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 0x88b06f8871cd42c3dc545c53de1c4e7db9a9819a51e8e6f322710d0beba0fa1e. 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/5a5a51fe-468d-4271-a3de-f8ee53d70432.json and https://artists.proofprofile.net/proofs/artist/5a5a51fe-468d-4271-a3de-f8ee53d70432.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 0x3171cf40b5f5663b163a3e076d6ae02b3436d7c7543d9855a30efc25584410dc. 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/TCAGK2229117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aa9ae2e4d9150678a08a01404a28619f4d34b95f2d5b21cc5cff8e8a8cb204. 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/TCAGY2329862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39aa24834ccdfbdbc921e34f84c0c3f25b76b3e8efcbe7fa349945a7d332a77. 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/TCAGY2329872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd448266ce76471eec3282e9a5130c2f2d4fda9cc26a38848e30beab096bc10af. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCAHL2321632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77b05bb00f19080ab5f7e960068526b325f7efe430b773c1b776411d95e6936. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAHL2321636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d70f6382209a4294a7392131eebc38b225365abaf43acc562d4ba381494ce8. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/TCAHL2321638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9998e9e070eb5b0f186a3f26b02b7baba2e411c260ad58354ce86b999dbd52. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCAHL2321643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3c90e01dd28031c9e7e93dc1256a6027a5bab61040e8fe2b982d4e923ea3c9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAHL2321656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc703bae6da2f740aa3924f6f8454d6d547f274d2955ce7edb0db911ed7cdf4c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/TCAHI2379054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63358419f070718b959a49dcb17010d04b9f705449ae353bd3c02618620da48e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAID2411898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e6ea5ec82d2e3c499d977fb923056252ccfa1f9635f4101d8c73d2036423d4. 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/TCAIS2491736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc680a1213e345b891f8090ad4468433a12e5f0039dea7b001f1f6cb1838e9ba9. 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/TCAIS2491744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d91ca65dea6993d13cce1060f18573230e51e7d06366e3bc458a5ce55d11cd. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAIS2491764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ede9efb7d9bba12ecfca93c60aab32cf0b5c0e0565a7a9c5a683dd71971fb2. 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/TCAIT2491779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f8cb0363d415ed54dedea44942ad08278e9280d46c934a93ef2e3d5ba3e36b. 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/TCAIT2491806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392de0d789d8004e972c8403900422248f18e8673d689cc3cfdebbce9e30d792. 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/TCAIT2489680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33018816aade5cca8120b390034e8742077df7db22cb42b5f254a9e8d8311152. 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/TCAJI2541064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dccbcea589493dc42a4b45697c83e7b0b69aaf2e0feea56f4ef9270580df43f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAJW2543346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fdc840bcbccee94c85b619b63d3460bb046a2aad918e7ce1eec94ae4902be7. 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/TCAJW2543406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb015d6e0c4264bdcd50f54aee8a92811d88b4f158b14157a9b067e3aeaed02eb. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:17:45Z), 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/TCAJW2543431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec97df2d23d307839f9e178654ba53027242bbd9b0276039b2646b1bcacc165. 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/TCAJW2543448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb722f05fa22f2f05f0f65b4e44af3d6ee60a45e17e93d3b59b245f8b2f59908. 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/TCAJW2543472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28d34a4480719a6479a574e6e972d92f57d631f59f2a6f3d5c5575f2d1b92be. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAJM2588664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e330cf70ac86d0757a8e2a935bd0ce676b5555a5b49b92f4a3c5e4bf04cdb7f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAJW2543544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1abdac0e23149ead46ed1c50f8ad9e507e198f76015cb6bfa5b0baef3e1bd00. 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/TCAJT2561886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dd3b7e656691e47d4db5ec5e403261fdefef0c77c206e15928883e3f7f6a3c. 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/TCAJW2543620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf65b0ebaa30fd3df909283ab5c3761c1ca8d69c29a00c7ba961c0d4706940f5. 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/TCAJR2553868.