1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0xbcdc1fb87f23deab262c9cf102eaa998e8870018f5e7f73f3a37a86b5c2a7f10. 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/05625b6a-48be-4bca-975e-f84b76c810cd.json and https://artists.proofprofile.net/proofs/artist/05625b6a-48be-4bca-975e-f84b76c810cd.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x4f4cc886eb13843f9412e53768b2d4c7c8680c7513adf24e640b512c53d88118. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAED1990529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ece76daf7b3cc6919959606ba949067d1895264855c08756cb48687ae66bad9. 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/TCAEF1950930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36631e982b7df77bf896b3d8814367749890fabbaaa21b1743f3ac8f5ee5aba3. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAEW2046979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a0874092191c5da27b90fb85c20d1c1be9cb8d004b8882db6416ee633e264b. 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/TCAFD2008238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3486ef7e096f15b3e9a48b25e079bf1ff5d586c7a6759c5ac3369c6469e4321. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCAFL2123600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83a5cac322f464381e62cc23629029cf1974f8664efa8e3f9c5ca1248fac7f9. 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/TCAFL2123645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee49f0898ef6de4f511cf2c7739cd34fae44e23a0fc14c24c690c0a1d11cb788. 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/TCAFL2123656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121750313378be4e70ce802afd68928493381c30fa2d3a8befa6afcd8db10f87. 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/TCAFX2174273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615f93516b4547953eae0e64c72a2398d7149782a5cbce98bf45281818f7f473. 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/TCAFX2174283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725ccbd1e406dc54e6293191948a2a5f6fd73452fe8cd49d2a1b488a95568875. 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/TCAGD2255468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b17592b71b2701908ca7cf71bb7602ae3114bc678c54a323d57d272e44d4511. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAGD2255472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9ca11b0e0ce8e99f43e2afbed2e0d6285f061e26a2dcd6e467401ec5c5eed6. 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/TCAGD2255476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62d1f6f5ca72e2af2cda41635c25652e086dd4133d4b7d24ba5dc870268aff1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAGD2255490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8903a9ed4720d1c3129ecff80550917c69a8f4e931a43d261ed6e73897f5368e. 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/TCAGD2255633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585c511e3a525b4e439b969629a33932a66b4c40ef2fa269666272a26863a6d9. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAGD2255500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe022cb3fe1082a67db5dd2c30c9c5e8f51a411275eef63a4995e4b66f1bc6e04. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAGI2214341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9666dd9e8107e3676c2a0200f035d1d567a530a1504284e688815f1523d5da0b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:00:06Z), 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/TCAGI2216130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d560b85c260774cee3c84e22a5a5734cb788c951282dddd4c26b6f17c2cc4c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:24Z), 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/TCAGP2289721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bb4f522475cb8ea3eb53d23d9d78ee8ed9ef5ca06681e22c4f3a3fa701515d. 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/TCAHB2320925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8145542a024856a387b4ef0c0b10cdc69af8fe132c5a847743f9f0bc979d79e9. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:50:43Z), 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/TCAHB2321001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e6b96f0f4c200dca3133762cc947e6cc22346f4311c6c10d806223e60ca008. 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/TCAHQ2372484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab994fc1c98d0b44b0944383623869caa20257488a092c119cc192556790616e. 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/TCAIE2463653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe037f7bb966b48a05afb3166745c4f83bdd92a09175fb2bc028a6c6ef51dfe3a. 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/TCAIL2456625.