2Tm2,3 (nicknamed Tymoteusz) is a Polish Christian music band founded in 1996 by members of Polish top heavy metal and alternative music bands: Acid Drinkers, Flapjack, Armia, Houk. The name comes fro
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 0xc8c37eadcc6783f323b2c70486af1bc4ad7dec381342798ec8d357a8e2c55a52. 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/21fdcd59-ecf7-4be4-b9db-647a64c6e303.json and https://artists.proofprofile.net/proofs/artist/21fdcd59-ecf7-4be4-b9db-647a64c6e303.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 0x9033a8211724109f264c479bdc1aa5761b2555610cce8c89bd867ff08bc2c50c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PLC062117959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc19e4fe884b41a06b6aca38024c46ce2264a61466ca8f2dfff17690ce005c20. 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/PLC062117969.
Szema Izrael, Adonai Elohenu, Adonai Ehad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd97f544240ef15f4600a3bfa1eca24483da633092ee4a2f5b9a3f956a256af. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/PLC062117994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8dc2eed89a9af8b029cfda7eb762d9edcbe4098404d3564f8b6d7a3d88d565. 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/PLC062117996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa358ff8588afebeae96bb98ec8c663075f9902b750992d0df8c3eb22d03100ff. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLC062118001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4754fad9c3bf1d414130908bc1819d1cf7deb5818ed57a1578d1cab68729b1. 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/PLC062118065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b22e0531c8c00f4aee7e4de3d95b09b8bd45f73163c7aa95d7bea4523e0c1af. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:10:15Z), 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/PLC062118066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10335af53f07edb39dd6b836c62d7bfe9a7a9c612e934e1bf7ae2a05657f3c5b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:30Z), 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/PLC062118073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0a04475b1067fff519cb45620d268c496d1064c093fdfe4d2ac33e0980de5b. 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/PLC062118187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd52bb4a39f96ae2ef61be0ce80e5ba02ad9d7685ac6aa298aeb11556ec9486a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/PLC062118188.
Kiedy Izrael Był Dziecięciem (Oz 11, 1-11)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047f296cc0dc02a2ccd56539a2a891df9690070605a04edebe19e3b3cb93b64e. 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/PLC062118210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656cff46a9d8e814debb71b9d3f5e01902a24f78c8195e163f0f4602788f7e6e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLC062118213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0651f861f419c24db70e59592bc32d6a8d9aa61c9e82a638ecb8f9229180806. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/PL93Z2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c151f1aa368aae519b44e659b657572a80781ab35ff5484b07c367d1f213099. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:59:01Z), 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/PL93Z2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc93e901cbe6016c2b335410ae710adcb52f70d911bfd5f0b52d442387a6119. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:01Z), 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/PL93Z2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96256b31ad1cba73923de0a9246a59868ff7642f8a4ec0ed1e3e482c9783dd2f. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/PL93Z2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bf3f87bded71fc7731d7813d8c8a17b12e120a3de1ce7f62b82e7e99a76fe0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PL93Z2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ae42866cc9637da1eb50f7af1ec0b10a4912b5d4102d7d952c91010218b446. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PL93Z2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34144a385e42efaade01a2d339c11dd9c85e8c5d07392145464b75037ef298c4. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/PL93Z2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb14e7f95563b2b9c7b4595b45771a2dc2edce7f908741220b2333778f4de8e5. 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/PL93Z2400012.