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 0x247820bee492dd25a80b7b92f3635b727f100178932026587179c0236afa73e8. 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/ee9eddbb-4134-4983-81f2-c035be6d9f86.json and https://artists.proofprofile.net/proofs/artist/ee9eddbb-4134-4983-81f2-c035be6d9f86.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 0x885f93bc8fc74532d2616e2ece04ecc0d004f8b33c789aa59ad1963ab5b868e3. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BXP9D2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce165eab58be561ef9953fa1f66f5ce07484e769f3f430f05f2a40703e62a88. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZGLM2352169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a43b5f8db47c87aa0b464e305cbddcd8a8c26c7b86b4e326c54315a210bfff. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZMZ92328908.
Sequência Neurótica dos Crias do Lixão (Ao Vivo)
Sequência Neurótica dos Crias do Lixão - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524be6ff5c250ccc175f1e008c5b4c928bd714eaba3e29bf7b0350d563145592. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNJW2334135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14695ac776ebf7cfcc506d23a62c95b8064092a2bbe3be000c5964e9806c5ed. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/BX4KA2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81ae161d8affa55381827743bfeaa0c19ca06fb7079555ad5fdb1ca73d65fc3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZW9L2401689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab428acd40365d4b7194b5b6c5a1115ff16f1e5a03b04c303e128ddeac634f8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ESA112576617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50166150074c39060b755ef78cb25f1b9daeaf3c6c92c9f66ce0981dbdba9f88. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BCE7P2302852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d429170ab3af19ab791edb16df23aaa8aefd13512f29c849d891efb9d0c78a. 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/QZGLM2321944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55049f77428ce186d04f2a2f401f85beb1822aa1818ec058bb7299bf689eb91. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZW9L2484923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27afa9bb55d75f09c0af2d7d07d4684b1d6f62dfb2950eba058128ee64dfa689. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BXYR22400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a704ad5411565b2edc50a78b5d00e41e567d28aee55cb4ff34ea51076ab66a3. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BXYR22400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172201a802a6a494452751b7a2c98a5da0ebc13cac6763b5ca85c45cd11d3fec. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BXYR22400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f828a39de71bb862a96aaac78012694ffb3dc7fc6639156db5ca6f3f308004. 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/QZW9L2217867.