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 0x0332ed4d16c32d9a6c01abad18fc6745e2fb268aeb02fffe80a26dd89894cfb0. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8112647-31ff-4b5e-8b64-d8edd2b6fac0.json and https://artists.proofprofile.net/proofs/artist/f8112647-31ff-4b5e-8b64-d8edd2b6fac0.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 0x7e1e5ffb9a76ff2415b68bdf5eef4eda77b55cb71a5acf7d2c16a748a6b3abe0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BR17V1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39ff470f340060c6cea57f7f540329581bf9b84162b508e330adc8d23f742f2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BR17V1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c54b7ef2a1542b0de2e3292aca666c945b4878c2cc0b2338b4e72bb31e49827. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BR17V1500008.
Pra Onde Irei (Ao Vivo em Lavras) - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6164e5fedbf8341f89db6c52f9d392f201750b31222ecaeb1bd34c9af70c4701. 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/BR17V1800003.
Pra Te Encontrar (Ao Vivo em Ponta Porã) - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04ca60568dac52e92d27d308bd46b3519e489c5476dcdc631d074c2be8df81d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BR17V1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30221cb38d2dee5d379904665d95c2f6195d593829e6848524345e1b9dd3d962. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BR17V1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6ebe0f7185abd03397f843a60499fe22ebf7f14db07548230c55f08daae03d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/BR17V2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a15747033baba556f93f16914b4f4ccafc8f5663214fa7f494a2982cb4c5a9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BR17V2100004.