Curly Strings is an Estonian folk band which was established in 2013. In 2023, ahead of the band's 10th anniversary, they were commemorated for their services to Estonian music with a tram bearing th
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 0x92827092eca60efd54d5f4f01498a6d706f86d6b801ecf9546ce4c0fcffcb729. 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/7daf975e-6a25-48e5-aa3c-d69514942806.json and https://artists.proofprofile.net/proofs/artist/7daf975e-6a25-48e5-aa3c-d69514942806.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 0x7382af1020c36c072a7be40e2ff8bbe230f096e973f606f553014666db545cc5. 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/EEHH11400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785aa499821f1fcfd48d0bc09a942b27879010a11feabba938b216351ee0feac. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/EEHH11400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e7a622b51178f6a8f6d80aebae5e50b67b97546bf28dca8f47895e598df866. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/EEHH11500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf60dc7ec9a3dbafc827bce4cf1a3074fa5c97ca8f6ebd710dd908a4421eb957. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:13Z), 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/EEHH11500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f045984e5afa067a094e4a20ff9fae3f3387caffbe99b74171a6acdeed31f53. 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/EEVC11700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb75d0f9ca84af0b099e9bca12f58c30c6dc921eb815dea7c7bf4e6ea9366025. 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/EEVC11700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30e5b445d39934aca8a2978a0d7bc06ee281c451162e85adcfb5e99d0039ab5. 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/EEVC12000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeadc3d7107684811995af757af31fffd01f26a56213556010ecafa55b9c0c6f. 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/EEVC12000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50acd2a33b8964042c873815f6f0813521a603d7cecca81a3a2dc3f0fca56734. 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/EEVC12000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31f272f1a71c054e3ed7adfed56d1bfb13464a3e6d80cd3518523bbdfd5a02e. 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/EEVC12000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535515450f1a829f91a6cf6dd919e44cefe6c599dc282b354a1051652b33992d. 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/EEVC12000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44222cfc1b7bc32c348a70c827e0f5fd66d4360bd1930ea08509c472c1bdf078. 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/EEVC12000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3283c8ff3a3df93d7764111662458bf8518e603d3645681eaa3e20f318cb6b00. 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/EEVC12000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57c7c377db83fe0c03f43407272b897c7d4a19732027ff7b48e143dad5be100. 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/EEVC12000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e45cfaaf311240632aa0e023410052b7b9b77f3921aa49356ced85b1ce7d1b. 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/EEVC12000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c104b27380f30fdb52ee0f29c8768f4877b41b042316f438dea43822743ea7. 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/EEVC12000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9accb6c0ffad6794efeb15a595d917a219ad51a075d39930a3085b1b94a61a66. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/EEVC12000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de0af6a01217f3d0da5ea3c3eaad3bbfa27f79dde5295e718bccb6c5387872f. 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/EEVC12000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa19c9d9af0c74a3c4d806c20600d9f0288b14975e72d774a69aa434b367296. 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/EEVC12000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf46495b3551848fc7d49ad1ef55b66784987b4fbfe78f2fee6dfec9cbe8975a. 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/EEVC12000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ee2d618b0f8147da176ed261fa17e241233cc4094371f0461c214c4fff130b. 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/EEVC12000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa19c9d9af0c74a3c4d806c20600d9f0288b14975e72d774a69aa434b367296. 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/EEVC12000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a53800f97f8d9b4aba3511b55cff45e168e947dde64ebe2edcdb4c7b5209325. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:39Z), 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/EEVC12000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72746ac127e6a8e6d139ea191cade7d98c2962f2f959612780dda4177cd2eb33. 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/EEVC12000025.
Curly Strings - Tartu 2024 (NOËP “Young Blood City” eestikeelne versioon) [One mic Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52453b58a91cb32521c16fe72f0384d5b7c65f310c1a068c96a099a4eeffae7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEFL71801349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bb4f6bc0f9e78ea68b52ded4f18002c99b048fe6f0e7088cabef010346f78e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/EETI12100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb519e559a188ef07200308f78c9823a07d7537827f1a7e8e9fc998cb5996bd. 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/EETI12100009.