Post Regiment were a Polish punk rock or hardcore punk band. They formed in Warsaw in 1986. In the early days, Post Regiment had a much slower pace and more conventional singing style with vocalist D
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 0xc313e863db9713bd1b0ba0495ffc3855fb10ef6c68d965e5bc460d20858ea627. 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/d1502cd5-4746-4de7-922a-49ce650a609b.json and https://artists.proofprofile.net/proofs/artist/d1502cd5-4746-4de7-922a-49ce650a609b.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 0x165034c8ed2aee578bdd06b8cc07a74aa02f4112d05daf6228fffdbda6ca0ff8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/PLH492092157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b92c8a0b4b3f4d00bc85721e4146efdd0fd3c91023bc9539bae40847c190df. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/PLH492092158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609227acf6be8e6c157a4326f43e619628ec31fbac04b603b4000b439fafb931. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLH492092159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109ad4adb45e365fb6b8f183e0782d67cdbfdba04385ea59d94ba2bd024757ae. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/PLH492092160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaa1859097a5e384d02444bb4402892dd6c04a0dbcfcac98c344b32de9d5b0c. 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/PLH492092161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814e90a556b8df8679bc6becd3a128774e2d1bc08fb25105a4d9e817cddaad1. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/PLH492092165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4613fccf085b0faf40b8b57ea433b273b1a3fcf53542a5347b8d1cc4203a38f. 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/PLH492092166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd150548d780e4ceed1dd35ccebf8d6f08360e6b3ad384267f49bce7205a206. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/PLH492092167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8409453f53939338876623be7019ab7aab5c28ae0f149623ec249801b5c0ac. 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/PLH492092168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0f6722b65e48ff98ec252e4043a0d39ff0a79de0230abd262d4aa6b25e230f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PLH492092169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae72f41f1d54bb5bad898819b21296e4e6c3496669d2576fd0da28dcbd71227. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/PLH492092170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e67779759c43e81839af469059a680b83497a4b7022438134edb080b2d6aaa2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLH492092172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f3656f9d1c069d51ca7b579ac4a8fc6bd52b2ab0bd09097fe8cc89faa7b197. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/PLH492092174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c6c444f3e6d13c62d19dab2c2154bafe519d0f5bd62cf3d7601dbb00678439. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/PLH492066012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825965f9781671ec1a41e5db2cb9bb55b665919f0e2c8950562295d27e9ee833. 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/PLH492066014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefeda77316040605b56aefa81b6c207f5424bdede4cc8fc6fc32bc2065ea45ba. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/PLH492066015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cc981a0df9f9ddc0614565402492979dc405c390505a97eeeb091ed1fb067d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:59Z), 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/PLH492066016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a3f4c5fa04eabaadc3ba014bc4999dbe72283aeb0596e7d4087c3d0364490d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:31:44Z), 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/PLH492066017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a51d73ecf5fdae150ee78842a96b059b6b3f47300162c7826494788b460ba6f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLH492066026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da63c621e8faf9a08caf16c682c14f3097346945ee4cd0e7eeff3121ca4a239. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:15:23Z), 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/PLH492066027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc5cba6a1232355e3aa30bdd8cea366b0754417ce9e36e3f3c0b43deefb4bea. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:21:41Z), 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/PLH492068270.