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 0xef37d9c8664a2ffdcf17885a2d1ddd695cf40cebb16030662f72fb1e4f2b03af. 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/bae6a76c-13f4-43c8-8023-91e882889202.json and https://artists.proofprofile.net/proofs/artist/bae6a76c-13f4-43c8-8023-91e882889202.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 0xee82018f1366c2eb239f8a8515c5ccf1da43c72b2113fcf683cca08cce0ad5f3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QT2VB2512398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1075b9da527c62c98c52fc8dc4fba1ef69bd91ce40c40ebd20f947521414616. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QT2VB2512400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed4faeffeadff7652f5fdd858cbda14ba8a01610f38ebe7371276a4523f175a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QT2VB2512401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377947049a2db41a8d60a8bdea806d7ae29f5cdef78a021cca4fb90cd6300259. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QT2VB2512404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74620a3a95ee087db90789671848da27520dcb98afe4b1358ee1b2af3de2488e. 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/QT2VB2512405.
A Tribute to Loyiso's Father - Original Saxed Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7e09a53a9d9f7cefa2162577ab9f2a36a5d939b362673c6952d5671f4997d2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:09:30Z), 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/QT2VB2512406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214502eb624ef124a1d8cbb6bc1d91e3b9299eea43536066a68f18d0bd7e6e7e. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/QT2VB2512407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe651e32d9d6b6ce1de4c4d0996495d8fc1d8c8882cf34e0720cb5f62680d7ac0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZZEB2450316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67d58f5cc6ba024a8fc049244b243ab66f7fdc39ac91dfda86c246e24b9522e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZZEB2450322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6420e36bc82b4878d984f8770b33d76c1c3cc882b979c86f959eac7db311808. 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/QZZEB2450351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d05f6a7df0b7be539a19aaed2a86b8dfe8b4b88f2abb7857de439a1bbb1bd7a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:57:26Z), 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/QZVEM2521422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4b03e2fecca440a2e0cff1266df1138601882fb08be7f86c4f5b2cefc0cef6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:53:29Z), 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/QZVEM2521424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f1f230b76b5eda52f865a3f4df25e3ba944e840919a2f43edb9098abbf0893. 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/QZVEM2521432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74518b96b1757715043221dbb8b4f7db5aed4fff8f10e3bfa420c81e5b7891f4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:34Z), 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/QZVEM2521444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b2f836bdea281eed2d86e7ca277765917db37395a5b5d1954f6f462b3ce652. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZZ8B2501845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2d6646bf0b31631f31c2eecd0fabdd3dd0fde2b82e5e4beda37d4d7751fce4. 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/FR6V81985763.