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 0xa8d1c5a9afe65045de3f8a3a1ecbe484dbc845d41c9035773c7f04988bdd113e. 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/f750213c-625e-4765-8404-c75698895bbe.json and https://artists.proofprofile.net/proofs/artist/f750213c-625e-4765-8404-c75698895bbe.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 0x0ded35eca6104aa695ee94c64ac60c6a4e5b95258609fa1842eeda168e131783. 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/USHM21571714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0f6b0f8e9db2bcd3401a08ceb0daba57d22d03a74d2605e443bcca2294d786. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USHM21571724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33056c14164343fb26303cc77fc7b7cdcb73ffc197b5e1a8c459d059f604c47b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USDY41621266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628ae5239e60be6197d391228ea049d5ae44ec0489321e3f737846c478f4449d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMPKX1758687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213ea980219f9bcea94e386d4a03b707b24e2c2d311010355884d25b70c16270. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMPKX1758690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6346c589df3ba9958653d871686bf5889455ab0b5d5c00de0e4c3f2955d6d97d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QMPKX1758692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e64d7fa3c983d812e7390a625a122589b89c7124867c4309bb765712e5f310f. 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/QMPKX1758693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae56c0d870920941103feeef3fce3160f9f134ff76ffc0a451e117c13f0790df. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMPKX1758696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60259085df48e744231d3324ad631469860009167ee734b3e03c56a41663a848. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QMPKX1758699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d45f03595ce7aa4b40e7e60cda703754136e03ea5ed72708e8c0065c82dadbd. 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/QZ4JJ1809896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc46073ecd9f21b1c7dee5704659ed0336cd710a38b439b01758baa96a999ff. 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/QZHN31940312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c70d7437c96cbb5296d3bf2281b592a956e4530b26f8014c1fb82b360f72eb8. 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/QZHN31940318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3194992ecf6bddf809e0eb7304518c7e467887b9c6a335b0d2c9504db5b7cc. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZNWZ2096263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7fd9fe4cf4e88ca0cc69f9e1ff41d0004b4c92ea870e8a333cf3c26f56d5cc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES82193233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e99f697548ed95ecf3a0c8ddf207d59eb29b7e079411546fd95a0815dce078. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6Q2114610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131e19162958905fd59d84f524be8b4b206adfc38b74a0b8dc69e42715363f1d. 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/QZNWS2169290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a582edfebf4f04fc03ab528805259ed4f547fb89b13464fdf06b6f3478537e6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWS2169297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634ef508733974e3be6e9e54d9d28491b4018a45605129700f185411fef816a3. 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/QZTAS2157588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1205af08307365f023ed4685a4e035c17e6c36b56787f871fd3e5578eb2a4f38. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:22:19Z), 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/QZES82297952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23aa0f46653911a4a85d13954acb1c85eaf127e36ab2c111ea43d3d1e6941102. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB82291831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162920ec5ebba7e4e05b25e100cc6aa55dabb8936097ae3813a12f61921d6ae6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHNC2313631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1894c933c2fade1eabc3e34bca283d3edf2d4a0464999697766fb4f3bc6da26. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:17Z), 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/QZHNC2313632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fa16f98db6886942519043d2524d1aff2c1e0bcecefd0f0001d3e5a30b1c97. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:54:15Z), 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/QZHNC2313634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291503ff5a7aba0bdd5dd763a499d30be9688adbb4ca6c5a7c8896d97811bcba. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:04Z), 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/QZHNC2313635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59842b23d168220ecb2573a1fa1878a1fbb913da40a22ffbfa80d274ef6ff08f. 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/QZHNC2313636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107030e8c2c2916fc3ba5ada1316c2f06e0bbd04ee795feef5f9f0cb58ee6f44. 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/QZTB42504507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050e6dffbca748e33743baf406b3643eb5a28fa8f792349d33455c538086758e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:22Z), 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/QZTB42504508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64d706e1e2f9d4db3f95a9c9659778c42f97870df39f403c7ed2e6ae8ef1fb4. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:55:52Z), 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/QZTB42504509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca60de4c32e70d609f7d3f7dd9af74ad0e89dbc7c79b106cdbeb6fe90b2d51d1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:54:22Z), 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/QZTB42504512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03908e3f41272bf028111c25c331db41d69d71cba93deefe6616b97ad17004a8. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZTB42504515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f6dc92dca377b84421a3be902df8822df74559228f4ce07da83766b4a1d55d. 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/QZFZ52087017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e7adeedd772ca268d07c2d00b4964d9038f0f4141f6997e92a760f1ccaac34. 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/QZNWW2447775.
Five Nights at Freddy’s: In Real Time | Original Concept Album and Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e7adeedd772ca268d07c2d00b4964d9038f0f4141f6997e92a760f1ccaac34. 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/QZNWW2447775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18159183ea3e7200a257d55254e140a73d43964cb7b13b62d24226ab250c7b5. 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/QZFZ62457601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18159183ea3e7200a257d55254e140a73d43964cb7b13b62d24226ab250c7b5. 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/QZFZ62457601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba55d82838a3d23e6c8620f27f3994e67647db96ab3ff4e21a9486955a63ec5. 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/QZDA42560359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa45b7638fd8dbe4f43655f87b675077c47518817bbb80be20c71d3a5b858e94. 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/QZWFH2364743.
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