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 0xb0bcbf49934362ef6ff2a4263c2ee8ec727ca9597c58017b9d5a2b02cbf40f24. 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/e99db117-22a8-4a04-94ff-d652d7387920.json and https://artists.proofprofile.net/proofs/artist/e99db117-22a8-4a04-94ff-d652d7387920.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 0x237421e86313dbf3a74255a46ba0297f5b1f1d8c8417051c98ef904c68b69018. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/UYB282270006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c857ee08891aeda8fe1d8b156f8524325fdabe1b4829279ba74080410a965d0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UYB282270002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84adb2ac0906c9f455a0ab6a2ea1a27bb3a410edbddffdd7e4ad9e350dc0807b. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:00:54Z), 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/UYB282270000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c53194985cc4b8c140f53ec0beb3bca2c654f170250d6d00d7623bb8845cd6b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UYB282370001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472ef28ecda7d97bd54adba7474af87d7a3c80fb290e1d0bdd006f77c1513106. 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/UYB282370003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cceab1a00e433d0d1c4c5c8f0b48f1954913a2bbb929c0a2db064b22c37121. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UYB282310222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a090ebb7a4aff3c350f2c73db42bcd54d4ebd00a41ca84068444a3417f76a5e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UYB282470001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89afdb6649b959fd8df3896b9a57122d7beadfeb81444a4b1d443400bc2e640. 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/UYB282434074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955ec7c35d508ca97634384ac6690ea961c13c315dc0162b2decc95f1e2d1baa. 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/UYB282456023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc937c2f61eea9898a0878dc5f12e87d1ff49fbcf69fcca907fd9b46de8e89ec9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/ES64E2301497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb76e3e611085d917707a753d964c54ced4234674e6d278bc760eb24b52129c. 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/UYB282482035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f525c2aea1c8c9a2cfa5fd91674bf527e914465c21f9a35788e9161f568ae4e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UYB282482036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7b0559dd49b44e8ee270ec3f4fac6527fa903155489386e2cd685d9c2639cd. 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/UYB282482037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c52dd9bccf25bc39a21f72a7c9e36a0429cafd2078fb0f944feafca8310392. 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/UYB282382116.
SWEET PAIN - Round 2 (STUART VS SWEET PAIN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480cb59f572d0230a7571ae9d242f95c2b978189240cf0b0113abed63ad28949. 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/UYB282382118.
SWEET PAIN - Round 3 (STUART VS SWEET PAIN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d49e644dee30bf57d4732738def91a62b5af12276fd0561034ce96566d2c93. 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/UYB282382119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7820aa6f924ccebb5ef63d5f73160e0c30ed0e7c33c29bcd4da4f0028783a98. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:38:50Z), 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/UYB282382036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c86c5b4bf64ef487bb1ecd07c9e79e59c28e938d466e9b26cbb4a92eec8d5f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UYB282382114.
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 0x15aa660ec581c69532604d462893d70dbafd3b20eb110a558a2b894977ec03a0. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/UYB282382115.
SWEET PAIN - Round 1 (STUART VS SWEET PAIN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fcff6eeae8e27ec0bbfbd5b16e3b804058b0018c334782e2bd9b190f0c2456. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UYB282382117.