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 0x8f7866201fc9eeecfe4da003140820f4ef7ecffa1c3098d2ed7d874100f30dfe. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec8b6472-91b0-497b-bd5c-34301939b29c.json and https://artists.proofprofile.net/proofs/artist/ec8b6472-91b0-497b-bd5c-34301939b29c.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 0x4860ac4295f40267df81f89c5c8feb73caaad6f8a5ad9cbd5ef901a1e468a2ea. 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/TCADO1854484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bec1ed51a4f58f64ddcbb1d2840280ae56dca1e880a5667ea3526055ba129d. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:07:01Z), 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/TCAFM2131748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077ed4af6d862474739ea71ef4a6e2173b764e7c274af281400cd3aab5127c52. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/TCAFM2131757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7780bed4444a9f61e871864353ce80c498ce1e385ca5c1aeb964f16dad39667. 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/TCAGI2272296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ed03d50cb36ca14a250a795bd5ad4e3dcac761a7353b7c0ee58b787b49ebb5. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:25:36Z), 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/RUA1D2435014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b34c199de789e019ee834e598991deaecae3d3d0d353bf5ad997912648673b1. 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/RUA1D2435026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72134d9107b3c6b62020be45076563502f5651a173ba93a4b06c8fa505cb3236. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/RUAGT2516859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ce44bccc375b58a44b7cad98e575d637100ac5539978656bed7cd29e9b6f70. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:47Z), 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/RUAGT2516861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e4fd32737540e119eb0e70629d2cb15226a720595a5fc342cd813631bf85a5. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUAGT2516863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b8b4146693526c9ef1b460340dde81762b509c48597f1181d58ee4d8b91677. 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/RUAGT2516865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1186750def4145817caf317aab0c665204d0e2bac60836d6b8895cd61000713a. 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/RUAGT2516867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6812f064ed48f52f88b237a080e85a7f6d39c620f037425a104bc5e8745f9e1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUAGT2516869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b67d22a66ff6a38fb297c120cda03dfdd07d1ed62caee16cdac49cdbacb000. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUAGT2516871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379f6d6ec0b76046b92f128ab729107b93b46e3443d926bc8bbe94da13f7ea51. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUAGT2516873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b3d9ce59e2ec1e95307d981e0b3803eb2b0a50be9fcf8280da724368879ea2. 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/RUAGT2516875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0c2145292ac760801e7b9ce2a07a6f54cb2357b730dc33fa3347ae264bce61. 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/RUAGT2516877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0287c948a6ca21a3ccde1ed48282396d490d13f588c1cad1799d83b969aa7ae0. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/RUAGT2516879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d3b47df53a15baefb059b579f66b778a1010a54379eee643fc795762d66507. 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/RUAGT2516881.