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 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 0x57b25dbe412282bbff4feb6cd9c2d6de21e0d22bc0dd6a3dacd4308af2c833d5. 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/e9ed41a2-3eb5-47db-8228-72d7924bc5e4.json and https://artists.proofprofile.net/proofs/artist/e9ed41a2-3eb5-47db-8228-72d7924bc5e4.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 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 0x6c331fbe584091d41701c3a89f28c878ef74bd57a08964440b7b5fb71d9e2ae7. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DED712100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf028ef739d2187d1662ffef699fdc2a2dfe0d198c60678a8f78cce5c8b429512. 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/GBLV61639804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3f6cbe57bf061c5883b3c0fa3c40b9df0267d65902a0dfeaa625bf55829e85. 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/GBLV61633129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8d4d78cbb77c47c42dc81753626dcdcd9bb2aaa4836bc7b091549dd10416d7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLV61639805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a82c8058ad96d79f5596cd7513461251f9a0d6bff9c6129c37282ad04492678. 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/GRKM11400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49ee3eb2f12c20b487da22c0856c06600b7ab3b25e97fcb0d8b19b4981986e5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DED710505261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1d39c144075612aa63e7d64f888450f1379e003b69e8a715335db13d826bd8. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DED710505265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36044ce42ce5a9d48edcc76133689f763d4732eb1bf66933328e0952ec162d46. 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/DED710505267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9cc9ad059f93c3cf3f985e649e0976a8bd700b5ab44136bb170a721baa5dad. 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/DED710505271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00447aef1930eb0320dd1a6d426cb17fe76bbf334eafac9202dcd2152b3b2cc4. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBKQU2452962.
Tanz Der Familie - Eric Sneo & Andy Düx Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9125a40bfd85e6d1c3eb6cc8f5594d430710c3208028ab11a212aa60e84132a. 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/DED712400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f753a59daf4a9747e4a38b775d7a4b8097cddbc72af650bbb3903927c5764f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DED712400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fb8ceb637fcf832f845fbb328878d18b6cfcd171ac452e1d3b0daf54fd01a4. 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/DED712300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3280e11e670fbf53f348e47e60d86a8e79ea6814e6ac7d20e2c21d5de8595170. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DED712100119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4421e47f0459cec37cf039c54052812642c24783bbde1d3e1cb0938820a547. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DED712100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e729190d1d9b7857a791785b49c7bad5a52f16ca488a7ac25cbb306a5ef8b5f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEH742152687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98365b836597d050504b8c1b0aee3fb835bbb760da65d5340fc1c4f887d4a97f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLV62006977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d19c30015b39b799fe9a71cbd7fbaf327c149faa3f627dd4ebb83ff0ecc1d7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLV62006978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166af7b2bc81f199166c1d4a9cbf34681e4e4f934e5ac5417d6b23ae0d6c6330. 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/GBKQU2083128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6be8d0c4fc9305bb56c2adec0807c9a335a32df4bb8f1155db9b1b3c042c78e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBKQU2083129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcc3e614326d5b3d691f88e5905c8b4f7c5377c2a284672291239053853bc59. 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/ITS251900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b3ea7532e20850ff95c97fee198c37f58282228423e77bc95f6384557307b7. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEPI82504531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7732cf447c80bad0d9e0a9322d929354e1261a29591178b83b0c0c8424da38ae. 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/DED712500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757450fada69e8d0d6608324f8ab1e550731c289f0ce5f119bb6d992beec9cb0. 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/DED712400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c9c737f7ed120bfb646a419785a029b87108124ece7c8f050500c79a093ffc. 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/DED712400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe386e3efdad9990823f362c50dafa9e04e8232628eaac834c37a8d9bc4ff8308. 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/DEPI82434291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82e03d4127da0331456f610b98d2e916ee50461a8e9f496016a14aedbc0a47b. 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/DEPI82434292.