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 0x6ef66d60922263041acaeb27169539b573e2f1f67dc38798d1800e3c64615134. 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/ec306b58-65a3-414d-b8c6-0a99ccc335cb.json and https://artists.proofprofile.net/proofs/artist/ec306b58-65a3-414d-b8c6-0a99ccc335cb.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 0x45e804ed22294f47d47d1221beb3a79c748623bdaafa7fd2c1bd31b87e4072a4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAIA2468783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914f81e1e89be9c9decceed5ef1d8ad78c3ee4cd554f38d5ac7cefe6f7906693. 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/TCAIA2468784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceb78a9e897fcf9e746b31c72cf28c3ea15dbb3d5b210ca9abc1b19ef4b8d9c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAIB2418387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1786e6fff1eb6bc3abd919323fbcfcb667848de456dc3a16b3a6c4aa5489a1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:18:39Z), 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/TCAIB2418389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb8e74807a7e898325c833c95e8a7620089daffe184c11b427838edfbd32f31. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAIB2418394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88b8b7dbc937e6aa6c84a80ec81afae8d7859ef9a1f718a8c27d199f974f253. 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/TCAIB2418402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d46d03aef58d9ff3a0771ef749c3c37b89007a01f442ac8437392d6d50dfebd. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAIB2418403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8e36ac5a9f4f53997466e0e74f8ac25b1b8a71c796b2b2960d6a1570ab48d4. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAIB2418408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8008e19f58e0c085989aa055a2a7f2bd76d6679677b178bb2ff3bf42593344df. 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/TCAIB2418414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d617e62c37612f29709043113c445afa713e2ff8410a9e7ea5113cd8fcc637. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAIB2418417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19399cc89f2f242067dc9e6019c53488bf3228746db2ff0dd0fe3beed43eaa51. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAIB2418421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b3db730a9d801c9e583c747818f638529f44a55bb9057bf765a6c43b8953d. 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/TCAIB2418424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4029a3d104bc17c1ab89e229c66dcefde9ee73f8830d905ddd7a5ba65bd96f41. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIC2409980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b07056516b80bcf2488c63e22b453d8f65232fa2da3a71dcd962b21c097334. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIC2410015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ef23946820aa1cc34baa7621b6e09e6d8789b047014921ec2ab3383358ff69. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIC2410021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dcab9948e001bfe60130ac11fd2ad00b7d9c209f20b5ea55a1b3d02638d3b3. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/TCAIC2410037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ad399b64aa693bbbbd2d4e0f314eaa6e945b1404858e867eb398ead75aa95e. 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/TCAIB2418889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3751b8986fef394d6e4406b488c00e52cee23695ac4f22e8526c2f6ae81753e2. 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/TCAIB2418903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c27353dd850b39e47fd3e2c2e8373cd38bfea71f14d617b82d421f9a66f310. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:41:37Z), 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/TCAIB2418905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c68259271e36e390b1fa6138e9729ee1f43f7a3acda09e5472ea6b3c6b9c1a. 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/TCAIB2418908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342ada892a621dd65c5ec10ddf58995e48b1b657452f01cafac24b4f73a8ab80. 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/TCAIB2418913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fc37fee503f3e3eff111fffd42306e488885eba5ba75d17b7a3f6652fd0454. 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/TCAIE2491825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf011dae459f930642af4636bd814b29b0584e20953faaf4641a239e9bfe1b301. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAIE2491829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cabf863ddf9fe95c46ec943040ad57fbd2c6c4dc2f7ccaf85477cdc6e215c4d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:31:56Z), 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/TCAIE2491837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b613b993dcd9186b9870b613fdec0d91a40eb45551adee55edb4248de9966d5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAIE2491845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb3ebbf8b0c1cde79cc3d3d7c154f52ece7aa3a45ba7712c9ba8e6ef9dcbb29. 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/TCAIE2491936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9012d89b96a92c256c7100fe87003b542a05646c802813cd93be1b814dc822. 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/TCAIE2491941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc37e224a6d5b83cb757d0a635fab52a2446d538fddc0399c82fd56045484041. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAIF2491952.