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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f5181b0f06096f679c54538d746215481d2ab9ed20bfbac929250f71183528. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6c53fd404a85053a6a0a56b7c1f2b6bfa4bfac42442ef68b2469d0951d669a. 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/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 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/USA970506503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea3ef46a7772110cc1df20e9a974c99deb5f640da576ce4ba04e76ac60ef63f. 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/USA970506504.
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 0x149ce554a53f96d37f9c3cc16ce4c6cee1c0861826519824e3aecdcf2cbb8d9d. 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/USA970506506.
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 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/USA2B0566122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a59277edf7c876e305dbf87978c9f3546059f3c1b7cb9896a9a0ea81d95674. 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/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.
Isolated by the Secrets of Your Fellow Men
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cac3de97bf5ce1b69ff6ea7909cd29b1545f72c3b6c24eba82ba366936abd2. 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/USA2B0566125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe269c2f52f3d0111fdabe9400fd35ed615207e568f23aa3e8e626aeb8edae448. 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/USA2B0566126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694f23834dc457804cb12af8e6cf8f1565b9ffb318cd90cd94d618e3f6228764. 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/USA2B0566127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca081b162478ee22da46ebd788c66f1219c8142e793bf733bc8fe3f2d00d9b2. 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/USA2B0566128.
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 0x5ddd4f99ea2deaede7a6ad6cb826d9c7c6c2a9094b2c9b1ed483bd39ef8e49e3. 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/USA2B0566130.
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 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 0x1013c5f19526a883966a3a26d6821ce7dd1016d9eda2888c616d5c713c9ce636. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USTC90919936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f37a88310a9c531399613a0b43f42ebcbdf100138fafa68a3ba7ace5fdb724. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:05:52Z), 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/USTC90919938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4543e5033d6a8784e766d8aff9d24be48e08c4ec395530d103e29188d50459c5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USTC90919941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c7a78f17cdd96c5d80fe3307716c4484d210b21f4afcbe1cd4c9b4655d0cb2. 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/USTC90920107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e63e070b97d61695afa6ae2d3b9d1ab08f936861ac6e6c689fc91b52e64fa2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USTC90920109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a88515d67f6ce052a5a67be2c8570a2f2b01c15fe3b7a46b9bfe0151e8be68f. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:13:15Z), 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/USTC90920112.
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 0x7ebb987a5917a9353571e7a29cd88b9858aabfea7582592811f32494291b6198. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USTC90919937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9790ffc1fbe617487b103e27236fac9b9c3be5100e0bccf7565d2b6d40e86140. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USTC90920106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856845ed38ce91728ac24f97c745209b61e4c5c0033c5e41661600791a026bcb. 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/USA970305701.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae847262a27f25e21973395cc65e9e1c12429039e3c2c7dbc6853aa97aa400b7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:04:06Z), 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/USA970305704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101b3e244e683f4704b6987c544f4eca61250a5712aca01420d721afe744aa06. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USA970305703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e7e9eb734cc276c99230a8f807fdf8d0b7d49000ff1d7ddc225a47295a3766. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USA970305705.
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 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/USA970506605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1028be1fdfac7c845dfefa01b709be2f4e803684363135775cfcc0632945de. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USA970506601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae64e8b151324305933cdae5628250c4b7f9ad5e873d8893dca3b43ec547047b. 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/USA970506602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38036ec58c0763db535258b8a76491f318ce78ae4660972c69fa94a562b49090. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USA970506603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8f5ff750fcdfc003ae1f5555aba399f6424877cf2eec54e6f03de2d70c8ea0. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USA970506604.