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 0xecddbc48d3ce77f987efb7dfdf8173b1818759434e063cd16b5c9f248991c908. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2953ec72-f91c-45d5-b873-40b32306d1c2.json and https://artists.proofprofile.net/proofs/artist/2953ec72-f91c-45d5-b873-40b32306d1c2.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 0x77448859ef66ab09316eb6e45eae33eb74d83eea7e5bd1b2f81317ff13c29da8. 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/QZWFJ2311349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aa422efa6bf6d756fa5adbd929dfdcf7f60a1fc034d8a4efbb5d338e77a4fa. 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/QZTBC2333759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf919b9386f054254d720d97b6f6e33c813f036d98905c58a55e744e49a5b595f. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZTBC2333760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f80470be1986baf7520fb4d9684f66de926771f34fb7f9355ad041a11ddf30. 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/QZTBC2333761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c7c428e1f3c66a008d64ff4621cd4d0c1c2ec81cb5ada2e48e7d626f81b3e3. 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/QZTBC2333766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97613e3be21e763cb257aebaab5a7efb9c1e897c4bf00809d826f33b2a1df8fc. 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/QZNWY2304743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa985616c545c872e250305158c34c423af26baa375e7a45c20ede90b0695ead5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWY2304754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d1e7febc829c28f90f60e55daa768f4fa42e6e99cf124cd391dd4077c31a13. 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/QZMEP2213949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6d9563a7e88a51aafc7bede99fe592fc710a80c8e5849955a1b2b6e178e662. 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/QZMEP2213955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a7bc0b667aaa0226c7247b01f0d799a17bbb8f24199d058da11c5786b2ab0d. 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/QZS642391075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4104920fb3ef34c3aa779e32f6a1b968019975fe39336894140fb3ab019e6f0e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZTBC2333762.
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 0xe6bea9cb9e99b56f3ff044529b646a0f69e4943bde7d814bb72611e94ed70414. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZTBC2333763.
NOTHING IS REAL NOT EVEN THE (intermission)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646eb6342148cbbe705c06a23083d7dbf6a3d78e28b5819a54ef295b70b4a0dd. 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/QZTBC2333764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d71613a19c3ea9104ea415846eda4ed1e35a4d184f4c18701f150adbbf44fb8. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZTBC2333765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435747c46413d0e4a98ffce477208233b247e637a048c2380e3dc78ab30306bb. 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/QZTBC2333767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c02d8722a5372f06a21ecb73c5c16e9cea78fc134b42928b63e70401c6df32. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZTBC2333768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d7a918020772fc40ee277442ff58d13c893045b0ecde6d4fc87b6327ee0e81. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTBC2333769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64458761aed2c2c9e3cefd85044f992eb7b707cc25df213c5d98fa60375fb046. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZNWY2304757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f918cf362f73dc79784b41474dcbafdc4df40eb5db4ee2b65b72a7acee32326. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZMEP2213964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5e9bccc42e312f224743bc4330e61ab2ce6fcfd87cc1169fc8f6435a3e7b61. 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/QZNWU2421240.