thumb|240px|Juha Vainio, Eino Grön and Olavi Virta in 1965. Eino Grön, born January 31, 1939, is a Finnish American singer known for his performance of a wide range of popular music styles, including
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 0xa1184b7da4cffa7d7dd49c4cc379511636cce5ee5ec4e12ddf1d22fed2777267. 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/b51809e2-fab1-4f60-bd53-d72f79434387.json and https://artists.proofprofile.net/proofs/artist/b51809e2-fab1-4f60-bd53-d72f79434387.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 0xf8fab6a2d230a0476a876b0c0035e060b3b60f1a405d21babdfa00f1434f6e27. 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/FIFMF6100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644a48834c5015d303930a0b87275c32337bb895069dcf85ec0fddff1ad0cc17. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FIFMF6100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fb5ba60cafc7cd48be2fc4a27d64b7f5849735ec6b781c3879c3428ee9d013. 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/FIFSC6600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f70391db5e6246ae8a46ad5e0674187ddc5fc0484d04e5dbb486cff4453d19. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FIFSC6402900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d75321c4f9533f65b18b32c8a7a7c6daf3ffb0ad61f8abf0a0ec8bf5455c8cc. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FIFMF5902800.
Arkistojen Aarteet - Preerian keltaruusu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d052ce3a8d677e630a854cac44c1ff57ac441eaac306afce1860f17633cb2e1. 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/FIWMA0400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426ecd157c4d6a18cf3bf51e6cc8dd3163fce28722150af9f00be7b25ce830ae. 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/FIFMF1223327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e328a4ffdbe0f4f7a4303f51c809135ab540d6acef686e25044593318882f9e. 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/FIFMF1223335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e0f190938e8e50fa7e4c4c3017741d289506036c6c4a568a6d11a26976870. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FIFFD7700100.
Seinillä on korvat - The Walls Have Ears
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2413a7daf68549bd6560e9b992ac22680814214bddbfcc7f4440b4aa1af238a. 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/FIFSC6303300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a04dd7d6a39c6118f482e565eb749f9d80797fc0dcb0e5bd055f4e788530834. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FIFSC6303600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec8d3041877e86d1e92a957894d4b0b6e797b3e04ee81f1ee43f61954603b1e. 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/FIFSC6600300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dffb4cf1d1f95627de4ac1cda0c002f4edb783db37a062fe315e52843d2884. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FIFSC8700012.
Kotikirkkoni - Eino Grön laulaa Tuomaslauluja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9111a911342fe6a82a26660488975aca2cc1ec872f4b6ddc92d0017a5cbf8f5. 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/FIFSC8300019.
20 Suosikkia / Suudelmin suljetut kirjeet
(MM) Jokainen päiväni - Kauneimmat lauluni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e540c5abfb3d364ed6ce5f6549ab53a30411cdff29dd06f37e85bba26d3218f. 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/FIE2P2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25903474e0097dbc4189ad137d12fd4653e9fd6c38ec71393f9e8d62e787617e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FIVLM1500143.
Tähtisarja - 30 Suosikkia / Suuret suomalaiset tangot vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1856254de9bdb508ef8550d7d085e142f8020929f1c3f1c1738edcaa73e3283. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FIFMF9000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccedf885537f7b3de4d07a5064ec7632035e34481ae0bc319a440c5e70b9fa62. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FIWMA0700933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b1ae480764f38e5bf05680868e650805e7a6f0df482516d6c1412a0ca774b6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIFMF5900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6472de4e2d1dca40f2214039fd1816f6a2c97a660534f1d8461a16061089c213. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FIFSC6303500.