The Mayflies USA are a Chapel Hill, North Carolina–based rock band signed to Yep Roc Records. The band is a classic example of power pop, as their songs featured catchy melodies, vocal harmonies, 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 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 0xd8bdaec699f0cd5110aa38a144a6f0a600ece0d91dcc3a8a2aeabcd559876176. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/301ea24a-4c93-4d9d-9718-cc2c0b1d5ac0.json and https://artists.proofprofile.net/proofs/artist/301ea24a-4c93-4d9d-9718-cc2c0b1d5ac0.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 0xb6d9744f755bd2abbbb1aa4dd0b5c814d7297b9ce36a0be25c1dd566ce62c332. 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/USY1R0003401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab1c4e29da8453d183e4be6f3653da576ac632bcf9f0ce4f06590b9685fcf46. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USY1R0003402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe566703e0651786b1f13ce5f5d95b28e02562805713c498b6120829429509fa6. 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/USY1R0003403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa979d2be97ab783e30a8a6b34b2429423a032c4e7540fa9160d861fe387e0fde. 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/USY1R0003404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4701e1cef2d873f058897252be8b5897d642a0ad2af3b9bce81002642c9dfff. 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/USY1R0001702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23bfa29686a1f8d2f4a0feb762974f8c9a47ab88420f325b19d0e10f94af489. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USY1R0001705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fec341e076a4ebadacf9b902151c2aea3f69a7ec0523737559bc8dba6052a86. 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/USY1R0001706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc600419dfd317e1f5c69923e81a4fb812759352076952b7afae41c098641bf17. 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/USY1R0001709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3273d614a33c1e2abe47c86849d48a929ed777d8dd825bd789b93e02c04091f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USY1R0001101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d352c666cd0229bb1bb13ce23e22e5038fc9e66e407c7c65089f98e98542cb. 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/USY1R0001102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b223049667b612c7ee71d11b409792caa9bb7be7c491ca56b3db8b4c293a18. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USY1R0001103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ca3ec8d685f96de26fcf1ea8a16df866dedabc489ab90c74dd79fab1f94163. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USY1R0001104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e8bee6baff9c2adc7e14f05c250aed6c1b0d502fda6ee1395c11a00335bffd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USY1R0001105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5018f941dc5cd21f60fdd179594387fdbb73436c0cb318a35abb95e98064884. 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/USY1R0001106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff3bdae0311f48ab618d45d592f1408f862ce93682efe75ca245c7d851c3399. 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/USY1R0001107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45fc60bbfc4e8f0c5b5a580d19d86aa65d21b8f250468366a7b9fcd28346cbb. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USY1R0001108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c362feba18a1d162bcd2dda6c82f6173ca31262a6d72b577c711ac3bae9c16. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USY1R0001109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f508aa77ab23c199238b465c582192c7f816a0c6221b4de42026486ff767b7. 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/USY1R0001110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7597cc0aa52605975a065f18c4cdae979cbe096c85ff7dca9d9c07566b2542f6. 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/USY1R0001112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b253b38bb01d2c22a2fdc3027a2ddc2ef24f705c1d5a621a83ecc8669ff6bdf. 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/USY1R0001113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85b61ddb7ebdab85ca38bcdaca8eb77137911f7ec0770a2558d9528516abffa. 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/USY1R0001114.