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 0xdfb6ad4bab815b9d0e2be268e1d161ea0c62fd021114bf84a8e194c62f3f88ac. 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/c2cace4d-f0a3-40c4-b906-ee8f8dca8253.json and https://artists.proofprofile.net/proofs/artist/c2cace4d-f0a3-40c4-b906-ee8f8dca8253.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 0xf030c1ddc3e30a5d5eb8cacf5166e7b8e52ae22375897a092b91bb0c860e00f7. 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/BRVIY0600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a495f147ee97c42a9e3c2b4de6ccea547c3b65dc1006fa8d1c481c65470f862. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/BRVIY0600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d97b086dc330dd1a1f496ba1fd56d92a2b4cf17e5401033c3908e27bad986e3. 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/BRVIY0600038.
Pai Tu És Santo (feat. Andreia Miassaca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eb5f2995c0c47cd4339037d180edc73a6975e4b3633e23ce869a4fd3bd84b6. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/BRVIY0600040.
Quero Te Engrandecer (feat. Dago Schelin & Greta Lira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ac9d6bcf1ff018010020a80dc42e6beae20257fca0e696c684d2d57587ddf1. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/BRVIY0600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc5beabf908dd6a52145c0d090698df32c00d73fcf724147dcf80aeab84e5a9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRVIY0600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a80775ceb2105de7ae51cf4b408bcb11e7ddac48b28498c9a571bf8ff53a5d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/BRVIY1400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e328506a8c8518ad5fe2fdacf7eca15c90376cf439d4e29eb277a7530c18c0. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/BRVIY1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a873f9541221dc9589609580d7598fdc36b9977c8b6b2e5f2136acdc288143. 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/BRVIY1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568510a787c04d2cae350887409e093fe7f54a98e003471b57921000c6f52fa3. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/BRVIY1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2d6d3ed0dc48e871a6ce02c97fbccccaa864d693630ef3f9d32305c022420c. 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/BRVIY1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16703d947d55ded137227f08b097b55112a4a782f2044b2c4786cbc923c51b1. 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/BRVIY1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8801092378333ed1a6d56829a645dc0007907bca67374cf83e241006205fc0. 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/BRVIY1400010.