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 0xac1ce8185dcbff4619d0c11ec087013b497a18f45c8f108e2eefcd58c4173e92. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed0dbacc-23da-4464-9eda-881c67333da2.json and https://artists.proofprofile.net/proofs/artist/ed0dbacc-23da-4464-9eda-881c67333da2.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 0x7360d967ff093c442d16c286ea51dfa0706baf8d8e37dbb50d7314c5d333b3d1. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/BXKZ71900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adc896905b9025624cee1f40f0e0970533e3c4e477f041819e8547b677935d4. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BXKZ71900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9df5a52d8a9eb18a2f744681160c08ea91a63decdaefd36e44fc2aba9b6db0. 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/BXKZ71900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc9092cb472abb01bc31af6f09108f0ba5faaa1144cb7302fc44b9c9ef962f3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BC20C2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d056b60f578face52e98f482c9d9288ab5d53714f1cfa3f5c96a3c47c9339. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCEUW2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f464840b4e1c9606b525b8a996b639f9ff3a7e2a8c26696a229f67f5e71ac7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BC20C2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0c4ccce2a857d1c03bdff3463bd3cb4a00360bc5f35504bfc1d3c969fc925a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/BC20C2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4df35bb5875d00549c421b1ce74fc0f4e9678ba8158b5345c8d841eb80f3b7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/BC20C2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291ba94679aec34d1a21b638007ed29d4c8e5cb10c84d6708627464ed1d97257. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/BC20C2400002.
Alexa desliga os meus sentimentos :( (Eu me apaixono em cada esquina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c02ab1d2336a038c2d81dd42d68fcd2a718808b6f7c53935e0d740208e3640. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/BC20C2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4533eb319feec6d0cb0fb50815789ad8dc38bdf93ef26fee6dfa27a157f593f. 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/BC20C2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf528b897f99d2df6609f5d2cd644ff48f12f8e7436d6f42650ab18506a4765b5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/BC20C2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6935c0b4a7034ea3c3efd8a1b948b1d85c758fd872879c88de69a375ee0bfc55. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/BXX1V2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea325336d3cb27480b4f40d0faecc8678264aa95b63bb248a82023238d25f91. 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/BC20C2500001.