Płomień 81 (literally "Flame 81") is a Polish hip-hop group founded in Warsaw. It was formed by the Polish rappers Pezet and Onar in 1998. The group name originates from the school in which the two ra
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 0xd603a0bded3174dd8369bdf266523151f68145e9cb4e1490f06f11eb74017c00. 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/d8ad29a7-a2cd-4605-bfc0-319bcb68426b.json and https://artists.proofprofile.net/proofs/artist/d8ad29a7-a2cd-4605-bfc0-319bcb68426b.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 0xc3a0594d61b156647ea0eaa3da84bac113ab942f42019ff381c387f4d501faa7. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/PLI367787100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9d8b1b1b0ed3abef8115c32d5902f51e95302df3649c324e435facede56e16. 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/PLI367787140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84938f0a2557155e2640bac5e1fbdc69f379bb60d1424d98b39abc22a71bace. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/PLI367787150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0336574dcd9054a858b4ffa6f4aaabed4a3397c09fa8706da71bd04c340eaa78. 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/PLI367787160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b117bb5d61628b0cd00176dddda0e993fd68e76380032d0798a07717502634f. 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/PLI367787170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadb6a2a68f187a672e87970d27671bc15b61be5078ec8f3f644955c561a135a. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/PLI367787180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94a2c5b940817a422a0bf7b63dfd855c2666bb3e8f7fb81814c5aa614bc87ee. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/PLI367787060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491cf32f9a6632bde37844afdfdeb75b0914d3e40baa94c8e60eca273d77c4d9. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/PLI367787080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b24ae63820eb167dd90133c20cbd85f866dec9b1737680fdb94b90ad8c10eb. 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/PLL371400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aa631936b0d1ea10977ead3b98c5309b1004e32ec2efef57459529e9aabdd9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/PLL371400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae16cffa2564344fc518f112f50b3d9fbc2009baa3e830719f7d084e14c868e4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PLL371400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daf679ce65096ce55bc7fc41ab00ff87f83d0b88fa923fdebc8a679e2148468. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/PLL371400177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551a664da2f818f63424a25d8fccc37a8b5464a58e05d346a9df0d95e370cbb4. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/PLL371400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb372343d36d702244a98b2a145277527de737557452c916b37ea1378fe44d9b5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PL86E1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f40759676c3f2c9376bbac51ec6161e8f048a3fcc3ba2b0b4ad652527e8d044. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/PLA681902497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c31ca25b2a4980304cfd8952683ac7d6cbbef8d9e85fc3ff77faaef5eae6801. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PLA681902510.
20 To Już Nie 04 (The Returners Cloudsfest Remix)
20 To Już Nie 04 - The Returners Cloudsfest Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0d1c2a12eb9cf23f354fd7b95dde2ea933773c26518b6dd4f81d521a904feb. 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/PLI292100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d567056eee4f7f833c4bdc3427eb0adb20954414c475115f23eaa083e8dba3. 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/PLF391400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba73cfac9a931129bea5c9be1483e96ed756300ba7896be9491b2e1e675ec425. 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/PLC061807380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27398f9b1b8d5947c873af7391f1231b0fa907a7707a236f3f9693e268d27b6. 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/PLUM72000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7471c4bb1b1f6b7c2d58a6820a6ba1068558696b047b618a4da547ddee7091a. 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/PLF242006911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ef8065881f57b2e69d3d54dd501a6996bce58a4d320892073286cd170d1c05. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/PLL371400203.
Hiphopowy Raport z Osiedla w Najlepszym Wykonaniu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a4c522ec08dec32985283d1f15b5f9dafd42c8aae29a5cfb5d3e0b60cbfbfe. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/PLL371400545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298920183ea492e2a2d2f90c15e3bbe3e7dc56696e10aebf13ba961fda1f8296. 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/PLA552401047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4499c972be36c1d109df0f1806179a58b938cb61ff92b5ee51aedb62d79e894c. 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/PLA552500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907b8106d31dd12e8b126757c307d03e4644e2abc02759bdff8d189a19829c1e. 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/PLA552500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462eeb066a3c0ff5b6ff16bb2a7dc838a7b20e91cb736f5d86b804ab6b158f15. 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/PLA552500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821c8861c390e44cad05e5a1aacec5cd150cb2ba9cec98473ceb34e63424ec32. 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/PLA552401164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3675ae26cd9ee7e65ba7465cc06849a3d8a1fd6a3ec4bb3587da47d12b095658. 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/PLA552500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa421350503cd6821250b3fbbcd94046ef37351352e79f0a5cd871ef448c902f8. 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/PLA552500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601c5df3da0e92f42305af87c324bd612845d67388425038a4a342d16f8fb605. 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/PLA552500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fe38023592e009bcd0f5a2e18decfa997937b8c079d080fd3804edf5656858. 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/PLA552500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95d05467d36f9ba5dfbd1428f29b02d2d3b04398c3a85a8bd244a0f47fb5d77. 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/PLA552500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4499c972be36c1d109df0f1806179a58b938cb61ff92b5ee51aedb62d79e894c. 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/PLA552500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601c5df3da0e92f42305af87c324bd612845d67388425038a4a342d16f8fb605. 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/PLA552500055.