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 0xaff5176b9caabda24724857075f4700a5ac3878d5cdbe8bcfc242f0c64f38768. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5db1654-adba-4db9-8574-eb2f4d4887c3.json and https://artists.proofprofile.net/proofs/artist/d5db1654-adba-4db9-8574-eb2f4d4887c3.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 0x89d43c8e7fa5053252a50ab8e6e7b8b2bfb0d392cc8fca52626a5f92c13e22d5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDQH1815016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3141fa2ecce959e50e80490c7ecf8a2425ea64639c0f7aebfb78895113a4e3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDQH1815020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b5f7a435cf5adba930b3c66cc9700b3563495ee58078e156f57e7984d2611a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZDQH1815018.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1300b2823c675be49a6c609d75538e7c59beeb4f1db3dcc10390eb4cc94472c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDQH1815033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae80c0c0d19d86042a9d64fbff389216d101cb76e1921ecc0677c25dace2a9f. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZDQH1815025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73e1bd84a02d7d7f23447f0a9338a51934c89bd9894a14ed1e3a4562fbaad17. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDQH1815026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1585148d14b39d2db2592c89d3f4ea689dfab9dce923f37b0e0cf2bad3fcdf58. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZDQH1815031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc273f0913d4fce1fe0a3adb0e159c700967e48c233e4b16f1482503157a26fec. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZDQH1815032.
Levantando Polvadera Con Polkas Y Huapangos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9effef127bf409dd24f1c4ba6a54edcc968bcc8e46091bc013b916bf863051a8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDQH1818661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f85534bc9e932d2d457cdb885ecf89a8053524ce8e2dfa5c3b0f0be3eab9b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZDQH1818658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f656720272a36b5ee8e9f9e770a8202937da6fc18a8e632bebf078267b1089. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZDQH1818660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5125f85b4caaf1c914b28e465ad054cdbb9608bec63e750b5acb2f422b7a2120. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDQH1818664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b1417d23f48291308bc5f0c073d4ceb216b4c2b9886cf70eae05dbcfe07833. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDQH1818644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56223f5e78a41d99908a832c3032d913b9b0034cab2061060256a83febb2af1e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZDQH1818645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5fb11cbb5e7cc981cafe9ac235e3b9d32310ca59a114d1eb3d1a85c1b5bda8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH1818638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecc122c545ae5610534de2df2e189267de09f4f1ed3c2da04cf22598f6c4d06. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZDQH1818637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde96f489881c1072bb717037c899f97d088873fdb98fd2a571e3b09114ef4e02. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDQH1816621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedd8f3af15648173d149f63eae70cd85ba41ed54fc574df6abe19e98d102786. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDQH1816623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dafd1353e29cd3786ab1167bd6df10b9c1710c7cf460b7f9477c8a0bfab828. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH1816625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc023a7ab8112f628af16367a9bca751ecca800d41f2d86390ef6589e467bb7c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH1816626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29ba9c713d84f5de629802ae2887e91fd62142af2106ce5dfaa3e8acb3f3e90. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH1816628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaae15c94e91aaad72c696de88a31ab085ecbfb7181354776b2bd8c316609ec9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH1816629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821ef3ce7df5cf47aa5547e276c1e1b58d61192a1ea48b64de52542a00bb4a3e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH1816637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2110249312bdd90e0309778d998d9fb5d4ab3ea5706ef612c044b3fbfa3f63c7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDQH1816624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2d29c5d787acdd9adb4f36fd78ef601fa11d4901eb4a513415127e163cc1ff. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDQH1816639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441bbfe9d8ec7cf93e0a0a526e4020290a66b0e82a94e5acc56af37b50561ece. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZDQH1816640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf838507875df750cbab9367d4417407dabc7f4ff0c6d2b9ce15684342787a0e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6DC1862651.