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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2c8309268861d9229f504ea013a5fc7dae57b53759fb579573193b7786bb87. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/155fecbc-177f-4982-a369-717b7faa2984.json and https://artists.proofprofile.net/proofs/artist/155fecbc-177f-4982-a369-717b7faa2984.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0305fbe186b98d73c963e0af767d32b8375244c3d1ea9a9bf97f161f157ee8b. 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/QM4TX1716596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd569a75136d9559f7405a70ec39987fb23762ad9d79829c8cd22ae3e393b6e84. 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/QM4TX1716597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeb3aef5069427b55e1ec2c8d7612538f669e4f3a9853006caeb60501db8e9c. 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/QM4TX1716598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64bd0a9376c36a38390b73462c30e01ce98ebc12be5f6c98e1a51f092541cb2f. 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/QM4TX1716601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb892dac890c18719624a9e62055a5793db7a0608078f2f8c89186231254be43d. 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/QM4TX1716603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde640acef5cdeb840ea5b8768407cd15eabd022060af698ce454390816ac6709. 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/USUYG1116473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ae6c21a34b09d391ae327d905f06b2c59331be394190d48cbd0c2ee7c56196. 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/USUYG1026965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01253bb9f8b133620271f810cd01ca3b7b5640bfa8d390875be70566152e4103. 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/USUYG1026967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c783696b58f7833f68e7ccd794af0437befc83bfc92160cf44abffc3147ce7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUYG1026968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3519c28908b5f5750ac893a016b1295fa28d3d1c2032971cd26a0c9172506309. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:57:28Z), 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/USUYG1026969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f87ca9b1f239fb4cd1f0ffbbed381bd4e93ceb609ceb4319e45844a7caa1bd. 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/USUYG1026970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d71a2384d4b41dd65881381a2b4b8c877cd92b23d8f5649506ab790b455ba6. 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/USUYG1026973.
Strung. (Sene. No Strings Attached Rmx).
The Rum Diaries. (Jack on the Rocks Remix).
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdbd6bd59ea41c148d5c77b80b60fc329614f5c6e55eca3eb6b730985b968c4. 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/USUYG1105895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e2a13dcad7141f1f365184e29407672b02e66867f91ea612325c3b98ae8228. 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/GBQGW1400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7a72d992671c51842c28983decd01b0a010e9f768524dc7ae634339e6fa184. 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/USUYG1033679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad1e9c66dd169c178c322406c402579959af54e1048f2e1e807e102d1657709. 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/USUYG1029980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f916da3d8183ddfc99de5f7c9b93847f2e6e8314068c4028e6fa1509a393fc. 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/UK3YX1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46671fb799a16ff63b96481de97a036a2217403d94dee1b570a980817f6f6fa. 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/FRU701300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75ae681fd9249ce203e465a48812c960d6ad032c127acbc48e141c7e1869c6e. 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/FRU701300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c341b6e8c9c99f14d21a276a5f494bf1b0fad15cb9d3df5f79bda9ff201654. 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/GBJET1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a50ef2e4f8717841bfd68985a5f47c5ea7c9590d4ebf5a16ea65367b9e6280. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:00:30Z), 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/GBJET1500027.