Marie Hsiao (born November 1, 1993), better known as Mree, is an American indie folk singer-songwriter. She is of Taiwanese and Bulgarian descent. Mree began writing her own songs at the age of 14 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 0xa05def29804efe75cb2aff8de17a72fcecfc50f9208b0d65075e683a3c199266. 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/dba1f8cf-4591-4bd4-b98e-e7c2641398d8.json and https://artists.proofprofile.net/proofs/artist/dba1f8cf-4591-4bd4-b98e-e7c2641398d8.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 0x12cd859db613c93b4f47a2f3c745bfdd44a06bcbf960e2409e29cb7674839d66. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USHM81184626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533cc88d07fa934062c179b9c99d6870c20285c9fe7ffc127974137b3f6c074c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USHM81184627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45725e44de907883af1435f5422f77307f405b5de5eab99c31d6c6c131fb36f2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USHM81184628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37d9bc3da0bb91aa0fce9feee4b3c4b4f77eea7ce22fb2922d70b4c5d5ee857. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USHM81184629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2589caa4ed8ebcb5686d29157fdd783dd582a8bef2f838b6309fe985d33295. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USHM81184630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758993362eb8be45c7ff8c3891ef5360716484e0556c787fe114cb3b707a94fd. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM81184631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81fe99998e7680c872811921f085e054d0c94383e3a3e072d36a809e57db57f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM81184633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c14123ae04241ac07941f33df5884f31734c710efebecb03142de420305930. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMG881300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cba470578e02409c08e1300cbabb5fda7a51eba8f87b3f1c2c0034b45f12a4. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QMG881300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64a498a33f0dfef7b64e8b8b62fa035792862afa4cd66a70b2b767335713797. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QMG881300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c455715f677a15c41e6e66a98acca062d8aa78607f2af130acfb9d772c51c87. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QMG881300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a694917b59c11068204a228f681ec9a38c30350c918e2e290a69c99807245f1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QMG881300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8b5137fb4512b2def854829f3ade6db458c74e9c6593f108528055dbc07432. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/TCACU1644636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4edc9c42641e26e7cc1b497c233e67d0eb67d6e64a01ea35411b92be3481f719. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCACK1534149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8518a1c11ad0074d8ae418864b354dec4afaa1437961c294cae9ea5b1980b4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCACK1534154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a8374f07196ef733dcc09479a3b469db6a87ad31976d7dfafd617edb62365a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCACK1534162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51220bfa93752cdb873077b3cb0700d0a5a3ea5a33bf992ba15f774a8279b5c5. 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/TCACK1534163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3f357c38f05a40aae29b8d4685e681fd42aeee73f2d2518cc3df0c46c0470b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCACK1534165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c211b79f0f3de17e01b36ef68bdbe8d4f5ac683dba7ca85661c651044e6686e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCACK1534166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8b5137fb4512b2def854829f3ade6db458c74e9c6593f108528055dbc07432. 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/TCACU1644636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249b0767482a163e527c8dfe3a2fac017524ff3ce5cf3b9d8e8f85ce405c54b2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/CAN111700410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05f3349faae1667a459f4ff67c855e25d50990bb82795185fd882a57557f156. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/CAN111700412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f7aa0c11192daefdf4d9e756785da6971ec8526490a84dd4de3fea0a0b8b24. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/CAN111700584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb761246c506d41e2712a332bc7b8312b51b980c2ef32f8d1706179e7c92d524f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAN111900246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428c046e57316ebedc35e280120727ac0df02e51a641b91812bef206564f5a67. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/CAN111900247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46ed89667d902bb7915b659f5974eb0204d6615f439399ae6e5f5dbf1ad7ee3. 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/CAN111900248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f28c12f3aba4f625265838697685248223ae105191fa00007f287acb6940ab. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CAN111900250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf228b5bc9002c8912b0c682714c02a0223646bb3c8485866bb6b6a9d61d2cf26. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZNWU2187925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba37d58201cf7a7cbed203a4f1aee9153df35895290880ff9bc8e37f839049ee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEM2374756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ce0578ee7a0ce5af12332372c6d4421eab4916b776182c7d91badc75304ac1. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QZWFF2391564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bc7eafc71d77189cca322f1274ed5cdcfde399a1a31951794aa129ad889891. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZWFG2395396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05f3349faae1667a459f4ff67c855e25d50990bb82795185fd882a57557f156. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/CAN111700412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa592bed61e4aacb66b78e992c063dfb54e382f41798dd64048a61c55aab6603d. 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/DEOE81510298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c37a35ede8e0074a9815988ab7590c2891372095ff02f4f22f3ae7cc433e29. 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/QZHN92440188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35f54a36686179d80b94397aacd3230bbfd286565bcce21628b90dfd6da1987. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZWFL2396570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957547549cb3e4d2585b04b732756986e6d025136b509757f3f8c4d2f70ca05d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB62365589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca30c31b32ded0c9465a475db135b1ae232f9cc95be596750d6883638143f2ed. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZTAY2303910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd715eaf9df191147da5e2320a6629bc3342544f9409382cc4ea07515f34a51. 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/QZPLS2390581.