thumb|upright=1.4|The fortifications and military commands of the Saxon Shore system extended on both sides of the Channel. The Saxon Shore () was a military command of the Late Roman Empire, consisti
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 0x99f5181b0f06096f679c54538d746215481d2ab9ed20bfbac929250f71183528. 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/f57886ad-73a8-4d40-b0e1-5b7c5c7a7310.json and https://artists.proofprofile.net/proofs/artist/f57886ad-73a8-4d40-b0e1-5b7c5c7a7310.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 0xdf6c53fd404a85053a6a0a56b7c1f2b6bfa4bfac42442ef68b2469d0951d669a. 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/USA970506501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a82e348daf20d370e32f0a526bdd96781cf76fb30451adafdb0255d7d11d136. 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/USA970506502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d2b96b505c8aa76ca9a6c675c709ab20bb699c6f0b80c8f9fe32433580d68d. 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/USA970506503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02391dd2d9c427e88ea91b93728abf73d5ada7eb8a9fca5404652c3b6998d704. 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/USA970506505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195eec81a10882eea6a7d4adcb2b4a0766ac72f8c17a330c7bf1ef048778d6b7. 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/USA970506507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e50106635632388d4dc497bb908f4b3ce83342934abc535fbf4a54d7e8d8e9. 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/USA2B0566121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9ff657dd8f7d23006fa69ef3f8e3c9498f8d1f866e60b749bad3bfb99b198a. 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/USA2B0566122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a59277edf7c876e305dbf87978c9f3546059f3c1b7cb9896a9a0ea81d95674. 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/USA2B0566123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c69d77f7eceb3b8252d3a8d480aef52711cd0f29e578854b55b5b98c48388a. 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/USA2B0566124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694f23834dc457804cb12af8e6cf8f1565b9ffb318cd90cd94d618e3f6228764. 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/USA2B0566127.
How We Conquered the Western World on Horseback
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c7c261094247e2e3faa115c3c9a5cd0f02e240ff76a25a5923d70a254479f. 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/USA2B0566129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599bbb16cb9f1fa2b6dba24bb5f5e0a8bc43f84efe873fa7ba155a35d72a58b6. 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/USTC90919889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063369fcfb093ae894118ea52c1e2a66b65157bafdd2b1002a5ce6c176a9b19e. 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/USTC90920114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885900ad43c412d8ef246e90688ff186708c2f5f16c36a00d3e6f5f1650a9704. 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/USA970305702.
Luck Will Not Save Us from a Jackpot of Nothing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab04b74685ac3ff3451cd3cd91d0dd99522d001c79f55985067178fe5d9892e. 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/USA970506605.