Fisz (born Bartosz Waglewski 19 March 1978) is a Polish rap artist. The musical style of Fisz is unconventional. At the very beginning of his career he started out as a hip hop artist, but went exper
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 0x21b9ea1779904266399af3554ba55fe1654e5299d629e9bea3f39c8f1d2a8be6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f25b421-d43b-46f8-ba18-06175dc868bc.json and https://artists.proofprofile.net/proofs/artist/8f25b421-d43b-46f8-ba18-06175dc868bc.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 0x4f981f2a991efd3b65dc0e2eee75be047a2304320b900591bb36c657fbb65c66. 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/PLA680200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c2a9ab659aee52997b743a17ea9fd5a5b0bff25ff77941d091e1e15dd13732. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLA680200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d9ebf098923f8b2a3afb047ccd4e2472c4580d097129aaf030b94243673860. 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/PLA680200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3feca3fb5a5219aa4c15b2d601d675cef516d95e99f0c0c51310d6c9f0662dd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLA680200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21f45709e2698a5754524ddb3fdbea2cba0302e4d4ccb5150498e2da4ad8bb6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PLA680200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fadebfa1393c9aedf7681fa3d9e57b50de53f908fbbdbd285e72ae631c4c0b3. 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/PLA680200279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba98d7d615dbccf4b24beae32061204e3cd31c4e4f9fbebd2b29ce5436f6e849. 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/PLA680100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74869cb349a4b9951f4b9408865f142796e192c81525f63eef710db507ed9786. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:08Z), 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/PLA680100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126fc0eec8426a94197ad07e81d5bfed6e44059e49d379de8a21de75f597077e. 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/PLA680100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3c12d1f2028fdae0ca537373393a9669db40ebc8639243f20a7e87ec157ffb. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/PLA682203019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67b18af11af0cd50acf6494bcec98688eb6a20a09c9a9014bbf1400a72db4cd. 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/PLA391146109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cb181c857758f34fbcd55e7898e82f800445291662d72c0e353665bc31b697. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/PLB382100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cb181c857758f34fbcd55e7898e82f800445291662d72c0e353665bc31b697. 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/PLB382100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ac6ecb87600ccac5292af45f97a19889943c96b7c8306e2549559beae883d4. 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/PLF391400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b7014ddf5c930864e9d19ef248063a562253166dcbd75ef1ef485c9775609e. 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/PLC062120849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200d023df080356a53a241dda4173ae7a7e7a0bc7b22340c90779e6bbe785d3f. 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/PLE951500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f97c47e6da10c880812596c0270f05c7204075903fe445e434365ecf1edcfe7. 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/PLD111800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc864463d69d87434370b025266bf6b116d4f34fbbedc03a461872f2913e31fc2. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/PLA680200228.
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 0xded6bb8d48d7f6b340b5eb02e3b995bb778784e7050c741ab6d28ea58fd9b590. 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/PLA680200236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c103478f8376c6dc32ed639aeb3547964e626e4c90ba68e9fc8720b06e46be5. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/PLF391900370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf140f4e919ccaf6dcd17f895b97d73d4592da3bb1210fa90b043580e18151ae0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLC630800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea6add75e86054abdc7a0b232d33416d5c7d6c210dc24e49d4f745e4fce9906. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/PLL371400066.