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 0x370332e248a0a8e26ff1a758ce5003114f84941aab58efb2ad395618395864cc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46d68be3-4c6f-4a67-ad0f-6eab09327334.json and https://artists.proofprofile.net/proofs/artist/46d68be3-4c6f-4a67-ad0f-6eab09327334.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 0x28706f94d7ee77fc19bacf168dec9cd5e1f4a2bcc9adb2e6353a7a0d2e31cbf9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZYXP2311249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fabac52d22e6ed25679ee0443461bb2a2ccab5286eecc090f838fd3b19adf58. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZYXP2311252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94b730d197cbd536e768b4afdbe211ea42dad5eb80054d6a4b86545a91afa19. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:58:40Z), 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/QZXLZ2515466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbfacf4c7db3764a991ac5c951e67e75f7a0fd56024ea39c88e5ca570ad38a2. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:45:24Z), 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/PEMG90510002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a0dfaaf58a9695fe9cc96432b6939daee4fa749691eb72df87a7b8db6175b6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PEMG90113010.
Pedrito Otiniano - In Memoriam (1937 - 2012) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5739471a33f9f3a95766723e5788438ae7c0178809345e0064f8dbb39c5718c. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:08:27Z), 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/QZE921800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b1119b8fcb188f48cb7fcce7424fbc6b883ef6e43305ceb188826343533913. 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/QZE921800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d7d8314f344d12c6908f5a6b77c1c4dddac15bdc44a0701a220040c940d330. 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/QZE921800105.
Historia Musical del Rey del Bolero, Vol. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a326cc10becebe270f72d2b68831bc552241d601ba393aacc3a68be5802bf6a. 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/ES71G2243841.
Historia Musical del Rey del Bolero, Vol. 1
Pedrito Otiniano: El Ruiseñor del Bolero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205a644c3c07a5d18e73ef493c4e8f62ede163a46a9f17c52cfc6d760796743. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QMDA61433946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408422be7b7a6ff91649443b8361779c644b95ba209efd06eb26d9686122cf7a. 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/QMDA61433949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815cad35c995abf7ea09b0d710372376125f98bb967692990f3b19d8c514c621. 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/QMDA61433952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f332c9769b61bae2f1631f24ef6fe2e468cd8657c781f0598d5ccb3a12cdaf3. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:08Z), 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/QMDA61433953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ea7dfa1a7e7e977ed3bd42d340af402941c15c00101f51c1cd9c3b23951915. 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/QMDA61433956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a0dfaaf58a9695fe9cc96432b6939daee4fa749691eb72df87a7b8db6175b6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:13Z), 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/PEMG90113010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372409047e9dc0124cd027efaf613e764b1f67e6a4c462f465a734140163cc5c. 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/TCAFK2179769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1597915248c2ca2007a56302cdf3f58f44b520b13723a7411622a17ed9e1d9f1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAFK2179775.