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 0x5f3baf7206b1ffa5bea72a3639809354c008c2ec05b9c59c3e4cb9562964a1e9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99f448b3-1aa8-4b81-ad8e-1e7c31569560.json and https://artists.proofprofile.net/proofs/artist/99f448b3-1aa8-4b81-ad8e-1e7c31569560.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 0x13c5469d1e845a48be04b7dc0d7f90619445a5b1f571cebf24e85f29c15000ff. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNJX2227466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8960616e0a820ee08dfe5e052954990dc8e903c0992d6619fae6a9904727c9d2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTPX2448375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16781f0a20309b6408205a36d111c08d17d20f1ecaeb9c2ee420ef4caea6733. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:08:41Z), 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/QZTPX2448377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f1edb91203df55561c12b85b1aadcd664d89728cd6eda34f76cb1d36ab31b0. 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/QZTPX2448378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5353d56c99bb3d4b494c27f700e51cfa0278c44333c033134113b48b9daa17ba. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZTPX2448381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd5c0c0c45cd2aed2fe4f292d303203b03c68c4cf2008d7e6d5d5b658ad89ae. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTPX2448382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc524dd46f2b7291dcb05deeabf3b8c65475d3cb755afd16fd36abaa9922d4dc9. 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/QZTPX2448383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8666bda1f9c6cab37fab3670eefeeb43f13ef0c11ca675ce34bfa99884bcd461. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZTPX2448385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf4b231dd1bdf5f223303c3b791af0d259b86606f30f6eda7b667adbd0ad8d3. 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/QZNJY2510227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae169dfc632d6c6ddeae74ca70aa9ccf400392224d9e93d72545edf1e87e760. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNJY2510232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613433d25747874eb0bbbe7a42c5e6be642c985e3679b6b3e8c94d5cf1e7a04d. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZNJY2510233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4583407920c4a9dcd5e5af788100d6862f171d883f0871912d82ef8a22b1e818. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZNJY2510236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d51483e3b5837b161f0f8a5e4cdbb29eb9cde1eb61148dd6a55332148c2b80. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:25:56Z), 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/QZNJZ2571538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7729f54b45fa06c4132ac4364bfb528b1ed311876ae0354bbff6fd694bc1c91. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:59Z), 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/QZNJZ2571545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc454527a3225ebc2d6ea28a79ad1fa36cb0bbdbc35a3f00904369cd2eae04e46. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:05Z), 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/QZNJZ2571546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8ed4ac1340cb34734ece59ae650391430f6acd2579793e03890b96fb8be61. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZSYP2432548.
AFTER THE WAR (feat. Tyson Sybateli , Thato Saul, Halo Yagami, Teerage, Black Myth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33b55efb68c75d55e3f7637766816305eb9d77ceebef269e0a0d1fc641588da. 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/ZA56E2201323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadc04789c7a8019503190caf7089236b0ab6577231208abe585ad61f434b96a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZALFJ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f8ed4ac1340cb34734ece59ae650391430f6acd2579793e03890b96fb8be61. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZSYP2432548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f9b9e9207c340d8203731077dd5a47b18ed5d4b9b3f23d4ab002a2fa74cce7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZS7J2437733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1008e1da300d79bcc0ee0a34ca97d8c75e982262dd44b78740f52cd5eafabdd2. 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/QZS7J2497914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a558646f4301bb39002103f184e03458ec8d69cdb8c57fc3dd33660c25974a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZAC032410717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a7f902339f9a8db81c8cda95513ded081b6eb0a756fd0209b42ab4cbc23791. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ZAUUY2200002.
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