thumb|A navigator thumb|U.S. Navy personnel practice using a sextant as part of a celestial navigation training, 2018 A navigator is the person on board a ship or aircraft responsible for its navigat
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 0x143a1ccbc4caf54e99ffa73865c75c855314149f6eb96b6f8907ddd84a5ebf2b. 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/eb9a1b50-3e15-4d43-8eb1-4c97d06f9ce1.json and https://artists.proofprofile.net/proofs/artist/eb9a1b50-3e15-4d43-8eb1-4c97d06f9ce1.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 0x48369975fe01dcb2a44546633431a94de29c69963b09812bee67e9ac9bbd3460. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR0Z50067153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0551f8f4d24d46b929e988430fc7de5b1767542030c3d9bbcfff879879ddae89. 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/FR0Z50067374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a20474202fcfd1138a03a010766b079c36cd2ad10e0faacc1fb4f18c2a94b3. 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/FR0Z50067376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a61606b11e2948fabece43c62d144faad89ce35d28b480865063f5b9c4746b1. 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/FR0Z50067379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8779722acdcab8eedeedb0576161ff14b76a038e442adf881da00f7f1746be2c. 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/FR0Z50067380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930b37acbf8006e24dc548be6f7ff66abff3bd8855e1cbb9c15091c2f38893f6. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR0Z50067665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c86a5b27007c13eae0188e170f2db0137a37298d2e93944315360bd22e42340. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR0Z50070172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9f1beb2b37cad19205380d692ca50a577ef9d69cf74fe5c9e115f151f3782b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR0Z50070159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802537ce3c1f4e5d482564f8200e600d67c39daf1de2b11d11de74c1713ae35c. 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/FR0Z50070197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a4e4b5c1afcfe29fecde18aaa554d0e01a2544d652ef50e5bf82a5cccafc2f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FR0Z50070199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9407d3da4edf03f49b1e54538aeea1729719b01e7adea96a51e705636ecb6925. 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/DECG30900189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4ec4fa2333b275fbe10d186409fa010ee9681c1b3eca0c026b8a7dc1e8815e. 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/DECG30900199.
Aries & Kelvin 373 present Born On Road x Jungle Cakes - Welcome To The Jungle (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bfdbd8c1ec3821a94577d4a6fc5c9e11eef54534ac69f09af7dcc3044d5c5c. 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/GBFG91900063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4132d108465a941e7f800bbe104011f35b3403392c6a96f9d7737ab76408f5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USA2P0603710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b30efa9cfacb9700a0a1f8c12b0079058451e22edb76f61a482b82bed43877f. 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/USDXS2013526.