Kerli Kõiv (; born 7 February 1987), known mononymously as Kerli, is an Estonian singer and songwriter. Kerli entered multiple singing competitions before LA Reid signed her to Island Records in 2006
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 0xbe1d9567fd87bf79568615e9912967188c40e86ddbf9e99bb1c63594810c03de. 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/f55cbe49-0925-465e-9d68-0146cc1d8a89.json and https://artists.proofprofile.net/proofs/artist/f55cbe49-0925-465e-9d68-0146cc1d8a89.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 0x962d9fa975d5c7234c9e525c0a23b22b2701b12834ee6881f4f0773db53e72e1. 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/USUM71029354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf417a1052b825f19096e730d947dbe4dcb83cb0ae63b7db8a9298c7d02fae40. 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/USUM71108781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a8fb15132ed7bf5890b3c442c062d100c61bf6645f4f84e150844c6315e99c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USUM71108784.
Army Of Love - Cherry Cherry Boom Boom Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aba33004662d27114397df4787452a98d62323cdd24b09952304fded46c5947. 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/USUM71108789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a4433d6e55b33dc57aa6376f888c1f5198538f8ed4f7a480c5e2e569704645. 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/TCADA1728220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909e39ace3c5d7d641f17d9a2fa8e669f5b7a9d98794b03696c544ca2086e9a4. 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/USA2P1832259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4728f3d135d56701e11ab315d5b3d485c20af479ba369d9c5847cb3e36a7985. 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/USUS11202689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62999ed1d4817f1a48137bd7cefa02008884c74f1da33f8f86417f9609c8237d. 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/USA2P1836882.
Sound of Walking Away - Au5 and Fractal Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ce37391e08d2363ed69987d31345ab587dc75c397f3c8000dace3815e840ce. 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/USA2P1843660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a38a0077d2e867a434aee15c5dfba6f43b2aa0bbfb2d349e6bbb413a96b87e2. 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/USA2P1842407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5bfcec578a5f58a7cb06c1b4946f535389d3148f9d9d8c671e31d42648a12a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/CA6D21400135.
Worlds Apart (feat. Kerli) - Seven Lions 1999 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c195b01c5d64c33052470a7f66cc6c34a84af9b30c2136200d982b3a356f6e. 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/USUS12100001.
Worlds Apart (feat. Kerli) - Seven Lions 1999 Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec6529aba6c03c8b7645f5c18817e111cbd66bd7d0e85bd20527dcec74a9225. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USUS12100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c195b01c5d64c33052470a7f66cc6c34a84af9b30c2136200d982b3a356f6e. 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/USUS12100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec6529aba6c03c8b7645f5c18817e111cbd66bd7d0e85bd20527dcec74a9225. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUS12100007.
Another Life: Motion Picture Collection (feat. Kerli)
Another Life / Eternally Yours: Motion Picture Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3736cb7ae332de60a2b8589c35aa7f84435c790926b5c51b9eb7ea8a6595ce63. 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/NLA322000287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909e39ace3c5d7d641f17d9a2fa8e669f5b7a9d98794b03696c544ca2086e9a4. 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/USA2P1832259.
Raindrops (feat. Kerli) - Hotel Garuda Remix
Ultra Summer 2 (The Best In Deep and Tropical House)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae92792186c8ac537ee6303beff30cd0b0e02355757f06b8d2de1ab9a7cd2658. 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/USUS11203391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5bfcec578a5f58a7cb06c1b4946f535389d3148f9d9d8c671e31d42648a12a. 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/CA6D21400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1e852c7d84dfe1df6daf17fd33fcdd556f9b38892c3a3231b35e5a2fd361d2. 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/CA6D21500249.