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 0x89871bd2bb6b08b3d92c719e0972bf264bb62f9898fb4da55e2436f716e92270. 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/9a0469ae-6628-4cf3-8710-5fe2ec657cb7.json and https://artists.proofprofile.net/proofs/artist/9a0469ae-6628-4cf3-8710-5fe2ec657cb7.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 0x3d7d6d93beb2334ed773ec47eb10c7501a6047790eabc9452a9a0e2c0b4791f8. 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/USHM91725671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de2dd1a9e9dcf853c105ca150e43fdddf33408c9596b0c136d2fcdfed2148c3. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:43:57Z), 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/USHM91729903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b756a0803e11821da198a94c05a0abdf1ee071ff68b50bdde29f58a0011828. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLB841800182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cce634ddef80a2c59bfdc08902e9fa99b2a7ce2be9e8e661d6b85dd2ba9946. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:24Z), 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/PLB841800183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaec25841977049351ccf326e5c3feb19d2b99225a81820e8b8fb10f6e56803b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PLB841800184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b19928d790555bea0bac7c4436a58154b404bbb2e64d9643ead735122ccac52. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:04:58Z), 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/PLB841800186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47229858768b8323bf089d4204ef59c59507ebbbbe30b0b520569d63d10e35c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/PLB842000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063466434eb980e84f0cf31b07235c6a63df53e3bfcb022fc7b0162092a3c316. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:07:56Z), 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/PLB842000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68aeff461a11e36ace7fbfcf2cb844a75c5063a99911820fde44e9940f2a2f7a. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/PLB842000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f54d4edcfa96cbd5103aa6f62d7d111ceeaa485cc545ccaadd0ec698133eb39. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:35:31Z), 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/PLB842000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70302f76eb49167b4927f26449b79367f59156a787d2bcd1616490da5a36f88f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLB842400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1cc6225c45afc8ca5f2f22e5a81f2ed91f68566a62e5ae03b265dad5e6330b. 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/PLB842400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561cb992599ad868e20372d74a5dff64cde49eacdc222a4c2174e948792fd224. 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/PLB842400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eff8851d747538c84d467ae56f392df86a873fc89b735324d28382e3394cbc2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLB842400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e81f99322b2972d8b585744d29260f1f19f09cffbad42d27b75e5a5d39d9bfc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:45:18Z), 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/PLB842400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254634cf4630620ff6ba8799958b5a0aebedad2210d11faf49c2b047ddb104ec. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/PLB842400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a69b942bfe7349d80ce39531325950e24a69d83f34c3c6c331a662be5011fa. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/PLB842400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd992167b7299832a55f3f0a947ccc336fcc83f2cdaa1f4ba2de6f65b10cc1600. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLB842400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9b4e3e33980f493f95af7c6687ead7b7d5cc9995d3f23375bfc2e9c069d5d3. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:44:29Z), 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/PLB842400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0e98da24a5dd3d42638b694bb97de5912a477d91ccf3000393c69d01d5a765. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:37Z), 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/PLB842400048.
Samogongon / サマゴンゴン (Live at Poczta Główna)