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 0xd7a41554380f2ec1362aa6261c8f9da4132a84d19781b562a3c462f0e7c1864c. 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/05fe384b-ee0a-4568-9484-9a77e6b28658.json and https://artists.proofprofile.net/proofs/artist/05fe384b-ee0a-4568-9484-9a77e6b28658.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 0x6c437c833c37918068367e63d9cfcbf86756dba46206c9477e8c2283f3060bd5. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ESA112428001.
Por Conta da Fofoca (feat. MT da Coronel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8995ce680ca5864ec0c8eeeb1af13ce1ee8ec0ecdbb2873a61e48f8b373bfae1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ESA112428009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bbafb175e913ec995bf6dde85c3d92762bd0b47d81560bece43dda62945b67. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ESA112428420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b4c0dfab27b8fcafed88efdaccdc379bed1ced8fa36590e2c9d61fa42740cb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ESA112428422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a464dea50e5e03b41f57f6bc860cef87ddb19bf57b2595c8135d9d9603dfaf. 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/ESA112428423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915bb5236cf0c0f0a859bd1bcc513000904b9ffa2f1221bfef6bf1d420f4c8c2. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ESA112428425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2478c751801d7f8d4054032f02b6275d603e980283b34cef7a9d2d58b7b6a654. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ESA112324480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4088534beb504a60111ada358588a20f5a75bf5beba7d6027b81c37ea7a745ee. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/ESA112324482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ba74b1a61a98a9017fdf7b203dc2e28a453da467896e1aa12f3aa71fcdb6ce. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ESA112324483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f5d53f98c7dabcedf0caa6edd097b21a50558b972f61e087525a28e51508f9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ESA112427979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e47188dc3969be6828de73f594e38aa4e12590c4209fab7f448ae0dbddf1910. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ESA112427980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5e8355742674a9ef7e371c170b60bcb93b367055d8bbcad45a8eb67e65b6e2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:44:58Z), 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/ESA112427982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4842e292a98da78f133c7ccff50c43aee1aa158d3606a405404cc1cde0445bf2. 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/ESA112427983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d16f9afcbe8c26ca4b18fed9c539b40d02b3ff29e1f2850a1659b74b10dfba. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ESA112427984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c1f1bb6d5bcdfcd596a5cb6f6407c3d65b28370c34394d422aff9ccc46ea1b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ESA112443070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fe17b147d78e6a53193491d4949667803664ae2050e8624523c5b25e605cdb. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/ESA112446495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90528d15d471b03d4d2244d3c62f08fcc2abe63380a8803b0d2e922235b4f576. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-27T13:26:02Z), 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/ESA112446496.