e7d15f53f68357fbc84560dc8fe0bad2d2e5558a9aea0b955760. 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/ES6642100029.