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 0x1afad078bace0f702bcaecf98dbc0d99f992acb5b1def1ba4b6af3ebdec4d1d2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a776b35-8d13-4fc9-979a-1197638366ea.json and https://artists.proofprofile.net/proofs/artist/7a776b35-8d13-4fc9-979a-1197638366ea.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Na Linha do Mar / Beija-Me / Leviana / É Preciso Muito Amor
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 0xc82f02dd77de4786ac4d44cb2feb6b5e2d7e2519b40200651b8db642abd79a6e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRFIN0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f4e92d73dfc5ac52479bd04ae4eb864993a7d554b35d0f0b9ecd6a97f17138. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRFIN0400005.
A Rita / Samba do Grande Amor / Homenagem ao Malandro / Feijoada Completa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36887ae997351d144d03fbbe8192939a7e926b9a37a119058d2c9b8303b1c3dd. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BRFIN0400011.
Esperanças Perdidas / A Voz Morro / A Alegria Continua
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a3c83343f25762a92a271f1ad2372a25122587f0377e5305e3d5b737abb3c3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRFIN0400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc12b670a5dfa2991dace80fcad6ca9ea960c9c8d3dc407e3515f8c91e1132ec. 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/BRBG61100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd251c02d4a895b46948bda3b294ad309aec33d4ba8fc2eaf659372f3ee1678bf. 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/BRBG61100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdab156e8b8526d836034c9d39c30c824652ced3cdbda9afdd88254fde3a7d2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRBG61100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a295902c956825108633e77c7d5fdb95e52e0ebc8e5d4b4c4f6601b898b125. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRBG61100052.
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 0x5fe1578705a6e7bd9434d01a5bb024213f3a457373ca90a7571bb39c07f1c395. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRBG61100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89a771b5da0eb370a2485892124f7c018ea14bdad365d3321a91f4ed7b413fa. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BRBG61100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b538194bc1742f354bc08504f8cdc4aaee675c6efb253625f2905e3b98f29a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRBG61100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3311ff47f0e999aed0a2d76dfea28100c9f98399ff6abaddc50e2c6c3aae19. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRBG61100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bfe82f23f7fe0b7713d7d6d5d225818ebaec1eb78066598f76d59e241fdc71. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BRBG61100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85299fdd514f489f352175515fe1aec8e1573565d2015e8f71b70ff128d0291. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BRBG61100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8295b39ad18a7e6b18fea7c270c8c4f8b6d123878d2ac9a308ec62e19a352f7c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BR5DA1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a181a4664d98955d79282708f27c1d560a50c73ebb6f015b4225e0dc9a88759. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BR5DA1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbb9e42ebbe808c18dd2e7bbfdee3be6640f65f58a6a735a5d14daf4c3a0221. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BR5DA1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca1afb6b544342758243090cb9678c9991196fee50820eb3b91b3baaf58da83. 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/BR5DA1300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1692655518c81e67c3be61d831c6a44211ea0e55893c7b5da8cb9532377c8bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BX30X1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceb966344a191702f006c38c37a4ec2164e5b95d5031fbcacf759400fdb0444. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BX30X1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e25376a138a0a074bf4df58e1ed617e767620c0c84bd5af9f413883aeb90e8a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BX30X1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f34e3485924766e129f4dfbff02b00927f7ad760770b32f2dc792fbbc1cf24b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BX30X1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9875e5e3106e8fac593e447dd7a2cdb98a5c2c8a83514eed3c662e3f96b6581d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BX30X1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6291358407ce5e0840acef69d8ec456effb05b51f926c0d812eea53eb9faeeb1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX30X2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22fbbdc328f7d086b943cbe87d9681c1a955f722da615190e76050fd8350bd1. 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/BREMI0900341.