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 0xeb0ac3eafd5d5bc81055872102d2a958df93d4e9168239c196f850bbf6f9a577. 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/fbf019f7-e3b3-4aa6-bd46-910143173af3.json and https://artists.proofprofile.net/proofs/artist/fbf019f7-e3b3-4aa6-bd46-910143173af3.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 0xc78960a91f24f3583555e8f75920b4b83da08f15289dc92c83171c7e2435f07c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BR65D1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a44e192c38e1892aa6aa88c686c475bf2d7b190ccec913b8d3bf2999a70ddb7. 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/BR65D1800002.
Grandioso És Tu (feat. Amanda Rodrigues)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78960a91f24f3583555e8f75920b4b83da08f15289dc92c83171c7e2435f07c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BR65D1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21712eff7c6649e995bda5a12de38c15783b8cca5ac2e67ffd36f76ef052ba01. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BR65D1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeabd5acf37c07428a24a65f1ddf010f0ea31c46c8d2e7a19906978f036a32192. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BR65D1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21712eff7c6649e995bda5a12de38c15783b8cca5ac2e67ffd36f76ef052ba01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR65D1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a78cc381fc03ef7bfeee9f714bc2a0c3b2e02b8984ec47b795a1a38eec1b80. 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/BR65D1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b5aac1e47c605af52be8e041bc1b29e7189fe2b53d240496480633c236af8f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BR65D1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a44e192c38e1892aa6aa88c686c475bf2d7b190ccec913b8d3bf2999a70ddb7. 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/BR65D1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78960a91f24f3583555e8f75920b4b83da08f15289dc92c83171c7e2435f07c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BR65D1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a3e7ead51b6e71c2778dfa7667d2cf081087cd595135d323ecf779afc4a846. 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/BR65D1900001.
Ele Continua Sendo Bom - Sony Music Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679f5cab76b86b4b3a99bb02322275e33f77a7cf2ceb90865933024779b6d1a5. 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/BRSME2002758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe80d9a125303a25358efcdef9d14ca52e0a3e3ea5b262259706c16cbc9a5c3. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:00:22Z), 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/BR65D2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc115e298f1a3564a04ce3d6643cf1962010d7308a91e7a99c9d4a74c638d5353. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BR65D2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3a3a1669b592335ee8b90b3db4deb516b11e8690fd1f5af928a8d0e4bf9767. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR65D1900002.