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 0x345a814b52ac36f6930ee5305824bb2fdbbdbab6ef3dbbfca3dad04a0369bdf5. 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/daf52025-1ffa-4a05-b82d-bb5d1e348754.json and https://artists.proofprofile.net/proofs/artist/daf52025-1ffa-4a05-b82d-bb5d1e348754.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 0xf07ddc78daaa649aa76cd854f7d80a0bdba5ba287f486da2d4889638e281e73b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BRSME9400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8efdf1f9e6b01f911fe94b6e3c48c855c45ad88edb814996312af7f59eaf80. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BRK7E2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31448273cad81bcfe89b9d895b5468e8006bdb02a020c25259a8154262bd895. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRC832200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690d2633b13b3c0aaa33157da4e56346d6579c422bcbd00b639d17e70665697f. 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/BRC832300296.
Toni Platão & The Soft Parade Band: O Amor Segundo Hebert Vianna Em Dose Dupla, Vol. 1 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26de8434c00a53397c3128548f79d702941b32f6b5711ac7c6a20829c00a5143. 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/QZMZ92419525.
O Amor Segundo Herbert Vianna - Em Dose Dupla, Vol. II
O Amor Segundo Herbert Vianna (Em Dose Dupla), Vol. III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9c3cdc340e49d5d36388dd444ca282b85699aba662aa3abce4aa04ee1d5fdb. 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/BRC832300245.
Faroeste Caboclo - Ao Vivo No Rio De Janeiro / 2005
Multishow Ao Vivo Renato Russo Uma Celebração (Ao Vivo No Rio De Janeiro / 2005 / Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89694e61fd965c2bded6f7bb5d713d3f16a2f83fddc88566952fb93d9af96e7b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/BRUM71805094.