Pięć Dwa Dębiec (52 Dębiec, Pięć Dwa, 5-2) is a Polish music group that performs mainly rap-style music. Activity The group was founded in Poznań in 1999 by Przemysław "Hans" Frencel and Paweł "Deep"
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 0x466a196b611a4eea749ffedb07ae05bb11bbf6d72176dfc0e50cf557bbe4fb52. 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/610f5f52-9498-446b-97ae-3ebe95653140.json and https://artists.proofprofile.net/proofs/artist/610f5f52-9498-446b-97ae-3ebe95653140.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 0xdbada31111f6f7810caa42f7bd1e78f11e0f7a174911def48c8a040c7dd10618. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/PLC062112291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba9137e1ad9963ee7d4e4349a64cb6ce082b8a757864701a428ef282f954496. 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/PLC062112294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038f1b2445e6cfc6868f1c88b759757690fd4e42bbe890cb93171d3996e879d6. 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/PLC062112298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee81ffd3278924c0824de295ded894f8be2aa1b20bb3c136f3fe280d37913cd8. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/PLC062112302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b39c2b56e9a8798e350bd328538709a14b9aede82a85601d95b45c8d6aacbf. 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/PLC060900485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8d6df9f279e724bb14b725e30fa6584246aad587cdb44f278f87a46adef345. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/PLC060900486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a32267d8b67e5a1255b80e27e3fed5eeac86a4a7909f3afe29dc1816b5572d. 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/PLC061403530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603ad142c0e31f5da9399535fbdbcf7ff83ebc0b9cdca8d2cc6c7448bb507f33. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLC061807001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2b7c2347976a5c547ee62234bf2c3b87ce80703e6270787a34925852ccfb4a. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:52:28Z), 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/PLC061807002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232b91720b2cb5b795565ce55788e8e38b627feb436017e191b936debe4bac10. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:20:59Z), 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/PLC061807004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aa9c6fe287f04757fde7c2408c2194c16c8991a81913b4aa6da45363e67a4b. 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/PLC062009976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3146b7e257ff427e48d359a9c903aea3e143202566b904c9e9e084cfdab1228. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/PLC062009979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a2efadd17845b0d5cd3437f00069bc65c7514646c85791cee68566ec9c9844. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/PLC062009980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ca57ef787f1880e44d5aac5f1f45ab1d2fbad99bc0852183072b9bf1d46d43. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PLC062009983.
Konfrontacje (Polish Hip Hop Music Awards)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ad124c7780cefacd99e4d506a033b945e3b221aaf15600330799227db3f03a. 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/PLC062534631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9b5548369ba6e915efc7bb64979fe5bc5f235df14f786affb4dd24c13458a9. 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/PLC062534654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0b94442bae17b7166ca56e8858c33a4ac6fd580dd9554896eca6fa1d18df39. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:42:26Z), 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/PLC062526724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f97d60872e970bc4c2def1c6a6a59bb200b85b534c34478612fa0c380c4291c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:02Z), 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/PLC062526808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04ef8b2e7aace86f625842810db054fa416690b008567ca4a3b5b0730e29eef. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/PLC062526816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6332d062e45af2b756a8f3bdd3ba719b43469f1ee63fd3f75f198ac9f4116cbb. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:11:08Z), 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/PLC062526725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa535bd77006ee2d0cdb730d920e2ea22542a7d35b8f3c9747b543867c7702ea8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:44Z), 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/PLC062534679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f30035b6af1ea023347c03b652d78e2dca3937045a7a9dbd221e8119f731db. 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/PLC062534706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a43b65272700adcae4213d2f33233a7fbddc1243b74c09a71b271ceb6eb54c1. 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/PLC062385346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb910e5e4e52f420154f46e41acedadf85f4193604aed33e98e4746d7cbc330e6. 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/PLC062386394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20802f533ac58af1ad3b99dc01a5fee91657c415607daa4a5d902c6f579aec72. 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/PLC061202103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bc50009478f1ff5f5373ff526fca10d3c60dc0a9d79003b9f8471a5fa13b6d. 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/PLC061202104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8eb428053e902553abd7a0015461f635873792a6cdb06e247c85b03f9a320d. 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/PLC061202106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7603a3bd9f6be95300369432e199c0b7513ca6772dfa91bc328567fb6a49ff8b. 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/PLC061202107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cf0e09f500fd5c2c53b2aff80f3c657fd91b946bd1acc075983d8da3733c15. 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/PLC061202109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5188404bd4c08f116e4c83b1d24a9b7bdab1b787cca31c40a3a873236e7a461a. 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/PLC061202110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556debcc998c72cbf5c4e9692dc0e4884d6e505241efd70b149a75c246757b17. 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/PLC061202111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85766352d1ade60a1a0208b9b8cb788ee9977c78a73aaf21db2e006cd511d97. 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/PLC061202113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e17f60dc53f9181280a504cc332f2627103957cad96244aa04092de3de41927. 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/PLC061202114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81664f876c37169ce3233bc625b5831e56f69faf1aa20de82009f27b2cac66ca. 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/PLC061202116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfea383fbd964ee28dd7dcbe1edeebac0d32547cd8dd1d64d4de3c854942607. 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/PLC061202118.