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 0xd398318d9df62d3397faf1bb9724b91f40ac3a829872f2eea94183eea07833d0. 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/5698daf5-a6dd-407c-80c8-bcabf9beccdd.json and https://artists.proofprofile.net/proofs/artist/5698daf5-a6dd-407c-80c8-bcabf9beccdd.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 0x39a0ee86518dd9dca0d8f17501b5099795e53d9d62f68229ed2b07debf57a024. 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/USCGJ1207869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd1360c0fe9020b627e5e7fbde6e4c790ed23ae6f09791ff089fa68678f249a. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:23:02Z), 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/USCGJ1207872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b1487f7f8bb0e3ace24b2633fd7213071193ea1299660f749c86ee01a6c70d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHR21489009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493f07e02ec9db983f3ec37f583c8fd6e3479f17e14310e1d65894843f22658e. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:32:39Z), 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/USHR21489010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b1e1829cfdddb40a325f68f57c335db69bdf5624403728d70020fb5bca99dc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:22:27Z), 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/USHR21489011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77e95a1e3d6afd73f3160ba12d49cfbf168fb10d971360bebb9347f42bb9a32. 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/USHR21489012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08272adde3e7b617d17dedeed2b1d6a81483135bd0b1aa4ae656af4acd6348a6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:06:42Z), 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/USHR21489013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6614a01ab2759e73b105087df0481a4f5784119706f94e53e7115679d038d5bd. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:31:01Z), 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/USHR21493003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5f77a3b0e91e13669648c03015d508f2ccca1c7f31344b51e053616c6b6787. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USHR21589008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf202420fbba1c1f99c878bfa96b3e477b4c4bc348d8ce6dd7075cf470c36c6af. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:25:32Z), 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/USHR21789001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7ae712f1c14d16cd191e3a9d0d4f5b387ac6f4444edacaecdb9ed216be29d7. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USHR21789002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d9f335c6daa337689dd8ec6c456f69fb19bcb29178f4f132541788a7ce2196. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:30Z), 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/USHR21789004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9f2fb5724b6906c4fb23d0f1e0c6c0f04b4027b207eb912dba5fe507b73781. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USHR21789005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8dce047a6abcfe043eddb81a7f4970047b1865807ec37e9511386af9836750. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHR21789006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb838f0d345bdccc465c34052c20531c53903d23addf37bed16a0ae24c0b047a1. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:23:16Z), 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/USHR21789007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedb796258e94cf1972b4c927b211acac08021ea96e2a0d103aa20ae10d5aadb. 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/USHR21789008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059362c04df1beb7e61f3f3a448ed75d45e478eb987405000f76d1b12b0facfb. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:37:54Z), 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/USHR21789009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315e503291ffc1489fa571d7444ed384f92acde3245ba61d2168043da7f815cb. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:01Z), 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/USHR21789011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a3945e0ff31646bdb110acb3ad42bc7cf2c5a7493cdaa745847ff8b85c1866. 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/USHR21989001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d4d24233d10c2db7ba91d27a5e3c4458cd347ef9cbc2bb24169fad0c311d7f. 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/USHR21989002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b718435b46601fe67f4b09670efc8df1c3962f7ad5217fa4af57654418a4982. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHR21989003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c5bc17d6fe213a33a875303f61406681517b36d2bdfc880e6a13f905101d71. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHR21989007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6048d35333cee0eafe3f3028a0efd18757a9081844c4c74660bfd96e859a21e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM6N22249787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9667e43a54d2b9a3500f21986239d96afa6422c1c37b6e301c8c8632b5c67d9. 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/QM6N22249791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1d818505eda570f85c670f586970a6bfa931816c6fd23b0384755d852cd8a4. 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/ITH712400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae52850073d0a5ae0b301345a203648a8dde80a979eea79ef31711948e6c0eb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITH712300121.