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 0x41af52588509168dfea29622bc5cc3b2b5265415d76ea23b0ae2bd3c09dc1f84. 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/4636e14d-1801-458b-b0c5-e5208ee3071c.json and https://artists.proofprofile.net/proofs/artist/4636e14d-1801-458b-b0c5-e5208ee3071c.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 0xe5ebeb730d7dbc693c53170819a20588defa8f87b3468679ae1d9879711f28df. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QM24S2201461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f17ab8ede7e6904df88289093272a4ae7e50fba588ef913904906c8dab0973. 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/QM24S2201460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad36c83e430661fd41ba5ca13d7c7636d7edd47119330e1687f9c5732cc920eb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM24S2201456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba1461ddfa6aef5cefea64099cdbdfd29736d928df0b97586b54360bb0e8605. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB5952300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba1461ddfa6aef5cefea64099cdbdfd29736d928df0b97586b54360bb0e8605. 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/GB5952300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1680882e8b2790a785a3feb77f80c8f2a17e5f97b045538e9627ed27c065e7. 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/GB5952300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36f24d776366b271dd6059bc682fa091ec1d4ff2c9a7f44485ed9dd594cb6ec. 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/GB5952300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae0a3ae7a7eae51d4493d5488d268e9508256cdfa702dda135625c0ce84fe6f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GB5952300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554c7487aa7185a404ba5f538a00eb89566f47d7676de8b224b50cf87a1a7c99. 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/GB5952300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba1461ddfa6aef5cefea64099cdbdfd29736d928df0b97586b54360bb0e8605. 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/GB5952300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebda34b0472f23c2b33a9a8af170d8487cd6d99b78efc386ab716e02e3501d0f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GB5952300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ff9bab1f59da331f3ed6d13e6769eb29847d419de5303a29d8d5d9eb1cae2. 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/GB5952300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb210113a56043bcab812baa398ef9d03e6833404ed116761a3719b97217a2e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GB5952300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3147e6b9811001ff2c6a84c243e69337f758db917fad3b0f8a9346efa2e552. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GB5952300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fe64a54a372ac3f300b67736e0f67eb97cd5cc97407d3978d68b05be04cad0. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/GB5952300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7af356a7058385482b036a49449df402044704220c4615d8fd9313d5b3bb7f. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T09:52:31Z), 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/GB5952300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28da047bfd15693a8e9fabdd84f2de0d294d7e679de21b299c563c4e6884950. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GBBPW2400477.