Mr Fox were an early 1970s British folk rock band. They were seen as in the 'second generation' of British folk rock performers and for a time were compared with Steeleye Span and Sandy Denny's Fother
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 0xf6fcd5818a4875fe0be84de0e83f4cb8ff63291903fc273e899cf1c0d7efbbb4. 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/cf4a8b3d-539e-4df1-98b0-217275431576.json and https://artists.proofprofile.net/proofs/artist/cf4a8b3d-539e-4df1-98b0-217275431576.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 0xd2577460208d72a5e710f83d30c97669c1732a5fa7254ec10d41e58771a4a793. 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/QZ22B2060982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03685effc582ee9cec138e9fd5a1a590a1bb3566443ab37d1a61145c8166d12. 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/QZ22B2060986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7abd87313e08d14cde7eda7d874896870ef3da1437f97b671d942f9a6f6ba23. 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/SE62M2108298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc359939d0da8a9f4d9fbfc8320198e00e39bd6ce4a3ef4b4df7d722c5958b574. 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/SE5752127834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723fe37da4029276609283c3ee9652fb478a1b13478df777804a72714013cb1f. 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/UKR6V2341466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651b4c28b7b5784b8d44ed1b3ed2cdebca039668ae149c6dad224258cf48643e. 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/QZ22B2058488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666ba6190f72ea0e9ba4ca570ba70aa85ea69a796794ca371d2c3a62124efb70. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCADL1810119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826ae7c4941fdc15830f1b356bb2e5572100a6d8c0962187a6ce47c5988faa62. 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/TCADL1810123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4e1a3a5390662f3eeabef15dcd6ee2b06e70de6dda4d3a002bfe5e28b750c6. 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/TCADL1810126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d79b4ee951210eaad80531b1de8410f8050c4311edd7c4dae8984d2aee4ce65. 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/TCADL1810183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7bc52e036c913907fd4c7aeed3a9d37c2505d434afb5ad738c2f660d147c49. 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/TCADL1810116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e6880fe47c02cbb9d6f6a0bc861c366f916057ebcd30b87cf877279fa72be7. 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/TCADL1810129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c30fcbc6503aef5aac1dbb9eacef085f54d953139dfcd9bb51bc9674725de7. 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/TCADL1810133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dce559b87dc8f47efe391e4dcbfeb39e26f2ec0f470b763501f62b9e9c4a788. 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/TCADL1810164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63345a10de6458459af2398b51482f1cc1c1ae5736710876ec1a03a2a858d6a. 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/TCADL1810180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1d4f2b6f34852b456da1fb51f46085ec4da1353dce875ed43aae143380a709. 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/QZ22B2062118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61708a3adfdb915b7f1cc5cfe6bf5099281c1bfa11052b1a9d9c5ee52ce2877e. 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/QZNJY2323352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86329976d77313fd1156bca6301d6cfbcca36c59a853080b500c534ad4db545c. 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/QZJG52374328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcd921ba1d4efe4d259e16082035b0ca9b6426f22502764a00bdd286f34e3d9. 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/DGA072289037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4aef76fc17ead50041da254de994b69d34e34ceb3dca0143966b3a2e744873. 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/QZNJY2331638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63345a10de6458459af2398b51482f1cc1c1ae5736710876ec1a03a2a858d6a. 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/TCADL1810180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a68f84f3e411bafc65ee9256942c799e256223fee95415c8c833e1735e3313. 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/QZFZ72102704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5494605314457546c19ac2981631d761d1487d31aa21c6525e85b00afcacaa19. 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/QM4TW1729434.