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 0xe2b57a8a96654ef7cde2718f0ffedd65f07f0a293330bfae070dc3c1c86a754f. 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/f6d93795-71dc-42fb-8c46-99a0c65a437f.json and https://artists.proofprofile.net/proofs/artist/f6d93795-71dc-42fb-8c46-99a0c65a437f.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 0xe50d18d73dd83441194edfb30094974f9bc89caa3b0eea9aba82208cff6f1443. 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/GBSMU0130253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912012248962b71951c636e48ae1d37ce2d558ed4cf954313dc3f7b7485efa01. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBSMU0130180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21c37a1c6096a6258e5ad26586bba487547103fe76b4b7785487a6a5d036d68. 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/GBSMU0130184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2dc1077943c93643cd6a90a3781f572465a7c9f6e515590127e8c2de1e84ff. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/GX5MX2161410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4a0d3155b5a816ec4bce2c4f3ff3e4c9865cf1ffad1a8306464b897f7dfbb7. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GX5MX2161411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1a1d84e79767b1cf26e1eaeda5cd2fe8b5dca259a7c12a69ab794cd29cb34f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX5MX2161412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271783d0d7aeec13373cd07011f86d47d452025dc7d5405692375977dd0e769e. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX5MX2161419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab5d4e94d0863c56258579eb818ec47865af9c9b64e51ebd441f9c0768c9439. 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/GX5MX2161422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac90b036b6830d641aba6c822ee28f47d2b0c4db03dc4a3f5664782edc7948b. 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/GX5MX2161207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61849a4dba3bccdd995aba11256a5941314314bac51c8b5038ff309be928ac30. 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/GX5MY2279290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1395f33898191e15815042f62bce8ba52d6fbc48104507d31307db8fb2ccf992. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:13:43Z), 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/GX5MY2279291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b05f165a1cf588bd10557c8ec3a281d9dc8af6fb60d969693a44a6d7bc7523. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX5MY2279292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x657ec04ff80067cbab87e3cb74bd503681e1c45864116b7273ac6e6bc4cfa19d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:21Z), 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/GX5MY2279329.