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 0x4d39a328b140d8ccb8c8234b7dddac077e2d6d89ba6dba750aa4fd300278fe1f. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d142e381-1bfc-4766-b369-38f6afacf12f.json and https://artists.proofprofile.net/proofs/artist/d142e381-1bfc-4766-b369-38f6afacf12f.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 0xaa83f6a33b3bdc3927c24b832efca32a81ca4aae17fb93fd4804ab88783e4ab4. 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/QZNJZ2380612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ea14fdde91c59311fefa26d579c96ead0f639b59455ed1c8f1435a74612cd0. 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/QZNJZ2380616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bf0dddb7fdd7df8b4b457473f9b80039f7fed33bebf4e7991b4e6d3198f4fa. 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/QZNJZ2380617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9d6ae744866d2a268a8171dece87adc1a1a81e763dc662d0d8e3202ad59796. 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/QZNJZ2380620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3291cf6c4e95cc671b255a3a3b9703146b4e854a3dc97b9fee976165508661af. 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/QZNJZ2380622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625c35e7ea56e510ca282a8bd59273947ce6ae922f300bf7a2d0ce9230d110f1. 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/QZNJZ2380625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027cbe70a4c2910e6515e88406b2b08bc98b1348d1d29730bda7793da8f39036. 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/QZNJZ2380626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90bdb64d770b6290ecd92eda54e26da2bc1c125fcefb333bed72d11e8ce6351. 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/QZNJZ2380630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7955f765f03f075adb1585d104eb4882fe9a4184616cc4292096a96492188749. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZNJZ2380611.
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 0xa3201b14fc18474c2e05727db04a457984272c2e290ae60ec50effcfef2d578a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZNJZ2380613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad896d73d35edecaab4f32c19ccaf47c748a4ee3d4837642f36b625061961ae. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZNJZ2380614.
É Isso Que o Povo Quer/Força Infinita/Ninho de Saudade/Final dos Tempos/O Que Eu Vejo/Intervenção Divina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4266d35459d4771b8dd5f5c675f2a783e8f7ca6b98394e5d85fb349b26eca468. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZNJZ2380615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc013522e78e3e6d8a988c12423b31258da1519385f51d6706f2fce94ac555d0c. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZNJZ2380618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d79c8784995834944b67b42576d3e3b05ddf8636b0ac61196b1aa56d67369c1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZNJZ2380619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0668e6a68a0ba37ed0284930c0f2287583b3d7fdbb6426d04e9d8376af14e8ae. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZNJZ2380621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12f442123b176c394dde81d11b93bd343ed0474e85349afd0d50bd5f25d0288. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZNJZ2380623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e40efd28a3a9567931b42dd26212f4c3a2430d3b5d34db32de208cfdc73f07. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZNJZ2380624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc821e81eedb313c64050cd36fd215e1b476e7e436125bd47b396e88d2c286c. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZNJZ2380627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabdc2a033d5512fb8cda4efa46239614a9f3efb2138edc33f39568c3319e01f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZNJZ2380629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f2f01615c672678ce812f62644bb45a530128159b7570504d1cf45fae9f983. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZNJZ2380631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1b3d26cbcabd5a43e5304debbf265af410d941093cdb51886b62a0138f7ff1. 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/QZNJZ2359074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079f79ea157cdca404fb2cb2117e5d98d5deca5a75ea9c266069a9a38f1b0fbb. 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/QZNJZ2359081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d2e2e728b85b34834f606a5d54014980ca81a41ad06b2697280766f77fc812. 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/QZNJZ2359082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfd5a21ac3cbfc19108cbcbe81eb44bd14a1052648d64598e60084782fc7ba1. 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/QZNJZ2359083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41507d33311b813ee7ed6a013ee4527e1af11d9af54324ffb456bd6bc2dd9632. 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/QZNJZ2359084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b25bd9e14a6a6f9a9e28f2f1dfbeb6235c5f7e368af9a4afedce0ee5df7d2b0. 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/QZNJZ2359089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0813c2aa44e3714633697c128e52d84efcd817e04a2696fa37b50fb850a693b6. 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/QZNJZ2359091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933f5cd137df09946138155cc564e1a33aa21c5de5f1e30594eee57bca1af2fd. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZNJZ2359076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d080ce73f46f02c29bc1104a7c881c9a9e76c6eef416f90bf992d25f660f90. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZNJZ2359077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f49919e5c08cd1f1138a5ddadd8deaf19ffe4deaeef5f26ab27a681ed147ec2. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZNJZ2359078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719aaf21b0f11f2e8be4f0f25cfbca6ba1a8b8d0496aad58a339b91194654cd6. 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/QZNJZ2359079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f410a6ded606d72a967999baf17e8f2aa3ec1ae3dc96ec7c2489214ae6210a4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNJZ2359080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f53db7f24a11b43b73322dd62f33189981be0205b409a51b958530b0c5b5211. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZNJZ2359085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d9f1cf2ef4751da8552aec4cde552a2da2ebbf5297e595a8a273cb380e889a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZNJZ2359086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f87fea4ad4400ec49a25ea04f8330d5b8294f62d69c86e01d7a228c933e1a14. 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/QZNJZ2359088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adb7bdc4caf75159665e5615666a7015f59a4bb362f90254b4dd478cdb8d168. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZNJZ2359090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec5398f9a0ec68eb63c4f451cdf820e5f89afcfa8bfddfaa6a3319b749238c5. 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/QZNJZ2359092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38fd0d8075e23156b5d7d93186383a478dd15bb755ec102bbb40048e91707c8. 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/QZNJZ2359093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc48fa10e1296e9ece7e8936d7f0fcb5e3d905beea1784d075df8704e541610. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZW9L2362596.