For the Win is the second young adult science fiction novel by Canadian author Cory Doctorow. It was released in May 2010. The novel is available free on the author's website as a Creative Commons d
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d7162b74842ee1123ba4372c15728193fc60deb2d18ac9f440063142e59827. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/858cfd30-cdf4-4583-9889-f3f9cbeb4f70.json and https://artists.proofprofile.net/proofs/artist/858cfd30-cdf4-4583-9889-f3f9cbeb4f70.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db6dbcef3b1931bc92fc3dabc5091649528acf333bdca03b5c3de14c71d535c. 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/USVIC1775201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8662369f7be067147035e7192048b150a1da159afb447a1fbd1fca43391df4. 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/USVIC1775202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f72e7c71ff123a4f2aac2531fc3b51b2b209936a01d4a6a057f37b01a0c31b. 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/USVIC1775203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bea1135003fea4ec047ba0fc5ae3313095eed6228103d60fd5009264806b9a4. 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/USVIC1775205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9377b5cf09cd883a692398b44ec79727f92e3c0ce7d09f30383d11657c0b5533. 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/USVIC1775206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8299c6d2a74e9eb3467fe15830a4462cb7fc281c7e24b210f75d597973285d58. 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/USVIC1775207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a74f0206cfbee16c35a9a9608efca20f3a7fdd77623950708c2b2690e625b6b. 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/USVIC1775208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9177369b6f510eaef876ae638662e28c924d771d97f19c7af499767af56c6b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USVIC1775209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0233b3d98f60646c74fb1e7d3aaf675111ee53aceea1c425a6769d0581c362a1. 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/USVIC1775210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f634e718e5b98f4108ba9e40a647a00a390ea475d3bee79f960fbcd224a2d86. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:57:04Z), 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/USVIC1775204.
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 0xbb15222df8abad149d2254e1389463435151b50d0ecdfc76e104478e00e4c06f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USVIC1774901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fff63f107f85f3fd465393a1513ae3de367ea1c7e7b6002a1a474cb8068343. 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/USVIC1774902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6f48accba8863b11b3210ba3825e13bd9bd03ff853699278961d56b88418ba. 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/USVIC1774904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04548783b1bb99fd5916020db6b42ab4e067172edff0885bd985c5e89112cd51. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USVIC1774907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cf0126788e8b26276ad8ef64e83ce5ecf6b4929f00d57e6b45957050edb775. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USVIC1774908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3f8aef3f8f4f071688ae5ed9a99be3ac40ee64746d845f551eeb48c97668f7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USVIC1774911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa754158dc2f11d87bb31adc1bf8cd3ae4769fff19cc491dcd45d2e00863e9435. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/USVIC1774903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc621e89c61db9c8a941b80228d79551267172f7556764ce77af638d8d7ccb2f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:28:52Z), 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/USVIC1774910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95d90dbc243756b8955138af6bbbb417545b794d18122fa7304763e3221b61e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USVIC1774905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6429d0caf547239443c59226d95b47731208bf08afbc55487988cf184f1ca5bc. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USVIC1774906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb418cb3fcd46ea99e6a95d872331f00c8b580009dc4da28b8538f1d867abff67. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USVIC1774909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c178b2c3e5e2f3043d07612c49c3eaaaa763a0c1fd23c0f5a46b9230b4b9bb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAIA2451979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90ad3b6a9f6393d16adfeae634e184634319cb5dfd900306caea8a285cde320. 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/TCAHT2496203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d37200b40e83c7525337f5a63ed1c63a8fb1cd97d213dd52b7b1491ab4474b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:42:05Z), 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/TCAGU2309235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23ebcafe9981c439d4ae279bd6e3fd51bf78a9420ac152727484a77b31033a7. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/TCAGP2260378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9ecbaa77908765eecda9ae8d4a1145d20da45f57ce785bf3b38562fd31fe92. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USVIC1978101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54979d573e6ce8f356603be409c71f7c3f903624debd80ed34b1121d52284a6d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACE1590535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34993ee68e520dc04029f85e052984c3bf26027d1434e9a9c21218b7277cd578. 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/TCACE1590537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b92ec96083bd3b4342358fd0c0317498d2a74eb6c7055dd5a4812dde60d16d. 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/TCACA1409670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fba7c16742602bb1b7db138541eb7cd154e9b21a67c18abe44918a17b8673f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCACA1409671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da112419c57733b92b09e8658261911ff19cea3a7e0fb28e346fcc081c43364. 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/TCACA1409676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba796899fd7bbd599c21912616ac47cb720ecf3ee3bd13b68a54b98afdca5f16. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/TCACA1409672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92f89e996589c4b1967c5438c4c84fa89dda2f596fd625c622c3ab945da4c2f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCACA1409673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4b679c21363d045a7b15b3a76fbf3819ba7db656b82a0828cd5e7ce8471d3e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCACA1409675.