Queen + Paul Rodgers (sometimes referred to as Q+PR or QPR) was a collaboration between Queen (Brian May and Roger Taylor) and Paul Rodgers, formerly of Bad Company, Free, The Firm, and The Law. Guita
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 0x2e915941bb81099fbd9e17c0d745ed298bfacc761fcd6da2fcda003446c6eb7a. 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/f8131d57-c563-487c-8c62-41c67d19a3ec.json and https://artists.proofprofile.net/proofs/artist/f8131d57-c563-487c-8c62-41c67d19a3ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Reaching Out/Tie Your Mother Down-Fat Bottom Girls (Sampler)
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 0xce9536ad27b2ea0d2d553302dbc5f546d86c99d29ebab7592096661a89473506. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/USHR10521710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443dec32ee6245332c5381f08f8dc3c870f7ed375b2b7d1f489fe0e6edee1177. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBCEE0500337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ade0cd9fef9c949e39b4f2fb519d0f15c3e41895ac8d63f73cc443ffd90f544. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/GBCEE0500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba89b765309c6ea2295d76dda5847fe42085f3740e39bf2569303a01327419de. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:36:13Z), 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/GBCEE0500360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527961bbae1b06354aa612d78d88f5fdb1057ecb6c45ccf79ba0745a12e8adff. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/GBCEE0500346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2a36ee012e643e605c1807faad8348ade4c8ecb8f8daba01e7f323d92c8531. 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/GBCEE0800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7987f03689279a96504643d4637169944360083076933b42631cfee23be4d4. 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/GBCEE0800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3fd0b767111e29ee36037603ca62c1f7cac1101565be476402911e5e4164dc. 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/GBCEE0800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0eef5b4bffe44cf0f56af9799d09e5927edc6e46d23c3b3c0900914990895a. 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/GBCEE0800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3354ff6cfa7e6c6ac5cddba684fde68adfe660e15e226df26f149d546bdc4417. 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/GBCEE0800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d3df3db29bab215ded44ebf141639738fa175b82cf502ac0703c2a028f8bd4. 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/GBCEE0800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf5611e6181f7c228f169009290686a43b0a1d4b5321eb318f99ab0db455b4f. 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/GBCEE0800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323708063bf60a73110689620a2d5a0938da33c33263a7cda3bf11a2cf3aea87. 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/GBCEE0800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993be3850e4c6bddce3d046e12d677461aef874952a4029eb0c8287e3007f559. 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/GBCEE0800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78955c67ad24540c865dee821df92f27953985f0ac12a8566c6a27733fcd68f. 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/GBCEE0800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85bfed4641e1fba8843fb0d77b994be60b6f78ec53b68f85d373d4b667ddf2. 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/GBCEE0800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491575815e2ae36f80b01f12733097885437f591ae78ed81088e392c67bca6f0. 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/GBCEE0800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6546298525bad2048ad9ed30d390ffdfae33aed0fb7bf065835b649ea83ed7. 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/GBCEE0800026.