Towser is a British series of children's books created by veteran children's writer and illustrator Tony Ross and published by Anderson Press. The series is about an intelligent dog, Towser, and his f
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 0x27c4f1154be75309fd1c33ee730c4bb3099194f845070f78d276eb04ea55e6f5. 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/e8fe8149-8b14-466f-bb6d-b82962d34498.json and https://artists.proofprofile.net/proofs/artist/e8fe8149-8b14-466f-bb6d-b82962d34498.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 0x717b32808aee4192f2a07c392c78e95e7bc23b1c974d9ad643df82928482298c. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/CA5KR1712648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28809d6630842814d5f5b6761e0e4d039b3711d10ad42904467a9c40b3ca8c43. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/CA5KR1712653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f661cca824055575cc95a3d8311b5015be10828a3de33dce077276a2008d6b8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/US3DF2054822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643aec0d322ac66e1625069dabaa406ace57dffdbfb5ab12af457eb0637d6b24. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZHN32180216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd2756cc01681f12e95958453fe62e79a0f1e0264cea8bf0f6fee362ec22741. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHN32180218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9da74347bda7a458b0a0ac4b958f4c00d65bf26585c3fe3f190cd154bca4a3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN32180219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd289ffcb07647fb9b4b7d317f3d645f30b55c24f48797ff42136cef1c797fc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN32180220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792ecb8a89e5ccb0e09e708ce7ebc1df977a00b044fdc82756c9fc361914687e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZHN32180221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe00997bbc51037153e5bd4e2d04e6433b76252e569ef5a75dbc7688622c893d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN32180222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc26e825b69013d8c4d7360c17ffbe390aa6479eaf9e7f94ebd3c49401be4927. 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/QZHN32180223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408fa7bb3d1c328b32bfda2a52721fd201ba809ab7031759873b99061fa1df51. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN32180224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284cc7896c6e3b21458df6fa862ab623d7d70d1a96c97c839e4aa4c30a45c992. 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/QZHN32180225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe298a1f4cb05d3882db148a00bb05220676c184108f0fe02d998608257d974. 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/QZHN32180226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679fa77c64470f368a94185009fdd6fff74e0fcb5d2653cef2b8d2067cedf763. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZHN32180227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6625440c4580d8c22a80903f7f508253c32822666497a6032f810b07903bec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN32180228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04bdc0ab366fa604ad3eba5b44ea9a30d4901f8b88739787963466e2769aca3. 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/QZHN32180229.