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 0xfb18cd6f0708db4d17d57fc7e58d444f10cc9f59b897671c3aca0cb8b8522799. 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/bdf4b16d-47c5-457b-9b91-349954c70d7f.json and https://artists.proofprofile.net/proofs/artist/bdf4b16d-47c5-457b-9b91-349954c70d7f.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 0xb1f85e59a1a2e670c5e00cab453c560c9f61c117eac20b39568ee1b836c3d762. 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/BREMI0600668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eb288e9acc0cbb5a4e39792fd5241adff6e0aca7493c420af606e11586eab8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BREMI7000723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8633f314cb3eb17c428eca84bffcff21f6655f02fa7a332745186f02b230b992. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:32Z), 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/BREMI9500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5da254c533c12d8e1dac4dff7668531fcd0b11440e211cd44ae71e6fcfdb08. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:08:50Z), 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/BRUM71900618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76043bb5c41ea3dca99c5eccabbd30624eb45f2ee3168dcc73de784b69b3522. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:27:56Z), 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/BRUM71900619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ebc5c3d6653122dbdb7236c2e5711c379957a69c6e6c6c19db707a515a20a4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:59Z), 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/BRUM71900620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96656bc5d9613b32c433819654b290ede602e2b34c5e36d21fb9a637f9a6be4. 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/BREMI9500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c421d4759bc8a383c3172ba81b0ad727af8034e1a142ba2ee5a41085d87ad4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRUM71900621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bd838fe2c50d8aae71867e53defdf76a39e83853cec641c13d23b81dbb9cd4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BRUM71900622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8134d0e0ab4967a7292e5fa3a8ac9c704569d72b62009bdb7f5385694ad1a899. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:44:43Z), 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/BRUM71900623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c63bb09cb7d06cdbea01c90420c4ed405d6626fd0bcd7612a71f7b6829f455. 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/BRUM71900624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e2df6914caeef8a63dece755f376590defdb207710eed37d5d8cdc6f065b5. 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/BRUM71900625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cb013353149c4d0bece0fc81ca0c5138abe17a65b5e86b8d25641699d68bb0. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:25:25Z), 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/BRMVP0501822.
Senhor do Tempo - As Canções Raras de Caetano Veloso
Grandes Sucessos na Voz de Claudya (Edição 30 Anos Movieplay)
Madame Bomfumé / Desabafo (Deixa Eu Dizer) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4b5649e4de01f91ed19a0959acc06374abea12f4fa8c6213ad67fbda284ea5. 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/BRUM71401519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec65ea4bd48be74479b8178559533449931bfb41f81715f55e1b1ec237e48c. 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/BREMI0900327.
Global Underground: Afterhours 9 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbabbebf0c53f187c9c1451799578f91badafd0c9097312b6755e77a19a3610a. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBHFW2200029.
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