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 0x6e8d1b19043d0665abcfc34cb195ebf7d3deaaa07357bf9a6e8e17a3e4e06c80. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab2666c7-9fc1-4281-9149-62c70a28d968.json and https://artists.proofprofile.net/proofs/artist/ab2666c7-9fc1-4281-9149-62c70a28d968.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 0x81964870437e3741d0fa143cf525c8cb7fd0e491ca4b1e52d6d7dedab414a522. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDQH2153697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3169ffd71abe7d3297d8d5ae057f9b6049b2f85da1633c1da7fe340afeb2c89. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDQH2153698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575aef45be752a8f6848af4b4779663c297de351a6d4415fc7784692cb6cc3a3. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:59:12Z), 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/QZDQH2256567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2389b902596364c2e45fddac579460823cd99e0dffac7c5086a1246a73e0f8eb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZDQH2260900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b645e0b359a2c9e2351afb72737b9bba0c68d62cedd62eef8d455d70ee1896c. 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/QZDQH2358398.
El Del Cochito a La Vuelta y Vuelta (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b5ed5523119199e8a8fae321de3d0dfa55b1bd08df29db0d3e2c76cace811e. 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/QZDQH2367485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2cc6160e359f5324610c72c30879973cd2e6a59cd6c299e14fbb2fef975b43. 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/QZDQH2368132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ba9337c06f11a80de04f295ed4dc2aba0c7f11c983faf335b5d2ddd12bd9f1. 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/QZDQH2368134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69825974a39c6950b1f3fc7f9ac0821b59b9d16af718d0774ba6395d25a53183. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:54Z), 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/QZDQH2388649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff681248aad1e06141b85e1c74c3c66817296f0d52b18a959de9f3cfa5adb154. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/US3DF2428237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7b4c85d75f01e9781ab67fb39ce35a9d49eb47b6c301912b1896b9b917ada5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BK4DA2511649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e14d13f1f58a0de630f51e80c20db6233a95111a932944333783b74142ed1a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M52554460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa118c92c12c9e85eea5a84440f0b9893be95aeb32a5b97e9e5ced96a94ad06d. 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/QT5M52539104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cece28b6195cb840dcc2363f955e7dde3e0a6b91c1220cde2fc14d97e652b9f. 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/QZDQH2363351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc6e0068f7ca71f768c365890e3370cd0e45a30c825a7b02833aa2a971d70d6. 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/US3DF2489089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90272405c6ec349590799c6e18ed34f56d89aa3c5acd8f791115c06397db9577. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZDQH2375919.
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 0xdad585a4efbebe52cc49cba73dd82f084a7dfec06f3534a0617d2686d9f70ac6. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/US3DF2489093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae65f69be87d2b3bfa4f7f2de55fc438ac33eafab950ae79cb888f335a1c83f8. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZYWS2300007.