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 0xc149593be3d5694a06d27e0c75c3e3363257df54c0b92cdfc2f62e1c1e82c6ee. 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/b481388b-9dbd-49e5-8a26-0f186a92b4c2.json and https://artists.proofprofile.net/proofs/artist/b481388b-9dbd-49e5-8a26-0f186a92b4c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
En Vivo "El Regreso 2015 De Beto Cervantes" Vol.1
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 0x671ab7c003b5a9882f8a67f4b17ae9f4289c1583260995c194b6ed4552e5e15b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:02Z), 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/US3DF1536965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b386c72e9fb3fdaf6d7c432707bc3f20fd5a61be2814a70f7c6cc9b7695a58. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3DF1536968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9633fb7c01e158a663556e4da2adf69b1f321079a35430405f69a7ac9ebdb9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3DF1536969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0642286b4c8ba6179c19759675b103ef59b15451173158c26967633501417d5. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:06:13Z), 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/US3DF1536970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbe6f5e31437072389ca46ed3e1e5a8154105d2c3443107c443a3560dc0c7ff. 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/US3DF1536972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45954f235aaa550ce3ca898877369693c89524a26e28feaaf02674bc54ae9f12. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3DF1536974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30dfe0116729c513901953a5ff8e8d2f639ab246a27114354cfeb733bb825f8. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/US3DF1536977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd664884fafe8ed1b72775ea6c9a64231fc2a87abe1519dbb38df0db4f430ea. 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/US3DF1536978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbf726f9cc0eedbd1a3f214042eb99438978fe461965f4b6e7e98eaff4995ab. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US3DF1536979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6282f5f7955e000d1e36de36b064f36cc40adb0cb449b81bc3ea65bd9c9194e6. 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/US3DF1536981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57a248ca8b69ef647570c4959d3086926cbed1bc1ac839fa4a0633eb86584a9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:39:44Z), 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/US3DF1536983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547eedde767cc70bb2c0e91c1417d8893df8dc5de02081cf13c3dae60ad9d909. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:06:52Z), 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/US3DF1536984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15a3b24272b34d2a93ac332821c666da23667d26fd62f7fab0722ffebb01133. 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/US3DF1618765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d881a18ecf8b6e3bc4c505fe2d41b0cd818931b6996fc5bc35681651c78c967. 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/US3DF1618767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8499054134b1eee3a29774b2a055468182ea2bdb7189ba4601dd50ae060d3f03. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/US3DF1618771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b64fcee1d07d705181044502252374727316ffc0df5149bb50fcc6bf233ced9. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/US3DF1618772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b9feb4122b20a51620a8041c1208dfec27836a8367a7cc78a048f673c0ba4e. 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/QZW9L2323247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e6b3043e86f91fe0d2c7c99b7166e4cf5a98b38c2495c9bbeb11aba42b727f. 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/QZW9K2330893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cf18f8e8b459a55b41f1d1101fe200287e68dafef57add6b2e2e871710d493. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZW9L2323248.
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 0x92d58f02ab124878920ab4f38ed2407cea1a298e5f155a8be3c9fdadac23be40. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZW9L2323250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae60e8e164526f9d2def054f6283334170af08eeab12e84d7ca0d99041811c2e. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/QZW9K2364846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f43cbbf8330cebc5b71de7aedb3402a1e287a04f6423567ec5e1d604d9642b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTVM2356414.