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 0xcbf54a5048ef26c66e280a67b79324c947abec0cdfae6bef4af6344e81ce9581. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fe91ba8-ed11-4c63-b90a-035b7c1ef572.json and https://artists.proofprofile.net/proofs/artist/7fe91ba8-ed11-4c63-b90a-035b7c1ef572.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 0x6d8dd2f373fc1b720f227e012e10999c43265fd6dabb52c2f6234f74fda54391. 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/NL5HJ2300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaad3a4e45638210e37b953c04c4cdf390a64527d6b6625e9010421ab306d4d4. 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/NLG662000661.
Hey Bolle (feat. Rockywhereyoubeen & Vlado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a771890b465942729dd9fb161d9e328c3dce07f4bd6844bc77713a31ddea80. 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/NL5HJ2200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648f73da06770d85aa39acc537434708b1eda8084475ac9e590bb9a0bb6b090c. 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/QM4TX2285647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb160e476e64d5b8ff089449f1ea05aaaf4e1848cc0b068e946fe90912f7abe1. 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/DGA0P2350347.
Big Poppa (feat. Sam J'taime & Bartofso)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1533651c3cd3b845d91f561c4faf15c675b387af5aa41169b53d5e2c329ffbbb. 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/US39N2307596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb88035a3416ff1febb73740b2a80479ae8831b1a1d2e5ac61ab57f65df0914a. 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/NL5HJ2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e35a0a4d342b8adf850cdecd2d50dd2902b7f34b0db6f37cc7e4e0c4b2b7aac. 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/NLFX52000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96de83a26508f588dd39a839c4e3d7e4d7430f90b9fea048dd75c86522d5cb1. 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/TCADY1889140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1f19d27f0bbedb937593039a0b6d0ab3dd2685a0e99d339093722c5117ab8b. 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/NLV6L1900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a1ba67019e4574e24820bde510fd36520b06695ec572a3424c575c15582186. 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/NLFX52000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1277dc3494eaf7b1c07e0b602edd6e344aa32fa6ef7c4c92c3aa209b5230de1b. 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/TCAGZ2344729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c4fab571c55fd9d5140fb47a7f404c91e917018002281cd37c192d78313ba7. 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/NL5HJ2400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ddeb7ca044b9f3d9dfcb2ca38df2fbaaab9bb8aa855c5e0ea3c182726f53c9. 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/NL5HJ2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92872d3afedc48df22ae745f893218745ae982affa75bedba91b87776637963c. 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/TCAHK2363575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3e0687ecc23ae934326771ff88d6296eeb2b4f59ffe2c36492ed7920c1c7eb. 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/NL5HJ2200372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85e09967a6e4342fb9cf9f4e8fff59c039e3e4cb680d4da70bef7ad79a4a33a. 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/NL5HJ2200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684f7f86f125807b6c484fc56424f8002529b8ab36a2c5761c78b77882eb2526. 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/NLFX51800011.