1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1827fec43a4aa6fc8835e3c31d28ff52a4e9da6dd2e1a90e3dc2877ff24f8efc. 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/ca48ac15-3c26-4998-b9ad-e3e48637bf94.json and https://artists.proofprofile.net/proofs/artist/ca48ac15-3c26-4998-b9ad-e3e48637bf94.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 → block OTSBitcoinBlock must exist at that height 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 0x9c1ea0871e756ca815f5c68c89012a3d257293129e6822197f006bf88b5c7a79. 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/USCGH2027152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d6c15a7e7e90795ec828a2e40c508ba4c4ec34df7b8823344c518eaca7d6d1. 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/TCAIF2480406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae545906962dd7e92489b8733df2802f3e9510d54d9052b0a438cddf3b368ff. 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/TCAIO2437994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0add70190ffc07f0b817870239fae9e30d2704480dd2829d6c901205265a6c. 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/TCAIS2449479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60af199364a6bb2c609d0b2b44b495f4c2530e88d1c7f3a680a25540ce5b5bd3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIU2429390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5b1b8c99151b8443736b9006a16726bbdd1c37007e789524fa071412be6736. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIB2430908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8889a8e73d6b0f409e046293f8d88db0e8168067eb3b18ace2692e92e6dfdc5e. 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/TCAIV2486837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe373b9a12351d9cdcbe622df1db3a1b4300a3b5db014cae0c40aaadc097017. 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/TCAIU2486846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04b3f9e44a10b569eeeafe5554cb5ee176e5a8ae67116de931dcd6a4651096a. 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/TCAIU2486851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3588112fb7219ff7274127b975f9c8be0cc7aec80e6400324c7e20757483666b. 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/TCAIU2486857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae545906962dd7e92489b8733df2802f3e9510d54d9052b0a438cddf3b368ff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIO2437994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77602192d69c939fb5f7181bf3312081ffb053cbd72798274495cbe895145ab. 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/TCAIU2486917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d672072b7779392461f63caf524826f87c7c4f8b2283e1d512fa03efdbd343. 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/TCAIU2486924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96ef041c9ecffc3f5ec1f2dc2ee684d0338e1a620c733230697c3876c86d63b. 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/TCAIV2486935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60af199364a6bb2c609d0b2b44b495f4c2530e88d1c7f3a680a25540ce5b5bd3. 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/TCAIU2429390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0add70190ffc07f0b817870239fae9e30d2704480dd2829d6c901205265a6c. 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/TCAIS2449479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407c155223e0ea8e4649175c642f394fcc21b09e089df5139e0b2263b9d2e3d8. 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/TCAIU2486999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c021a2fe0f88fd582f1e076c10b73006536fec172f65387da73f6bc707c592. 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/TCAIU2487007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6695920d77c8f3518d1a99e24721d5be458ef24441be0e7937813dacb3810b4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAIV2487016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a9b061627a3836240c6c57c7149e54348f50c17c14667c08084a440a9e7464. 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/TCAIV2487104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2a9c20e5888536971ad1798398aa9d04dbfe420220251d0d1cced2051fa415. 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/TCAIV2487107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2cc68db597934cbb4e016fb2c40730c03b24ca4e7f8b61d55457e8667fc0fc. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/NL5MF2103861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc42aaf39ddd782c8c488145c6a4688334091f6b768e783fe1b01c678345e30. 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/NL5MF2103862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3189e6c78b166b828957133a60a312e7e4520e5113806c73e0a80662944166. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLCK42511212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8bea1b4358219c294f4a82c103714236b270c25e2e942b3084bc4f30af6bed. 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/NLCK42416685.