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 0x2a30e45d37a8deef002857b26661525daadca8a6b4bade2b9107c344e0505ecf. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e279b852-53e6-41ff-835c-5a9ba8fe2876.json and https://artists.proofprofile.net/proofs/artist/e279b852-53e6-41ff-835c-5a9ba8fe2876.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 0x0052e4de21a62be6a297068244e290800bfcf6c0dc440532e971941216c7c9ac. 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/QZK6H2050743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7c6bab7bf5b204e70b7188db30855677c636a7da0e28670a42a36cff77cc05. 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/QZK6H2050744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3091b11c03897954f79984cd486ec69b5a356f12990f4440d0e6aade992e8a9. 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/QZK6H2050745.
Earth Tones - Zeitgeist Freedom Energy Exchange Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1d186fd9930f5287900b89ed516e8cb095c71af0d037b7105d27f6a898421e. 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/QZK6H2050747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe82bdfa65415597bcb7bc8f17212e69d9175d5c3cba947bf94563c30842900. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZFZ52006977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f207e29338a5e7561e2f33711bedde883b8257394cbe57698c81220d84a0ae. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZFZ52006978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab47f5cdf40153caec807fd77d1ff91af4c4ac103e512b49b749719f237f8708. 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/QZFZ52006979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3d8726a5d35ee33d54583497fedb0fb531c1e0dee0ac15bb99050b5cb45945. 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/QZFZ52006980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535fa7437897224fb6b2f3e360c83a5e4574514f14f57187803e8524a91b1d3d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZFZ52006981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d16c8b9fef9d2cfbbe5ca471914a39901df43cab7856242dcc75850a6e3510. 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/QZFZ52006982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae18e87ee4c6bb46d04d91470fdd0f35c230daee63d7d47cf245459dc396f625. 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/QZFZ52006983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56c8645d65dd79011d6282c87f848c0e8e9d978f01350adb2024e3e02b3712e. 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/QZFZ52006984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35f6ede2bf527e8e4746e76e67213387438bd09ff43fb8bb6186c7dfe374426. 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/QZMEP2317815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6045c50a504d6cf44802907aba995ca71bf9be2f2756c745ccc99a47ab736f. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QZNWQ2324769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fafb10668479865b716773f8a1dec80d6776bf03cf8f79f241f5212b929e5c3. 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/QZNWQ2324770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83861d16514a678d3971142e1201ceeff3062375cbe696235dfe6de8b3325ed5. 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/QZNWQ2324771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35f6ede2bf527e8e4746e76e67213387438bd09ff43fb8bb6186c7dfe374426. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMEP2317815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db56bc6089bb6d0fb0f2d8e30906d9fb34c71ec4f3636f2df8e5dce4200bb5d. 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/AUNHZ2100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c59b04c8f9a9ffb0e46f7b5a889e15c7e8c38fba4bddeebab2860de86cb56a. 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/AUNHZ2100052.