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 0x267bce970cdc2c3811c9bd0b58b2bf050fd6ef9927e2ce468e5238232fb8672c. 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/12295806-32c5-47b6-8ef5-3a21d8f566a0.json and https://artists.proofprofile.net/proofs/artist/12295806-32c5-47b6-8ef5-3a21d8f566a0.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 0x056d9ea1c5ef2d64bd63e3cdaca82baebd86d4106764cd1c79db3b3a44928202. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:38:29Z), 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/QZTAS2179395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e20be7dd53d718f364735076689014fdcd86665a752cded0e48603b99c1cf87. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTAT2145838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1be3f47ed9f4b7457421e2a32c1d82900fed02a5cab750d14594a1f43fce0d. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZTAT2145839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf361c9430e243f1d3172321b4a389397153ca5d88fd0acd39b875085aac6508d. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZTAT2145840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9895742afa98e2f4bcb429aa35e6988ef86957d01e8321cb3f7296e75a167fee. 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/QZTAT2145841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567882dce6f6e5f87231c625f41d5cca078f18a5e99f89fc235037bc075c241f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZMEQ2218934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4192aba6f39485d77905c3921cf90cbab47f2d0739c5b05c3c806637deccb184. 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/QZMEN2335763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e36e6e95b8f84efef412c11334cc975b221ec28a74b6a5d0bac98dfdc49df7d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6G2372951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179616a40289051b247b6430e9916007e8903b023c9e7a090532bf3ed8135e80. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZDA72356395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f138423e962695dd6d5fc0c5f0c0740120473214d06ff59ee5018fe5e380c4f. 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/QZK6P2397442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e99b6142845d38cb5365ea76bd55ad6c5ab64ccfb312dace3a843b33e1ff6c1. 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/QZNWV2340547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af33a3d26cf4a024bc2fe183b506914dcf5a524baf1ac65c92205ef0fd38517. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN82417077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d38ae0c3589f91bcba5fe791914785da88bb457b70555b872f1789f18f9d442. 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/QZNWX2496039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8494a154f17dde2cae154d1009370d110f0eeff9c2875fc3f1457bce057ea326. 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/QZTBF2489698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10135bc4091c2d3e35830daf370997460972f206b92b4d1a900fd1bd8a0a4ac5. 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/QZTAX2465185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1485d143bd90fdc13595a910e2ab6e4e8e664d6598951c09dbf0c30d7842f681. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:23:33Z), 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/QZZ762458780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bf0b3b4197f196604093924f797da5e5f907ffbdf67ae51a65b8bbbe6d7a66. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZDA82473273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10135bc4091c2d3e35830daf370997460972f206b92b4d1a900fd1bd8a0a4ac5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTAX2465185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2f8515ec08bee971ad01d834dd9fbdcfeedb14ed9e5611580f11a2a7328d95. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZES52564279.