Sweet Medicine is an ITV drama series from 2003 about a family doctor's surgery in the Peak District of central England. Intended as a replacement for the hit medical drama Peak Practice, it was not a
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 0xe85482b6d8dd962769b6a48e2764dc0bd6b1f891e8983e632caa17deb3c5764b. 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/fd1d3305-fcf1-4a5e-b0fb-c67b45c1aafc.json and https://artists.proofprofile.net/proofs/artist/fd1d3305-fcf1-4a5e-b0fb-c67b45c1aafc.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 0x188c2287acbd2f783c20b9ffd467524a3650c42cadd6ceda7cdb7eb55205da7e. 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/USDY41977684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21da2232162db641865265a2928f2d0a1f3674e329a6f97f7b633a758edbb27f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM81916029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edc07a667473ab92b1e812909c2c136a13125770609731ada662b652f4396af. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:04:36Z), 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/USHM81964939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e65163b05069bb28ba65125a7091baff52bab1d17acf2b4cd63f087e777b3a2. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:26:32Z), 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/TCAEY2017328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865e0a0e1c2fc8bc6c0043ac340e20a04fef56f562624eab7fa86aaf266b3b9c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZAKB2005927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fc1893ddfb55062a7cfa676a86e26e0bda2360645acdf7c7b9900b876f0e3a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:35Z), 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/DEQ022005723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35198d788fee37c4a124d40be25bff242356ac45fd2e75a6af60587f8ce39fd. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/DEQ022005730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328ae1870ec4c755940f7ef2a2a7df87eb3a81120088dc5fc423d76bfde3f789. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:27:41Z), 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/DEQ022116381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63184103ab5bb84d8942e8a57810ba8ecac20520c0660cfb012b084d4e6ad401. 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/QM3DF2141887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde712efa37233eaadcefe73348a4448df7ddd25de91cbec9bd1daf068fb5995. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:57:04Z), 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/QM3DF2157702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a578a43d22b9f31dfbb0b97ac16ff81cc2551dc34ca664d55e5eeaf54bca8f3. 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/BCD4N2200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744fe8a3fd97734ff0d34a5cf0d570603e4ffa4452e1c8dc7b6ce10ed9253283. 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/GBKQU2189463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41950e9fc73b10a84246944ffec87211473d28f423c0f52128ea526dd80c3848. 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/USANG2028974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744fe8a3fd97734ff0d34a5cf0d570603e4ffa4452e1c8dc7b6ce10ed9253283. 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/GBKQU2189463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a9539dddf419fbf2d610563ae87ab5fa9f8d6706b26853cd45bf378c2caa64. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBKQU2129289.
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 0x4dd9d0c6afa0083450850b8dd0d9823e46eb500b8afeed7a116c4229a47055ae. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBKQU2129288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139ab2dbedc1b2132babbd749487c5dbd866261eaa47f3dca339e768781afde9. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USANG1925104.