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 0x1a819f76a012462072404e1e6f51b8dd58c678cff92d318e4e934eacfb6852cc. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ff86374-41c6-4e9d-962e-58b4e4026885.json and https://artists.proofprofile.net/proofs/artist/5ff86374-41c6-4e9d-962e-58b4e4026885.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 0x9f10386547268819fac166cbea0896caadc581458822be2ef1e93f484d9d292e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZW9K2329787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e3eeb4de2395788af896aa39244e014034897429a3c5a62b06aab89c5e1470. 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/QZW9K2392012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3be1bf82d5e9b6f1bdb7bb5ec9e384fedc69255a0874555d8b9a4654ddf5a5. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/US7VG2469393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361a74a6a063f57179fabdbcad54f9c432c0031ee7390e316a13eb549aade4a7. 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/QZMZ92458266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee740ba354e71b5da12008e06a9d2dcc5dcf265037f52248969d0e29a0d61a4. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:02:49Z), 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/QZMZ92487472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81184a7e32c6d6652250151c232d0d0c3773c693fe161279b086ddea1085b62c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:37Z), 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/QZNJV2458637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f7a826a171dc1a69d1e32662ee4855f1877fef9f5c01e64a560bb8eef2157b. 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/QZNJV2485762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219220146b2ae4153198114374781ab0515d17f37210ba3ad0d04910de09ae03. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNJX2428422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bee3376c3fb5685ff59e97f4077a78c0b8f515de619ab8f87b152827ae85f44. 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/QZNJY2418072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27748e1889f2b472defc2fa1870dbcf81a8594a2fff32fded0a258512f871c6. 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/QZNJZ2473728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3939712545a8c9e64c5574b98919e4464bc3edf653e0bfe8eca665954c386308. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:31:07Z), 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/QZTVM2463293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf27529beae5c9c8dfa5aefa54dcec34cf701403843594e8a205a75451519672. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZW9L2439685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dc38cab694d910ed9c64349779ce04f918c8a70d86a8fdbe5ed8c6a0fa95f2. 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/QZW9M2456539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc81849b6a2d06ecbf154c0a70c8b9759bd7d6549a454a900dc1aa4c0b60a3d1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:10Z), 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/US7VG2582975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717e767c7ece1c43698397dbbf3cf2ef7929667ee912bfa2ba1124b6789bce42. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZGLM2531584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8239891a0c9a642f84825566d8c02a549b1716aba8f48abe8ddd0c76c45e5b77. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZMZ92525983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb54d5382c402b951da6a3d774f50a081aa232878ec478943ced6159b6ff1bd5. 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/QZMZ92554142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc1588cd4eaa6ad62ae1b545ce46d0462d0552fbd4a56441b1d4a7857fbc5ed. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNJV2596356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55fc862c1b0f1205362def36ac367dcd67e46de76926907c8d923620a763280. 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/QZNJX2507059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdcb1d30543e8cc4c1116d4352c2574c3f633b8f523f94d7b00e889e0e9e5dc. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:06Z), 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/QZNJY2541970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aec8f1470867479ed9ef5e268d5565342a52a5d544f5b7aa88d9bbd1f521e7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:48Z), 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/QZNJZ2506097.