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 0x9b259717c963d5988e35a7b72d78e6954febb16c98a1664d7933079c29305761. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea984e96-bef0-4e33-9dbb-ba1a54a2e770.json and https://artists.proofprofile.net/proofs/artist/ea984e96-bef0-4e33-9dbb-ba1a54a2e770.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 0x9b680fd172c725d9b2344f318ea871586077d666009ee5e0b95ca0ebf41ea431. 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/DGA0Q2325055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a3b06be0de53b7e2ca790537b66298ce9ed77bd0dacc59a8409a5853251c6b. 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/DEVY22100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf8c85566912dfb3d369ab5ed49c425467778e702815c44f440bdc42af28a27. 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/DEVY22100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de0b764748292691c40f7a439526faca24ebe9e7ff29a78017f06b67e781e4d. 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/DEVY22100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b07d610ec9dc2cf471d835f8771c7bfbc1d9c32d45a1c0e20c23b8bd58c6f3. 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/DEVY22100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84e10587b77d6248bc51b7341674436e7c5d4d630ff0c7a439149abf654d60b. 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/DEVY22100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f408686bce5aeda920523a5cd27af3895f3b9f8ae0e1bda69d7e8e6725fadc. 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/DEVY22100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc382f56d60c1426ccab505bd89e0831478241f07b4ede180a5eec9285ccee98. 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/DEVY22100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21af6443d0d0a51ea1314ac675e32598542c6ae2d2b07ba0bd2befdcdc35afd9. 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/DEVY22100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa949f125add5e916716a83d51795a98b959060ff78248454c70a468dfb2a269b. 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/DEVY22100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64688f469302aa829f3389aa3e6dbfcec25221e07dcdd2fac678e1db79bd100. 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/DEVY22100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48302460b78474e390664e992926e28f1a46f094420a16a33387af1120461fc4. 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/DEVY22100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc340f45fed8b899adf1c3c513cb176916aedf0c28f08825ed02f11d63e026283. 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/DEVY22100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497758350e6bb15f6c176ae38fe449343d95442d0393bf072d3b51dd26dd792e. 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/DEVY22100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd579ed54331523a53a241fc90045a5648fd5b57ba4f3e5781564937ca31453d0. 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/DEVY22100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b783d2fae3b41cf8795e322d44066e776c7816042f189dacee055b3a11f74e. 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/DEVY22100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0dd62b762ff1c88d1e23bcca01bb142e54b76e3b93cd722fe0213d02f7bbab. 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/DEVY22100026.