PLC or plc may refer to: Public limited company, a type of public company Education Platoon Leaders Class, of the US Marine Corps Officer Candidates School Post Leaving Certificate, a qualificat
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 0x7419ba0e6e7386051de5b85897dd60330de1d1f16b32d2fec2c1cbd17b3678e2. 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/f8a4a379-b071-4e40-8fc3-e5f113a9b367.json and https://artists.proofprofile.net/proofs/artist/f8a4a379-b071-4e40-8fc3-e5f113a9b367.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 0x5d01bc90706000a13fbc1e6b282f46cc38092696b6cac68bf1feb8b61a01d4fc. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/RUB631800424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc945042ace115b7198b9273ebdccba896f8aad5ae3d83a955c21a14507e0f8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/RUB631800446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74c54c9a921ceca0c26f7bc7db0a09e74160a2d27b61f314ac4d05ae345fb22. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA582101919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acb3b738caa0257bf945e6e012061e280933e3759e9a1a2c96be32103a926ce. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR96X1988553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979968cced77a27c87957d64e87593734b783d24f12fa4d5446a32eeccd9d33d. 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/RUA582104233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e44a991f1db59f3270c0dc7b9298d4c50ccc4cc3a74f5256c205a89a0459e0. 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/RUA582104283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb888e539afa75161d6ec1aa90411c4866e53ab269efc74c9988774b1af0800ec. 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/RUA582104304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dff934d69c572859343b81ccfe816d7275cd5b6ee7ca89546bfb28342001997. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:39:38Z), 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/RUAGV2402378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a39ebb7e53f534a8a9af8d1f090706ab13fe5a3554cc6cd5969b3a730b5d119. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUAGV2404905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df687a90e9c2b13987877f9a7dd4fc19942024fc165abae7e048becc8f8ac1b. 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/RUAGV2410551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6371ecdf6ad293d1666766d3b9cdb6ecf8a5b6150fcf6531a38ebeb4426595. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA582101870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fc89ca34a7cbab74e251b264b5d742fb0901132591a476dca0b6f9735bcb59. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/RUA582101871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8803a091f241cef307553dc1fa6e1e9943367649be2bc3ff1e88c5680fcab0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA582101873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed97d77f6cf12c212b73a36b8de7bbfa5bc5a6e7a098b0ad0f809e32c8a08925. 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/RUA582101874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1095215876a9dc4394203f1a56e1f5f3ac5b7484bd57d8eb19e36f68ac9eae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/RUA582101875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdf7e8e640b2a72ebf8195077783f2d2e9830b7690f07d24e3d4b81b9859077. 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/RUA582101876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06a061a7936351ab7cfef11c3005a6036e9168c190f37d9dc08acca798e2054. 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/RUA582101879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40325576a13cb1602b4500f0a627072c1922d136ff486024dc326d61906f51ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUA582101880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b125dd7af533f2423df3faf4eb42c5da7858e9f3800e3ce7bc2f8e3066c0be. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/RUA582101882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4cd8a92f228b0f9330dc309ab517b968f702c80d47ac1982fe1285f295bfe8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/RUA582101883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe632f48ec69c771896fcb36806bb7ea6da07e3daf95b96c4ee6ea17f4098dadb. 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/RUA582101885.