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 0x9c79b6ab60cb061d07278172169bed7cab354555bb65535332be2f9ae16e0b59. 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/60431acb-af97-4295-8479-feb5bb1fce83.json and https://artists.proofprofile.net/proofs/artist/60431acb-af97-4295-8479-feb5bb1fce83.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lost Contact / Forgiven (feat. Peta Oneir)
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 0x841b7e8e8f82133227b7f0a03c980858c83c1a4bde627545131fe7e47f3b0ac2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBBHF1310093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc73ecccd599a65e0ea5e0fb534254e161201771b6dee3c63f8a880d6dbd1cc5. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/GBBHF1310079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5efe452a90a04816dc3380b4a90c8055d98e22537f55352455df2cbb8edd4d. 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/GBPWR1600562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0d1fe29a87ef3bf8510ea27caf781acd2eca569ca95ca7241d12b84cc040f9. 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/GBBHF1310316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323805ed01568d8f2d830ed705e66bc8462046cd272c3363a2f502e1a99eb49d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKGHE1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf55e94bf84c9213841978b3c697fd7580969b5ff2b4e805fc7f93af9eae2532. 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/UKGHE1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2725add76e0b2375f34ae3129643741d3b39d946b1758c55ec0bbe77a60e8f8. 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/UKGHE1700004.
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 0x25bc7c0be01bd4d79ccf0319148e14f1aaf8c590a395e0d23507a26fcc3c62f8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKGHE1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d12035a23dcc1fbbfd4e7c931348f515a23128431e054b34e3779fe29bba215. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKGHE1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedfd94dd7a7f99e58e1f2064f30c6684a51d7f0b8f36c45590f1aee1f21f30a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UKGHE1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01a7a5bd432f72d2520eee73dddd3c68a1c38ea5a55246483e6b16c978bf1ee. 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/UKGHE1900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57b7679da2d36a46cf7eb9314471854c3e409d46ac1ff18e59c0a8f4ae5ba95. 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/GBBHF0930399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8e24d4df37a2661593c02af0f00e0317284ee75dcff056b275130a1694efff. 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/GBBHF1310342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50228f383f796cf00a23aad178bbd418405762469c53c5a36f72fa0e132f91cc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBHF1310348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d373f344565430ee2945e4fc4651d7849b653d172f7748ef871effdbc37804c. 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/GBBHF1310344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9600e2896c9b1fed2024cd7c97da7a8d1fdd9d69f53910b4736273a7d2a289. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBBHF0930400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77d65a9517435dd967eebdee8f8946d6d2c438b7499cbec54771e5ea8c4ed82. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBBHF1310606.