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 0xe300deb583421989e6546a9285b3291556f103c1b9ab295dd9ef309fb4d31a99. 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/fa587ad9-3e96-4bcd-9e39-6f5ca747abed.json and https://artists.proofprofile.net/proofs/artist/fa587ad9-3e96-4bcd-9e39-6f5ca747abed.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 0x8dba2b6994694736c0d68416801f148bc6ad3bd312a8ef76004da9be2d4a5aba. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZ5AB2010465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a95e3cca665b70c6cb69b2f0c23b3850574a137dd801a0aff6468456c6dee5. 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/QZ5AB2010469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b9b4e29806414c527fd86c073fe3128e453bd41ef511a8a10f9a2f49ee8346. 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/QZ5AB2010689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a6b7c069bf95c8b4ee79a1033333c89998448323a3da87b2e80241c0646488. 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/QZ5AB2009150.
Tu Serenata + el Alma en un Acordeon - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41e72751976cdd0b4e7552dba7dff2d3ce5d4aa8fedd881fb61c80770eb7fc9. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:46:33Z), 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/QZ5AB2009155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf317820f3daaaf3572c0cecc53f039a6df8ded40ac1efe1e35a97b6fd1cf1639. 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/US7VG1700413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7399b43456fe122f58499de880f43d27e1549150456391f4a091f813fe223936. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/US7VG1700415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdeab4ea67e5ca8cb3ab7de3c2b3654f15e6c67641129aca5e3a5d25b9eece9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US7VG1700416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aace917924689f560ef0f92d6900696ed1e0b7d934fa7efc1d9ee7eefdb58f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US7VG1700417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93c1cf9399f53a909ac22eb8061297eae12627abc66dca07c9a30e5c0918883. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:07:26Z), 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/US7VG1700418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2882f5bbe9fb8f8dcf405ecaecb721e88e1e2357e2bbd8e593dbc1486c90dfc0. 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/US7VG1700420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd926f21475cb6634d793af2bb69e8aa32f24a2735a71209e748d82a0af110da8. 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/US7VG1700421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efd38156ed1d025f0a650a2573f29084be453be4e1d535687cae78f402cef55. 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/QZ5AB2009764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b5593c3f5a87b0f21357314ac8997dd61b9a5be748cd6dda76acba087b2422. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:50:34Z), 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/QZ5AB2009766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba98d9bdc113454e6b6b88ebfb5feff7172925d1fafae47ea03345fe07c12310. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZ5AB2009773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06be82dc8b63e176dccfaebe80a3235b992fe88fb74049d786b690150f892816. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZ5AB1730820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9953182c91c4b6a8b31502346005dc1da95f06b9b83f70ee99f31b98807d275f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ5AB1730822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd9e0d0f31faca511833d89d3923c0fcf29450b031fa6aa3c276a7f3c488340. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/QZ5AB1730823.