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 0xb17961a43c6d6281f96d57c4db9a5180212ea574c37d1507a90968f2e0a78a75. 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/7260537b-d141-4d1c-bb11-7c5455b8c2e6.json and https://artists.proofprofile.net/proofs/artist/7260537b-d141-4d1c-bb11-7c5455b8c2e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dead Demonz (For My Grandmas: Album Preview)
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 0xce8967d5a3b1b08b4956108627cd5db0102c3ea2d382698af9d1cfc111726884. 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/QZNWV2392350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8d1c31083f9cd51443a90d8c6c069cc2252107f33bc7db00f2a1ba3137e8b0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN32493511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a901576bb3430a9dc6e5070f383d67f534cc3cf3706f60eabcc8deef48d8be6. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZHNB2460829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b22c1f957def008baad377c69b9616064ff883e8f178bb500dbec1c0591a0a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN32435005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc888e265284692e857738f6b86ac120e1191fb7c9ae5d80e5ff5883c4eaead2. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZNWR2426025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1922a6e369ecc05c536c43ba497443e919eb6b7657e9166cb32a198ea7131f29. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZTBE2460995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cb0a03a4fcaa1be75c3db0186d2f21a04528270f20586a80a1aced05cc3112. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZWFH2476042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e4f65119d6220af2dad992e0dba29f5184ee5bc5b7cbae60d3f01a58f8a43d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZWFH2476039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cb0a03a4fcaa1be75c3db0186d2f21a04528270f20586a80a1aced05cc3112. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:00:16Z), 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/QZWFH2476042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed1a873f2202b2cf5ad95c0809a56cb229df4e6bc7335eb572765d13560655f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZZ792429922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f497cafe6430d280efb9a13db7575ded497c63ff2a9841025b7da0a861c8c2f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7V2434364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71e82f98c7d3af87b1f33dc47061bcbe852100c7a2605bdf574386ecbdbc010. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZES82543727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0652621a618feb6b0848304ff12e57843b4b72a026c7d3b77381ce47d297325c. 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/QZK6L2568513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76261835e77669df296c6c8e3af2131cbe27dace887642965bf00dce77375fd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:42Z), 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/QZNWV2577901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ed5e185974892aad6f655afae03282104b522179f415d6d31fd4fe0d9a7f60. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZNWV2577903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb453bd082e54e68c852c5b908ea7ece0e56e3b903a5d1925f6e343ab767c52f4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWV2577904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dae9cd1eba1a7687447a6d3423190e43ab1e7cf0d668df1d09768a2586f0540. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNWV2577906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c263894d1033a27be096568c3804960e1d6af2ba27cbcbaa90d24f4aa3e813. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWV2577907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb438bf94d1c81f4678aef24e56da18e4620c39081ca0fbc22aa30a79ddd57573. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWV2577915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a50bdb58451b588f58f7e5b07e35d3f3cbbf7090b2bbbf848cfb42dc4972cf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB22593810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c645ca3f7b995365550044f6e91cbc7994acdabaeb5ad26a504ae3afc1a84a8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTBD2509001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542a2efb1283df8be3c78936b731647f9598f70ddcc9eaeb62bb64a5aca33d75. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFX2592550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8498b3e7ebf822c6896e5dbfc68f3a213df2be2e67d8c8ebddd5306c6dd6c8f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:35:02Z), 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/QZZ7U2597124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b7adc786a8dddbdc56fa5cdc588b60a3a43d24bf7758cd7e7b765ba921effd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:06:39Z), 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/QT3F72536976.
Concert Intros, Vol. 1 (Concert Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c67cdfa1bffbfe183b17ee8c95a5600b911e30e17867decbc720dd14f62a21. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:07Z), 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/QT3F82501189.