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 0xdfa1e593b21de8ae8db9ce11097f84679e485393c1353b944a5bfaf7ae29e62f. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abe2add5-c33c-471d-a7d6-bda0edc31e94.json and https://artists.proofprofile.net/proofs/artist/abe2add5-c33c-471d-a7d6-bda0edc31e94.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 0x1bbeda80e61e3f8d321eb7e00fe2e26082d67baae8c3206d3bdeca0e94a13c90. 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/QZW9M2373486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690ea9a047c68e7dd8ab39c00c40b2d8526ee56944b3ceab7512870f8c0cef4b. 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/QZW9K2246089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd678f75978eda472ba3dbaf2eed3c06541fc46af1ad06d989295d629763b2a8. 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/QZGLM2201878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1014a6ab4a065a78385c3b398ba80bdd42f7d1471c2411d6a30689b9110851bf. 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/QZW9M2373487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd875ac7b1687cc874123cb8447c5c4c92637ed11d7cc7b7533dddf7c885092. 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/QZNJZ2173393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8f89bb07694798df52d6440dbc074d887106df7616d26f5508a637a851e7a1. 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/QZNJZ2355477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ba061c8fdd1ee541eb3c4b785f846364df156777104e4459ef8110968d11e3. 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/QZW9M2373488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7924029b515b825fa9aa086d0aeceb3178b84bc042aea40be540eaa5c30a4b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9M2373490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383bf9c6a713a391987ef3c607abe8d9b599244006726d89d03ac5c8391b0e00. 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/QZNJW2162904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8522df451e3123092bdccbacb5d82f9368be0d1e4442b3451f7273261811574. 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/QZNJW2162908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cb2b002f7ad58e9d972e1a4e8ce6ad09d011961200a06f836f41fa9f349783. 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/QZNJY2230678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffde275d53867278640f8df2f156102f1ba75710b0fb571ea0703f657ff66f0f. 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/QZW9L2380502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690ea9a047c68e7dd8ab39c00c40b2d8526ee56944b3ceab7512870f8c0cef4b. 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/QZW9K2246089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2bac4ade441b1249416b7be96c5ad1e6fdc18d17d286a426eba4483ef40b17. 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/QZGLS2229223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d4d35a426c47915f621ed2500fb61530e049ed1113b968516531058af58bfe. 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/QZPJ32116530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd708a839a3cfe7b978702f66bea5fbc39eeed55f4b576ff51e4d831f5bcad8eb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNJX2037139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f33869e69bb0acd56f23a7b05adb6843667c64e96ad5c169954fc56dff97d5b. 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/QZGWW2117046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc448185340cdb743ca8d24ef6a5d33f89020cd3a8f6fca9ae24f52d6ef060990. 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/QZGLS2002675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada143018e587a4a99548b584556118aff315673dfae4dff1ce6658eb582b6c2. 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/QZHZ62044188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327ba6dcc0d26688ff5667e25179cc49a20dd1af2f0d70e62f057de222219a8b. 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/QZHZ62044190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f885cb7c781a4808e3cb2989c44f79fe57f3d468fde7b17868c806f5b2b194. 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/QZGLS2219640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b96ed009422fd16a91e3fa9c843cc0bac0c6925b43759f3fd2a06bdf56a4d93. 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/QZHZ42184060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4f7f9a4f51ca8866a639e80fa8cdbe8e0b451c323ca9a69ee133090bd0a5a3. 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/QZGLS2171905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504caab5a3c840965a65498c60d631b1477e4a0607499e484cea1d585cc11039. 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/QZHZ52081969.