Ypogeia Revmata (, "Underground Currents") is a Greek rock band. History The history of Ypogeia Revmata starts in 1992, when a company of musicians and classmates at the same time from Kallithea, Ath
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 0x4e0d6d04035f27812f1b61bcf3d0c7fb3b26eabfe488148f7fa36d7767119d9a. 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/bdc4982a-c6ad-4587-a4a6-14b3b88f7adb.json and https://artists.proofprofile.net/proofs/artist/bdc4982a-c6ad-4587-a4a6-14b3b88f7adb.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 0x5c4c8d5fe6125bb531339d16a0baab9a0c3d1237a938bbe3953ecefad7ab0988. 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/GRM010400509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5953c971c1b1e0f0819cc4fa48dddc1f4920fda44394a53dea71a4d5fb88109. 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/GRM010400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805450f74fd525b7b132e8c0ab9650d415b061aece63525e19d42e867e2df27d. 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/GRM010400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15fc1d5043bbaccb97b61897ee18d9abeb91a584c7261636947647319f58ec8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:23:32Z), 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/GRFM19501306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e48d392a9a022ce5d372483c789c018be40004905c1fa9cb8f761ea401ee0. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:20:18Z), 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/GRFM19501308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af670bbf629127e6d2dacafdb8e6cee24d293ab835df8311325b2d50a279319. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GRFM19501310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260c3013fc764c306e42c9266e6aeac2299f2ccf19259bbfad59d8b9cfa804d8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:09:52Z), 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/GRFM19501313.
M' Aresei Na Mi Leo Polla (Live Sto Theatro Vrahon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529ef65a3b2c6778436d3dc5775329837703d7b8a2617ac242e13c6e1b7dd392. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA370527784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d07eda186b51bb2973cfd5413fc2958aa381973963a8be6193f85bc379eada8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:57Z), 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/GRW010200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4730b9de45d3bd05c234ecabdb08e2e00c3e5f07398f314ffa702efa941154. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GRLE10700503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e35e9c3a6ca329e13a0a2884c0685e49227ec37cfa069b4d5ac3f4a83fa3879. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S1870610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06c0a378a7dca84e298b5c884c9e310cd7fd51f0d4f20513d81066abca411e4. 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/GRGEN2424002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc59eed5d402270cc59c144670f20deefb77a71d756c8e8dcaf829f122d750dc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GRGEN2424004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4a187d65d15edb1c4049b556da4e08f19383c00f2cbeb77e50b1bf72ce717a. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:24:50Z), 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/GRGEN2424011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ac2dcfebacabf3c7bcef4071fe72661686290bd861877a6c5a2b54be1e504b. 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/GRGEN2424016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6be45bc788d710fcf21173cb506a3a364441a9b7b3ad765c5310a4a9a58dfd. 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/GRLE10902434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cea689f81f41754379a9e5f94470130228cd5dc0b8906e46a60f01fcff242c. 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/GRLE10902445.
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