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 0x5144461343204425bee552be39331e00b5de008f42870f8a8daf43ee0d7cc2f1. 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/2fbd3cda-b928-41f7-bea5-aadab7fc1651.json and https://artists.proofprofile.net/proofs/artist/2fbd3cda-b928-41f7-bea5-aadab7fc1651.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 0xa6a6b4785f4c03e97cec178bdadfed9cf9bd1f7dacfe81e9f23b06b6260fbf3e. 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/DEYT72300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8b6351340bcb719f6d299163757b67ea7acef9c83f2fa8a482ccd54dd31158. 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/DEYT72300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ea6f0e26be37ac3900eb0cf888016fb6a58e2886edf6d6f73e1eb3dda0e941. 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/DEYT72300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad37e1cc15a27f85541f3c61a6018a3a3e0f1638250c6c748a0c2bf52d0418a. 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/DEYT72200421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1228e425d8dd188c180a4c4b87aa07e79a315d9300b64a789864edb0b9e9189. 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/DEYT72200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80144137ac58ad951014d8ef11efe088fabe1d2545cd2b2feabd9bdea8f1bacd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEYT72200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95579192425909617c64ac5e8c23870937a49a55b064ec01d85f71e9429dce1d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEYT72200336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25efd4b3a6ea8e5957b8dfcb821dc62ea53dd251970a4ca43c5af52de2edd211. 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/DEYT72200297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531c9d4b5193458fa16624168a55f52066308db6718659343eda1ece74511583. 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/DEYT72200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73de2ac143349b595c14516007ccac078530439eb8b4fca8c85c71ad88849651. 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/DEYT72200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd247b374a533b355163511038a1c94b6d8afa64ba7ed1613ca65c51f5f8f66d1. 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/DEYT72200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4ef47aa8df9bc56c2a0c5874961ee015a1a7f4addde69e61d5b70b7ffc0b3b. 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/DEYT72200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf135648472b624c15b46e35cbc60c7fac3d473cc5630b5a162b83117a72de3e3. 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/DEYT72100676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c585d189be739a3eb6fdb87df9caa29959d9b8a5e62ac72bd10092889f4125. 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/DEYT72100600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713beb90cac1cacb7a79640aa0ea3040f8e33ace9f12b1a038e1bca126a61244. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEYT72100555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9357f63d9d9772e0a0d53fc581099137b0675af5dd4b07dd27a01f1e9b159cc9. 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/DEYT72100508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41e4ba151f56b97530be7d55ec754f839d168d315ba27768db6272cd4393d64. 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/DEYT72100466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702a41abbf4810b402402ab982e6c876d1d8530b8a146b05aca38d23610a43a1. 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/DEYT72100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27da4064509f0d8729e37035f38de50447ff7137a998739a31f89764dd371943. 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/DEYT72100367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9260a044a1ed20677c19bd62fd75ab03035330aef40312e7c097d095416e94. 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/CACWV2532311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72beea3ce5c5c59f68e1854126cac96c4753433d9cbfdf252b27bf9d39e3b96. 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/CAHQJ2571087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2206e4acd55ccec0b1a8880d69308ed5a63c700b289a876b0d779be456fd13. 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/CAHQJ2513641.