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 0x5ce746bcb756ef4a9338e5950629285504e39caf893150361914261c6f5ffc1d. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70394258-c9f6-4a57-96aa-880411a50472.json and https://artists.proofprofile.net/proofs/artist/70394258-c9f6-4a57-96aa-880411a50472.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 0x13aa3d288fa9e102066bfaa84b62706064e5d59e24457b7258c2cf9b6b0d82eb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHN32028288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f000ca698498ba099e8d4f83759f083f753df6c844d630228a2b21420c33a1. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZHN32028289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69cedf0a7001f6cab5857207b448ba48919c602a5417c99e883ae85dce63b50. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN32028290.
Trapero de que (feat Freddyboss, Slimpoet, Maikysantana,Menolblack y Lito G )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5af805ee4be4db942d6820b5e50f85470868028ecd1a7365a19f0d84de0016. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHN72142974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a968ae8bb4354178a9ed181cb162098d83e0f831fac6d30aae176aa5cf966f. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/QZNWU2162915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb392c54350451bf3ec58d7ddb7428ed7b3156cecf738b0444c48d0c655321e32. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZFZ22275865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86714db551d706c4c6769fb70fbf7620a0b091e1a5a0198b7e84eee054cf94b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFZ22275866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5340b12546c1a673c380d7471c8b8490ac51d6b230826d33c042597d6c039f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZFZ22275867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928eeec601dc956fa6817096554cf0bcb202eae0aa357ae79cd34121ba925fbd. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZFZ22275868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eeffe4714ee33f77ff662845faeb1c010243129e253849a5e28205f80592b13. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ22275869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8447402f97b7174f2c4b33ed95cf246040cc30d40fed1b1c12415c97ea3ef03b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZK6M2316285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4398d10be1f3d3d3d0933e9d196cff637b17353181e711f416144648733cab. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZK6M2316286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f70e0aa26a9e8223a751380e5b254affa1ac2c34258499f7ea7b6da480027e3. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZZ7K2496799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580b4e72fdf335c21c849379aa812cf19e3002cc24057e665a24077d6ea41aa7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7Q2472877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed99da53173fa2e28932673ea0b8a3fae10c7fb6412bf8921296c50d470007bc. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/QZDA62530349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3df3ae2d6c65d198df14a7817548036e06294cd94ebf01d9edff5cb804d235f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES62556110.