Masteria is a genus of curtain web spiders that was first described by L. Koch in 1873. They occur in the tropics of Central to South America, Asia and Micronesia, with one species found in Australia.
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 0x27f0217b693f327ce0437a773f2e686fff2ba1c614c86959638f737dc0736ecd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c160e3a2-7035-4a0d-bf3c-869298113e3f.json and https://artists.proofprofile.net/proofs/artist/c160e3a2-7035-4a0d-bf3c-869298113e3f.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 0xc8f72efdb9733cbed4d0f663938e5bb00d233ff4488002d18c24b0d1d258e320. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USLD91716918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3b6e70588f7a3ff2b18093d95fbd7bc135e02af7be4c276216e0cf1b7f43dd. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USLD91717937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf363def9f3fe7618541ff69295f6b8e2e48f5c8f7c6eace370dfe0e9e9bbf1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CA5KR1944141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd05d0f4072c340e896767786419b1fef3c6a67852eda798d7fd89ca47dc0b49. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USLD91725357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2b3dfff6b9c686f85102d1d002ada4b51d06e719fc4a9d495e6744edd88e20. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USLD91725910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e29ea4c85a520ddeceedab84c43ff50bfedcc3a80839c2dfbb4901f54de420c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMHM2081853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe5a1b55196d4dcd128dddfd91acb9bd64fe1da0ba296a9b75db82226ae8ddd. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CA5KR2137144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866d810b71773d99971f77a0481c440a89d5f14754ece689a0b379ed947061e9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMHM2056005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f48cc878bfb3e15e19dbd70e89afa97727f4f6737a662c3ec015156e9426703. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CA5KR2278882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa006b948018a8b74a075cc012d1d6c953f9530f976fc375a9f261518b7d127aa. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZMHK2282419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0c4a0b5a62126498b7d26b2fc5e0fcaefc30877df0e780d6a77bdb23ad6364. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CA5KR2393053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678314816f89c4aea4675d5dd634676f03c5ac7d799d63bcddb85538db7d8c6f. 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/CYA112000733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678314816f89c4aea4675d5dd634676f03c5ac7d799d63bcddb85538db7d8c6f. 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/CYA112000733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9e1d2505e34558137e845ffa9fc35ca6e86c5ebd8d398026d8785a939ec0b4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR1956000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43e47d03579b5a4fdf2a51e8b012a04ceaffdd8e2b8b658118f203ee685b1e8. 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/USLD91732727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb34bcc262761f489bbf4f06df862173b2725918f185e9a6db30faa4d0b71603. 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/CA5KR2273724.
Best of IN / ROTATION: 2021 (Mixed by Cloverdale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07d33929618c1843837c9ad7599e1f62e1399aee69d95cc22a0616315e0d7ea. 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/CA5KR0033196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd141b9acc88b92486050036a186c5268f5c6a75872782d21c8cb53e0375f3175. 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/CA6D22200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd141b9acc88b92486050036a186c5268f5c6a75872782d21c8cb53e0375f3175. 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/CA6D22200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb441fc5bda6798206ac5956fee9076e3603e043d6bf3da2e21adf39e01332ca. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/CA5KR2142275.
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