PLH may refer to: Paul Löbe House, building in Berlin, Germany Civil Aviation Authority (Hungary), Polgári Légiközlekedési Hatóság in Hungarian Plymouth City Airport, IATA code Liberal Party of Hondu
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 0x49a93a9fe840f53daaf17fcf522d533c7e9bdc2a5490bc5e5a2af22702b8bca4. 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/d1065a34-651e-4d21-a911-f2c874d0e3dd.json and https://artists.proofprofile.net/proofs/artist/d1065a34-651e-4d21-a911-f2c874d0e3dd.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 0xfbac356a562cd184ee365349cee0527c4284817a8543bf759fe2f94a3ed6ae31. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DELJ81901767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f6f20b1d31c549f9bae0745bc3314ad623e9c4b91c559fd3b5bc4856e2bd6e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DELJ81901768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5d6d8256f088ee4874c4dff6764a1dce7fd0ce46a781331d48095b6c293cef. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DELJ81901769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8d03c8fac163471918b1c156983d9a3d71e9b207dbc5996aa56d0f6fd5bf4a. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DELJ81901770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61732487741533deb76b0bd4c298b682fa1ce79947ddfdca478b788774cce567. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:02Z), 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/DELJ81901771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03209812e4661aafbfa749e49ee04f5a68d281544d316460fd42fe5e9aa2010f. 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/DEZC62161560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7442db7b34fe83897833e9074db0441f3199cadd199818cc11cf07e2741e8d9a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:04:42Z), 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/DEZC62258444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c178451828c486e72a8c4268033248f12d68e50406ee483b8d0a4f309c4e9b6. 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/DEZC62258445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811c8f6b98d8c72a0714d008a6603dfd805d6d6d99b642dce489e771d928a60. 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/DEZC62258446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf8085ccdfdf6603089332259760321962e63821ddb0c9ac939ab2f10358162. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEZC62258447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fc74c0d3467e35ec0b391c507a85148736a9b30cfda01cb6790394b5c4523c. 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/DEZC62258448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83531bc3a3bcabe05d9d0000fd3c46d0eeaa4ff0c9b8847dac13f6e3fc8f80d. 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/DEZC62258449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598ef909a24256ef8cae9c727d523b0c6ce9c11bed9af26a3cad24d5b1c31bf3. 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/DEZC62258450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629985a26e8d7e5940a5111be892810c3909b06d07965437d9b442dec8e440cc. 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/DEZC62258451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a01ed4167e0e58ae24499db333dabc79d82d07fcb7d5d429d52bf92bb84f9e. 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/DEZC62258452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269aee99d01e21be21b4b03dd22c85f1e6eacae7c914da06699830982d2b2f2c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:40:54Z), 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/DEZC62258453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b524aad82d46313d81ecb79ab81615122b6a9f9aec5dd5de5f2dfc556045dc0. 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/DEZC62258454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b05d89ed51807acb3d7c6ccc157022d1f50baa1173ea23c370e9d79a2084e6. 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/DEZC62258455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aced0500a653a6146d3466ea93b419285426e4989df2ef5706293d08a38dfcc. Chain 2 (Bitcoin): anchored in block 958124 (2026-07-15T11:02:12Z), 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/DEZC62433681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1479d280891ba09c98de6b0d6d71b495830dd781e491dac2da161bdb6f1319e7. 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/DELJ81961843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef6dc7825723cba062477eda6f2caf1d99f16b3fc3e5cd25ce07307e28e78ca. 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/DEZC62250207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388a9eb63689d77831dd8901c15018d286e6511ed3f2bb34cbdfdbb9b62fdf0b. 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/QZTBA2363495.