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 0x811e2d68ae0fed310b32a6e342b8aa32c67f2aa974f4f486cd8342aab70cdc37. 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/fbb70347-f774-4547-817e-93bde9e58e18.json and https://artists.proofprofile.net/proofs/artist/fbb70347-f774-4547-817e-93bde9e58e18.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 0x3b7595f9ba096130c40d2e71486caf0d3b845a2e7e211882251e7bc2a947351c. 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/UKXN22504878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2954e60fd4e73e3d780ace29e2d57438481bdefb9eebf73a6401165c1b5e0a. 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/UKXN22504879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b93083b87f97c0922667782f7df27606bce322e321df52d0608050eec6b6f7b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:32:46Z), 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/UKXN22504882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f4a424be8456476a418a4fc707429fe6e4743c8be0e5c593c838cf6ba71398. 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/UKXN22504884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5be2ea52a10af6b3b0c9b3ea43e810e3926e068d384d2b985e32e1d927be1fd. 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/UKXN22504885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fed2707868a9c896dc5bc09ad986b517d43f9f83d3fc52265bbcb4dd6d93bc0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:46Z), 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/UKXN22504886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d64a6eb0e86615fbc945492ab1308583f08e2cf2408afbf0f37103eb0ab6ab3. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/ATBK71202082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b071ccd7d2d4e8ad8144cc98fb61c9f71c8141a324323aafa399b3a2667361. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ATBK71202086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb217961da3351454213ed83f8650fd15c6e55f5a6bfba0a074c27f833223f05. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:48:23Z), 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/AT1962500362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcccf7a3d8f8643480d66336875ab36028c172491fff4ab8c53ab69557b951b. 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/AT1962500363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cfac34233ec80c829814df5099b0be8ada7087fac9db26b4fbd7cb678eeb6d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/AT1962500683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e77549401a9857d1b548157f9686b32a515418f96b26b04c8b2e926cc002bf. 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/AT1962500686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52f7c9ee90b5f212ef66db529e9b293a7fec620aca61b9c1e8193a42d6e3d67. 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/AT1962500687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6c67b5921ebc149b678f1b8e42233405aac057a4d0aa17d04f1500ba5d8aa1. 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/AT1962500689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5737c5c470ef64b11136b1f9760cf7dfb392e401d16ba660a7319fc1089a97cd. 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/AT1962500930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f2553d0d2cb710eb4760b3bd03327a3af9f5da426888984f75632f6805f473. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/AT1962502170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33381bb22ca8ca3f511eb8ee5f220e2b0f6ccad9bee334a4ec01e3300e242143. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AT1962502172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861e04f9aff2aad9fdccd7612cf1962a98e181c5bbeab435ef7f70bae9ceb2c2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AT1962502178.