was a prominent Japanese monk of the Tendai school, recognized for his significant contributions to both Tendai thought and Pure Land Buddhism. Genshin studied under Ryōgen, a key Tendai reformer, an
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 0x0bfae6b0e49ba55a9aeb434ecbc9f2d76437c8a4da48bf0401f13487c50f3a3b. 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/669f8381-07d7-4d66-9d4b-051b9dd24327.json and https://artists.proofprofile.net/proofs/artist/669f8381-07d7-4d66-9d4b-051b9dd24327.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 0x07cd477f2817d4091a6aa7b1df7d27d2e2aeb9774a03cb495d149d7adccbb77e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM42K1785771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63de274e4c8a289f0c28c8d523369de5698765acddfc2a5dc64cf43d6e9a67c0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM42K1613434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca609a0ef827dedf3b83666b287f60042254c1ca88f6b34d926fb1cef4f803e. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:56:27Z), 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/QM42K1884017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c2f73ddbe962c9c0fbdcbe939dc1cc1e912aa7572205df53fbd8e2a1c33b37. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:40:32Z), 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/QM42K1926742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09200a0b178d2dce2b29ce70686a63b16b5d917b2f8833f2850eae2d48699db. 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/QM42K1984699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa000df9af9ac6ab4f92e65f564d9ed72e78749742d9236f30996770d9e576674. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM42K2082322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e3b8c4b1f7959b9719aa830222c7a8872ab0ca60b4a224c6c6c4490efc2071. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:48:33Z), 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/QM42K2105427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866681090563547f84e3042c03a4c031daaf1b8313c4eec7a39b99f90e80c5fa. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZMHK2049086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0babbb38ab7bfc122c554d0e59499d8872c70940e7b1f4614660ba210a1352. 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/QZS652177166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b44269a2520ec448d71d6e75e77874542e8611546a9ffe97d9660288d9c2f6. 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/QZKDK2292780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d81e634a104263136fb1c9f1b46cee120b9aa4a7c4da4707020935f8cd3b4db. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZKDK2245001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942ec6b81d6123803f25a6b7ea1a144f369a16afd4f02e8514e9e0e4ab0d713b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:53:02Z), 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/QZS672221612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926d5a64dc1f4719afe855129119d83c0269ca8d7f7d6d8796f94b70f560f467. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMHK2327930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c0c492fcc918d0ace93b0cb36b990459b518ab0aa7a323a32451989254f5b0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZMHN2280761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8657b8e70fb188ef0c49541e626a811a3871449cd362b25719e12592ec07b70. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM42K2445181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687fc07af720aa7fd19c17c3c5b26070ce28df31efa6e6768b4bb55d73422661. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZS652411626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ed66cc38614920a901bdf3a4219462793883cc59f7ba69976ea164cff58957. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZS632525563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c92e9b05b58002ab13a9fdb8d7b39d3c0b078ddef5aabac8dc5d92a7b84b714. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZS672492836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cfe6f102b55470da36700fb8062e96f7651c82cccbf63d05b2d28778979451. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMHL2565600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae539e49f783db19816cf5f06a96371a66115d9923f53098f361ebd62a0b335. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZS632527730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41083e1e8f142a15c13b5ba6d8a26337792d616d493ab527642c678973a7ea2. 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/QZNMX2511896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60deaa114a11a6d076ea85d6d213708019000e0c732577ace45eb61ccb42ee4d. 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/QZNMX2511897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ba62210d035fdd4f591d9e49116c61fbf3126bc5b517c978a76002c639bebd. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:30:28Z), 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/QZNMX2511898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e7123433e6d7c602d7018494ab67eb7993bab0d93cafef3ba3be5140e4e99e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYX1958302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1828949949f919a657b5738ebc533fcb2ee17dad9a91fa42e609619cffafe561. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYX1958309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff0e25e4b02d082edec43948f0df4990f5a2b49a36d6813a28cd12b0f691fd5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYX1958307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6690e70545a53633ac434420f280857fd5829a0f4c3b24e5a0f5a3b89975279. 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/SEYOK1704977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143742fd1877683645c1fcdd506f8455fa63dc2e1b38c69cf372aa1a4f98d18f. 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/QZFZ22315695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8ba6c73ad28ede224e431f5d5b1e5f5c5f5f6de2aa6c8e34ae3609c210db46. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ22315696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bc56fe38eafa84e33b9bab7bdfe516ccfea3cbd32018a37c7a4840c2cb3d97. 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/QZFZ22315697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6294a56a37f282de6bdfd2002fb835cb0c3c59bfb1d2db2b1c787789fc3d7c50. 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/QZFZ22315698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fac8ce970d2de7a28dd4f0cb402482a068b1d61bce40ca0bd93aa9994b2d6f. 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/QZFZ22315699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa913c511535e66fa368cb6d58ef630bb90df22abcadba44d4d162c063c1dd8e9. 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/QZFZ22315700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c00e3390b9d7ecb02f5824a08d1a798ff19cf487eeba15db9dcdd7636bc7442. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ22315701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9109ecf4e6aff71e13d53f1e8b6863639cb15f4cd2322b7617605fd31b7628b6. 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/QZFZ22315702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aeed08cb05090a72e259778bb2fc9e25bf6f5e8c05ee93664457d1202950b4c. 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/QZFZ22315703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e19244cc8a5f37a9d738fd52ccee28e2011f3d3456c53453a9f945de6f29de. 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/QZFZ22315704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83653b28e77cd3fbfe6d67fdff127e3fe3c708b9ced722d0bfe1b9dbd0ee8881. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ22315705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bc61fd5baa5b312e01ffd9caab008123adae9f7e90601645c3a267dda513c6. 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/QZFZ22315706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8050e5453b3efe538121d93095df8f20916ad48afce14ecf0c464f57bdbb1c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ22315707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6085280b3871141bba813c99c41abc6ea965320f43b94f5205f065e411ab71. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZHN62102223.
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