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 0x34e8be8ffbcfa922a3c3239c7eb1e1786959bcd18d5ef9f01286a10f70de9851. 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/d02c015c-0a84-4aa9-ad1c-39477da13104.json and https://artists.proofprofile.net/proofs/artist/d02c015c-0a84-4aa9-ad1c-39477da13104.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 0xc5bcfe8952754639a151edde1d8c23466f887350afe6b64f7cfb82bcb2e766d0. 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/QM4DW1660426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca0b72db64ffc7b3bdee55f3488a86744b9535a22b3ca098a185d2e34d8ac52. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QM4DW1660429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f5a6d43cbe154751df5373d094cccbc7e356fb9a2438ec34a3b386ed1d9897. 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/QM42K1611977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c093842eda8966f19befa989e9527d963ddd55acb5a99f35def18c0132c621. 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/QZAPG1727032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbefca31f12f0b89d28caca7640db5ccce39f56425df1d14b826472dc7936c3. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM24S1802122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c3fe44400eb2d9038b3ca8165f1646b657bf91227cbf5cd9315eff267e2f2b. 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/QM24S1802738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57af5bedf02c5b73e9b074affd02b00ff9136b71a846806c6fccfa083328333. 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/QM24S1802741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8452b6226f4718a17c949c21a039413d7fe3d147175b01442e045d5c9a08f1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QM24S1802742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb4c3bbe5a1369f0573e6b74637b0970d2594e41c69f098bc663c5f7c393bb1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM24S1802744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f3e9882598f90418c914603e7e160c9330b92d6b1b190f209d9564873befc3. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QM24S1802749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb126edf149228819126c0acb8ce884fe238c897eb3beeb2b108de701a0b6d11. 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/QM2PV1852871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dd20465fa0ad9fe2a6ef469a601680a220f1108c213d1520eede2f766bbc25. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UST8K1830047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0ac6fbf975af33aa4c345295326680c66f7b656ce38b6b657fba3e2023b486. 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/QM42K1974253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6e977f2723f44a74a3f704668ce888f2f8e1f7d584bcab670a4fc7de8c7ac3. 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/QM42K1989195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa5b008657fa1bde7741593f3666ec3551b3316c0dc1b47c7f5849e19dc16f1. 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/QM42K1996868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f09687274ad531f82d099b0df5d8a5bcb2c1d5078df5ef6802bb55d3e2e274c. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QM42K1946271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdf45dc59760916f69d857199b8602bc315f1e036fa6fa4b573c29df839dd95. 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/QM42K1922751.
One Ocean (Inspired by 'The Outlaw Ocean' a Book by Ian Urbina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb68419e13f6b0298ea845d15ba83804d72cfa0b86b4cf8398d57335451ee62. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZES72058747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e19c6b612dbbf472e58c0cea4fe041b8045ab63f1945f84cb54171348a77dbc. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZK6K2034966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc9426307e85673a7eae0ef3120f08692fe3bd01d40dfe89a497e744476c867. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNWT2017730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949326bcdfd8c750891a6b8f1b4249ca6d2e1417b0dca9a34bf142dad9e18c32. 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/NL1LE2001714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19db57789464a44e04a386e8dbf4c45bb1370319c995f689d1a9630d1803a406. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NL1LE2102532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be42f7467605b1baaa397f8ae58f92441cda5b57dfdc7ec119997acfde5a8ee. 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/USANG2250483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbdd5c17fb688003f5eed8268865d54c3f88108bf6839b99ff4df320b78222d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USANG2265753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf490ec5d8b93956f7581c6b69f62bc1e91d45b3f28d2919d66ee665f484360ce. 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/USANG2265754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4befce4ea05760553c782b8e2824da6a0523a21dd66e012bad98bad5d452d446. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/NL1LE2303461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcee548f5d48d865511cc01b54e73e76c5bf4968fa7dd995ca75f54996a1f81. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NL1LE2503737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1808105115799aed4ba441ce4fd81472a3857fd9704dacac24fc7e3ca870b4a. 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/NL1LE2303443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb56510b9cb0c2b479f0e69d826cbf4b06250b2d6cabbf803df8a0485840bbd0. 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/QM24S1820722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf9b919634743eefe56c9617935b28564f769f8c44fd068097bff84d1d7382c. 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/QM42K1779998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb076bc2415ccede28cca2d51a40d3c05fbfc68f86c787db5d2d5cf51d7acfc6d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NL1LE1900342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5722c83f4a15f46d953875a601a9011020cafed2f4325488702127b9961f27e3. 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/USUG12104469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750f9224239ec78a9a66acc049f0e60414887a2b667634d3a31a8ea23673712f. 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/NL1LE2302970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19db57789464a44e04a386e8dbf4c45bb1370319c995f689d1a9630d1803a406. 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/NL1LE2102532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c97e070b3e3ba22ca86941bf8df483a6cb514e0b6c029279cfb6cbe98e2efd. 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/NL1LE2102504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a255ae036360176ea44e14ffe977f525cf0f8171b105d5438aa82d6f12256e8. 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/US3DF2233182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd12e1745cf69e1b9d946d9eede1fc7cbddd3eff5d7f5e84e18c7dc62a0e358. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QM42K1729121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa978de0d01c3c8e078fb8186cdf9e29f894b2690d7ad1bdccc818a9f0da28444. 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/TCAEU2087113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa895ec64e2b3a2d0e5b14cfe7dbd6f9207d20d7209ebfe2aca0b832b59df3125. 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/NL1LE2101954.