Emily Catherine Yacina is an American singer-songwriter from Philadelphia, Pennsylvania. Her music has been described as indie pop, indie rock, lo-fi, and bedroom pop. She has been described as having
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 0x888d6997165bb1682a8c49f82de0498e280f3ad61dd42d3a7a5ee9c0ac48c0c5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a433d5d0-7408-46b0-a84d-9fb688f2ce03.json and https://artists.proofprofile.net/proofs/artist/a433d5d0-7408-46b0-a84d-9fb688f2ce03.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 0x85d8536f0f8f4d7ac590da90ac65a7593660cd137637848bc4a9646bce9298fd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACJ1556128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeb8e81cd88f568b6ba02bb0265aacd2c94bf4f500430736abe036d23fb4a85. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCACJ1556135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4a8d0d71a954f6c2ed7a9bea4a13ac68216dc9de6fe4663df540f48bc330e3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCACJ1556137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2467eeb5770d39d25b0fc2601db15bd1a400bc99eba05315f7796f11868900. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCADM1863985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6860a3b91c32c179b0ad096b558a03456f7dfcae99749be916b825bd505c41fb. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TCADS1848220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23b3497898479af33ae7cedba5b86cd3677f29fb5b11d4b48d1bc860cf2b670. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:19:06Z), 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/TCAEK1998370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ad2115a224523a27d943eec662f15394bd395b647e34df615f70066b1d9d2f. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAEK1998372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81601cda23b6247ac9c95c42952c59930ba77b9235e86102239f5bb169b66f25. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAEL1978370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556f1d9f6d47578f3bf723cd582d405cb9ccbb01459a575b05e0eee8be5e6221. 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/TCAEL1978387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340ece531e2984a216b1b821421e7beed367ba1a7c7e3a5b0f35b5aa63dabb64. 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/TCAEL1978390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4678cdd951ca6436e64e749bea785a5310fe7d3fdab44aba667c55cd2f36d55. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAEL1978401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a643feca7e12d573ce959e19117e0dccf76ed2b6dd047000b158ad2bd286ac7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:27:28Z), 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/QMB622300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45140a265aa826db9603cc5f76d5a32e24c49fc39ca6900d5c21666c66c046f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QMB622300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56df660f38137c46d5f1f3d6a86936260e00242284dcc31115c0650595f821b8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAJX2504247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed975fa5e36b2107c1e61caf0f6a105577d2ff6f2a638ac745e6a1d1b351769. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJZ2530893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c78e74f96ffdbd69a8a4cb3bcff34f82a30274966b994a72bdc190ad699f9d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT65X2506558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883791f1f34e844f5b8cb4a8d02461d9ee04c5392bae5e7932dcc79fe0df7e2a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT65X2528669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fbbea8772348bcf43ed8852a376ed15bb000dc35afacadd2f393f4723fce27. 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/QT65X2528691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed975fa5e36b2107c1e61caf0f6a105577d2ff6f2a638ac745e6a1d1b351769. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJZ2530893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05c4bc0fbdbbccc39031955401e0ba98824b390c3055f84d65aa16e2184d0c9. 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/QT65X2528752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab2703a07705bf4902863f482fcea73bea14d3d2761c54e0008a08d1e1dc75e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QT65X2528777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedff4d3a8a87588910e03de17a93766e7a9ec0a6edccf35db35e4058ebce9d39. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QT65X2528806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06c158ede022fc7a40209948c0a5c8fe1f40df7533b3e1e7cb63bdb6a6ce9b6. 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/QT65X2528820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56df660f38137c46d5f1f3d6a86936260e00242284dcc31115c0650595f821b8. 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/TCAJX2504247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35628e8f01e52bb799ccdaa1834edc62894b77e14d46c6f61796516725c0a91. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT65X2528873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630d68676871fad0ee226572471feb51cef33f55a5687d480d772a724979506e. 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/TCAFZ2296401.