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 0x69634bce1e1f52ace36d1ec8f6acad2bd45a558a814230365593e94cc1d476bb. 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/ff32dfae-d895-411d-b317-f553a2f32378.json and https://artists.proofprofile.net/proofs/artist/ff32dfae-d895-411d-b317-f553a2f32378.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 0xa13b192b44ac6e4a3c20904af705b29998bb0ab793d5ecca012b563cf1680b28. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:28:46Z), 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/UKR6V2050150.
Virtual Reality - Dynamic Volt & Switch Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21767f7b7afed07248e6b92fbd00d2a3b06e471ae9fb6d441e581ce6cb182a6c. 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/UKR6V2070005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a54bfc02a4a6d3af4dcec4a5592f891e0a8a3c57795b63c0572c735bf3e4eb1. 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/UKR6V2070007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77cde78f2eaeab823a2be33f111349f182b326880a8c7d47c74305ab1926dd4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKR6V2070008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905a770cc741a94922165f1aab2fcc7e0f704f09df412fe3b1401a77278bfcef. 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/UKR6V2070009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5f9e2ec8f14f5412c053fbbc99ca3bf12f83190514844739e3096c49b91c84. 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/UKR6V2070010.
Transformer - Space Cat vs. Black & White Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa433d9f7f0d6a2d463dd2283910998a847659e8ed68c2b6f8c6052f875f655ce. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/UKR6V2070004.
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 0xe904ec00801089a6ae6ac6b3759acf4b8b1d9b4216ef1d25d4f1e4742654e631. 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/UKR6V2070006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0737634cc91b42c419c9ef8a98f81dfa96731a0c6b343027721c4c1fc8e55b9. 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/UKR6V2074385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138d3bfa48c85c9ca83e1cbf5c65adb7843acc3b8417bbbe7f1dbea09ba9653c. 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/UKR6V2074389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419d7228bfe12007ace11588225e866a7b77be61ef390486a8680c3fd86bb96. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DKZVA1360284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2c228dd5c973a6831a118250a474e677f8f8206fcf8c5e648f8767d642ceb5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USQY51606112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7835269da895d3cbe801f424d7cb0dc5fc9de02655684b11cf971d193d25bd12. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKR6V2281321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979fd31058b0f6460de044b744ad85fb1bc1601facb6c39dfb739b70e9941c0b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKU932400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624e08661f0574981ce99253214cf30fabe597ee9a42b5724ffea02a964a42a8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/UKR6V2480830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de45d72bf4922de33fd95b92ffb03a601da2feddf4f34b1fe909ef9f242335b. 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/UKR6V2483326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d7e9270e8b9a713530b234ef08b830ee76fdbbdc06f597c091b13ef786c394. 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/USQY51268101.
Clear Test Signal - Artifex Remix - Nova Tribute
Clear Test Signal (Artifex Remix - Nova Tribute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fab2945a0f6403e8dffc31498c9f2524ce88e8c56dd0340807b2ad020d1c30. 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/UKU932321378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610b57de6476e70bcb1767c8136017ad9b01dbc215095458ba84f747e2676177. 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/UKR6V2380422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46da4487d45b711ff035d0c8c2db11b9279fc148d6469a660060b5f6b65f8b2a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USA2P1806408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ce5aff96a587ddb6833d781f547196a3f782bc1d86a3b575067ff2672123a6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T20:51:38Z), 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/USA2P0611948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6aa26a05ac2f76c1951557297c06f8ab5de438132e2e8d918db16e6b6a3a72. 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/DKZVA1861888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419d7228bfe12007ace11588225e866a7b77be61ef390486a8680c3fd86bb96. 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/DKZVA1360284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1971e8e0a38489eb0554114d8025b6d0a76d60ea85d5920684addb27462c55. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBKQU1976111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb54c9196d0f46cdd265b37f51db7eba2fa972c6cf95de50f5da146be9945e41. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USQY51754415.