Penicillins (P, PCN or PEN) are a group of β-lactam antibiotics originally obtained from Penicillium moulds, principally P. chrysogenum and P. rubens. Most penicillins in clinical use are synthesised
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 0x186cb4c1261b737eb77ddb948266d9014ea03bda0892a9858463950806fa7d10. 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/2cc1f6d5-498e-4851-b68e-5f14d07cde79.json and https://artists.proofprofile.net/proofs/artist/2cc1f6d5-498e-4851-b68e-5f14d07cde79.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 0x3d9aaf7449645bd8a0578c79b30f2d83791fd91e2f3da82513af0fa0d1864279. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/JPAM09805270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923dda673dded210be391654211e17541d364ce4b7987bcada9c6d77f0af370a. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPAM09805230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b1d694e2fc1f750d90ee0fb82b018d07bb0aa0a5c40144d55b00d03524daff. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPAM09801760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467546533225efa2b0f6ff9d7d40d033b40ec8f7bdb04a882ed0d3e507e060f7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPAM09707772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1641a63247e27f5ca948f668cdcdec6d87121470e77d2e883cf081586f3b6867. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/JPAM09805200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2f87f44c2eedd22e18b655100275444a071d8b14cd13ce2a91fb134ccd92fd. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/JPAM09804311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d88ac151a08d732329abeb1280828e67d171bb7becb549de9a40de3783cb77. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/JPAM09805380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd935b9e7aab3f8dc0420043eb92d6b252f738e331d5f5a3008d4a5c927acc1. 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/JPAM09805221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c0b781f1b05563896ab4f6a66cb3b13820c3b63f88eab71e34c54b919eee26. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPQ500207301.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2963b949781905b1c64bedfc627e3ee70a1a91a9803255edf9c87c42734c82. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCJPH1835946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037d6d25408a88c7e548f84a206d157764ed11d1170d88990faf13ebadeecb6a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:00:06Z), 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/TCJPH1835891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e6c79019be301ea2b8f667261c83155f96fcd7e7d7c760051bbcbf456291ed. 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/TCJPH1835916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aca2a7ce4bd5b0dc8db12f1203cc1e4e43168afcf80a04cf01776c0d09c82dc. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCJPH1835951.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b9caf531536699493e2f3fd9aa91803c8e4b7388ed0f3898a457e2ff5fce53. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPH1849921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0fcf8994e0863486a7e6a9ab95456564fa87626b5e5c48d481800e7aa69788e. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:32:32Z), 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/TCJPH1849984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f8a209183a7f672997ae7a874d2c263f60055401fcd657d1f848e2c08fec3b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TCJPH1849991.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1249a8bdb0142b7888c699084ea3669db69a5648d7465357df1a0d6e844fbbd9. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QMDA72422508.