The House of Lords is the upper house of the Parliament of the United Kingdom. Like the lower house, the House of Commons, it meets in the Palace of Westminster in London, England. One of the oldest e
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 0x92bdcd0b17aaf4cff89d9e06a931887bdd1200286b25e1b025b7d558dae64467. 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/b3165ce4-85c7-4785-9fca-00d4465772e8.json and https://artists.proofprofile.net/proofs/artist/b3165ce4-85c7-4785-9fca-00d4465772e8.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 0x670b87fe3056b08d074df01098d383858d9863c43c60fe2e39981bb6680154ef. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USA370512800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6674d7129ef032ec793a0f23dac3946246ab4775bdb802ab56d5505d90bab864. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/USA370512807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07f2f30b7ccfb0e0f3b0c035f1aafb55a79ed0b527ff0811b86346a23225fd3. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/ITG270600179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb62e61b7b2104562d96280ccb94b3b1a8fe4ba78205ec0191ae347fa1a01a80. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/ITG270600181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935713e951b296b99820264a4d73160e8da2dc2fe719044377fe52a7c958cc8b. 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/USA560834213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc6efedec5509436dcc76fc1aa55a48837ead475d7577ecd2db7817c910d2eb. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/USA560834215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a91260191e34099f5f4799aae9f5ca52c71c27ca415201b821162057c4ac00. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITG270900396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe62d22a037c076b455aab8c495f4dd6e6c78f4703e051f8f1b02c40d0f66de1. 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/ITG270900403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb66d1bc31097964ec2010d85633ba9741da18918cdfb615db1167fcf8e63d81. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITG271100324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6f5e60d46430a4ae687ed2d86e08d23db67c62d0049053941e61564683aece. 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/ITG271500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497f32e7db722c87dd73f2ec93071cce729f2806802c5935406e3338ac498ee0. 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/ITG271500212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e00bd876de7bbff93d07dccffa68c9e5504f80dccc525ece2d3e1f8d33255f1. 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/ITG272201012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87e26be8f886e7083b069f51c337938d0cd467ed036dc15c5668643e04c1af1. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ITG272400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff777a1d4a5a6f7d3dad583e7d732f9b5e705558b1f94344ac586735b2c10e2. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/ITG272400794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebea4c75d97725a3ba39325126cea3fceb278abb6f4cca40fea356610637838f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITG272400795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11d60be5d447ced8f27f98af21105a766fae6c5be8dd87e2ba6d33ed7a42ad6. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ITG272400796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f618af684b05f596d9fa24e669402d3845d1258d896e968b260da97fca8b6c. 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/ITG272400797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144944797b1149b8ae9beef679d855c325bfa9237e125607fb0d442ee95160ba. 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/ITG272400798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d03b51204e8e03ba953d6d4e5b43e3e09addc006978ffbd91e54d47ee3c39ee. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/ITG272400799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89d24d286421e1a0fe88fa3c96c31a08e0e77f7daf34534d9c43212361a9d02. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/ITG272400800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868f2370184405234534846160387b293b101894a5d1ce5af6d149548b621535. 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/ITG272400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf845b0706f180a98eccec58db8f6b4c87cd1826d46bb70dad0675c73673fde. 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/ITG272400802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779e8ffc8070e644ffe65ac4d735937d863372e1a7513de4070b5083e2915021. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ITG272400803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d17ff2020bfeec246774c4d02230c3d8cd89ef3b77df0ba2d5875889ba2379. 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/USA371178299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc718bf57b9c19c892ce69d574bf9f991f4bcded9d38dd222ed772516c9c7707. 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/ITG270900399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1e9fdb9245b09713f7030a9cf582fb0eb34f4b67206dcf766488b2db12c125. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QMFME1334554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad983afba4f2393ef29be856e03a1aaa9f0f701ce7078363fbe68d15db5e7b21. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA560873574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eda74f047e520c775ee27cf072c00e2b8f881cf14dd541339bc28504727840. 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/USA371017637.