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 0x507814064543f725eaabbdaa9da1c02051fd473b143e0181d6e5a20a1545e75b. 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/08ff6a60-c595-47a8-ac73-90332859464f.json and https://artists.proofprofile.net/proofs/artist/08ff6a60-c595-47a8-ac73-90332859464f.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 0x0f81ce9bdb1008301831ab337a3052d3eece2ec74670af9b15ccb5a20178ef06. 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/GBCLQ1300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81aeaf9b66d421b51be0134f215bab75ecf2eb70f7738d2d77a724b6cf8cbf35. 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/GBCLQ1300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df98ffae2d72321dbcb919f097eca938c4aeca5ba41f89fc3893bb46d2a90c3. 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/GBCLQ1300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb168a984830831ffca2b379ef3a83dfa990996180cd2bee0e2f6644838c3d769. 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/GBCLQ1300078.
Divorce a L'italienne - Prince Fatty Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49fdaf5bccb8a110c68885debd5b7100a5435ff6071e2b73bbc6d4cfb2a701b. 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/GBCLQ1300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe849d9f5c9d36d59c3204ce9b22c641ef52bed90ab88746896046a66d8c61e99. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCLQ1300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5001818a8b88de6122ada64231a01f0b08418c72d73a6c5ed60bda46c2785cf. 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/GBCLQ1300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6e05b0bf85ef72b89b82978de014391a71896d768a8276be9211adbe641686. 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/GBCLQ1300075.
Say What You're Saying - Mungo's Hi Fi Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9c1d0cc8a0a6c2e00b547beaeb923b481d7eeae0ef722dc6e59363bf3d1ff8. 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/GBCLQ1300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd625af42d0199f57fce7a98a60868a20518af3fff156348912658ef8cd2cb821. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBCLQ1300074.
Late Night Tales Presents Version Excursion Selected by Don Letts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720fb03d7e7e4b04de60f3c4b0f4e3f7e0497609a62a255df840da4fa41ff7c9. 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/UKB3R2000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463e5284e8060aa80f91a470a7a92d23af86d779d3cfd82eea3ab59be307db5b. 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/GBEUE1001976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0f0587c5783b5e48e2d269aa179652dc51f9105c73b924010877aa6a1c38fd. 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/GBEUE1400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7ff6705dce76cd6492a912aa9e844f2759741af853124200068165d2e79e3c. 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/GBXWN1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328ff384b1ed37b657e2dc40e9458574eecf9ec8b71e3231dbc2979fdf2fd73e. 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/GBJSH1229706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ea74d54ffe72a0ec25c039ee1fef8d80cca53a54de45a348e5ec90c153e567. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBXWN1600050.
Sugar Water - EP (Prince Fatty vs. Mungo's Hi Fi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa231b9e33c2a27b3d1c38f714684dcd1ad58962eec7d73de25af3dee76ff4a0. 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/FR4GL1070713.
Sugar Water - Mungo's Hi Fi Full Length Disco Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8436f6abb4537c1b7469d93a870ea92d2795b38037e8f8bde1fef5f21a76cec4. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FR4GL1070714.