thumb|right|Silencer (silver) and exhaust pipe on a Ducati motorcycle thumb|right|A silencer cut open to show the insulation, chambers and piping inside the shell A muffler (North American and Austra
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 0x286f570ce79b6848be163e21ed231fb4115691163faf7e960300f39ba686639e. 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/5f474467-93ce-4e8b-ad58-a2800116fd3c.json and https://artists.proofprofile.net/proofs/artist/5f474467-93ce-4e8b-ad58-a2800116fd3c.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 0x3884023b1786f384e7d6f46a6ca3d053eece43c8e1d243ec8b8c166513f24ee0. 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/NOX9X3416707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3f0e91544a57e8c031b68a4e7f1cb87972749e5762dc82335d520ab147c5f9. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/USB8E1000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab5bc5a299103e58e9a614dd2f2e5d3786a1edc5b15bccfcb930b444d279b1a. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/USB8E1000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4931683d33dd71996fb60578b6287c2ace4d5a27ab9671c3be82c7b52e795591. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GBRF51500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcc5e316413296570b2f9a6b86d1f884417b413a7029d21e01639b680730243. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBRF51500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bd3e8fcf4bbf93c3f93fc594d1e06522faeb8ff1b2cce65eebc8c1dfae1975. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBRF51500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df688eb7b316938697f4f68ffa01158fc06c8279e1d1100845c6f69ed5f1eca. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBRF51500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a72fae6c0678b233ee8dd85831b393395a7ccd74bed7d28657a44ad4c8de45. 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/CA5KR1535715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3e797cb4fcd716152aa62238034d069d21c02483081d19bf7adc0c9caab052. 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/SE6A91838675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faa6cd9ecd0c4b0564f28ec492bd6cf8d0d546121b62c2c7b7e2813c3be419c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE6A91838677.
The Frontier Beyond (Inspired by 'The Outlaw Ocean' a Book by Ian Urbina)
The Frontier Beyond (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8cb61b846453fb449690646b1d63f62bc30ae074285296c3bcad81afd1f54b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE6I31917676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d8ad10c073ca4300b319f5d51ce8789368286d635abb65589172c304bf2425. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA5KR1829991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc471cbaefab3fb629e6baae6f9b53121ebd0d42864c5b5e3161b921005c685c3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CA5KR1903930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2901b600248cec26d0f5e6283a1e213e02686303c50ea47eee00705864e122. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/CA5KR2107246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a14fab65aab35374b9619bb679ad7bf5b871da5ee91106638a594c1ae363cd. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/CA5KR0037174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8a7bef73b44ceb32ccd2f7dd7573a1a6b3057e059262c172240e2d33706ce7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CA5KR0037199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71f3b6cc4d131828d3d77a7597893bdb56dd99b51d94583f42ec82b3835bd0e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB72233249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0559e9b2fa2cf23a12ceef052c5701d99b91d10a9e6180adb7c91db58264958. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ32324606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf973f2b08177807c74b8892fecd2d254167aa58ec2196b279d72e202c9db8d3d. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZHN62397051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceba0312c349e23419fc58de5f1538766de470a33b68b1a3ad13eece1172c757. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZNWY2416377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0607c2df65ed456f8e1d75021a09f70d997877f3ff1c4b528c9b8f242ae8eeb4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZRP42468401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4af52e6e451ad68a251057f7aa4a1a6425fc0005e4a145ef6050759bf3f44e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:07:21Z), 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/QZRP42468403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6554e26e76cb62c26a9b6f8f9ccab330c9ed6a3b7779a884e634434bdb8e1f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZZ7U2485576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ef6bf1475329643d05b5c4a9dc2b59a951d86e8d67ffe04637b1bd045e8339. 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/QZZ7X2480679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3993bbce29310ea4bafd7ddfec61516988c5b3aa12e25797baf788f140572f. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZFYY2527418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad96060a9183a8591c8ec4c3e8413a1cb46bc346a5f4768fbf333fdc5de291ca. 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/GBCJY1205302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc830edc0b7af86232ec71f4c151efd3733abfc9521dfdd7a6d903cc39bfd1131. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBCJY1300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb0ef29005191706878409ca7fe99fdc886c897d18ea2e8b5e509476e5992b6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBCJY1100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747211a94af9d4c81db73ad50546b4b654baa644ea950a0a300171605a8007ad. 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/GBCJY0915413.