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 0x36d70baefd292b3612379c58e1e70bd35089da7f9160a45d5615520680db52f6. 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/67b4b7f1-38a0-4121-989c-8e04973fbb54.json and https://artists.proofprofile.net/proofs/artist/67b4b7f1-38a0-4121-989c-8e04973fbb54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ao Vivo em São Paulo (A Mistura do Bombaiano)
A Mistura do Bombaiano (Ao Vivo em Manaus)
Arrocha em Ritmo de Brega (A Mistura do Bombaiano)
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 0xea843e8043e03a53f2b6bd6f42f1ddfd50bcac2b735197d9bf9fea983eaa21f0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRC4M1902936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ea58d42e80603b16f94c50a40c75af8b3e73a3e6c0431e00332576b3f4b934. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BRC4M1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6b6d128105ff44bafadf9553fc6750965df260ffc318d68b3ff87ab2776802. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/BRC4M1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fa48000f99e6ab13748ac5d06a8cf29fcf89bef4c17d48404aafc6b49fd005. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BRC4M1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d712ec60802cc547c4022541446d60b10443529ed6ec5d860a854f719a571b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRC4M1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984f4352909aecc7e4c686b04f59ace570da8b8a0359551bc75d7f40e4a46707. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BRC4M1901206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eea2547f01de42500fd153f18e6309a278e972a3b5c39f21e3e0700495f27b6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRC4M1900383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb17f861e8fc25465e162c046d7a88795a2f2a6b85361c040f5ba449b5596ee. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/BRC4M1900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41228f2b82bc2ae7df50862e834966052f3166cda0deaf22ac17abb033454497. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:03Z), 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/BRCDV2200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70273f488b84f95b949bdbfb2a1924613cbb05445a911912a5cf4d7e290f3d6f. 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/BRCDV2200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237de1a93df18aad514406f943164035f6861d56741a71030515d7f9af32e1b5. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/BRCDV2200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84c494f214072daaf1b19229d5a305513ad45417aec9f7df2017e7efaba21af. 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/BRCDV2200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18febf699694d272d34a6005608fac0b158bc85178cf506917ba04e9487669ba. 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/BRCDV2200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3c6f5dadc050ffb8dfc92dc55ac674999a0d6936070ba07be6c1e01362dfef. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BRCDV2200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b5987d345da0cc60e266fd44d8b94a3041ab5564cf4b89831e614f8cd94397. 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/BRCDV2200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390198d58ca24777863300d77146beaeb9e3eb40ffb0da27b1da1537eab48e26. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZGLM2512913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa414ea570bb0a39873d3657d6dd9a37603a33ea10efdc2bf9441ec8472606afb. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNJZ2505183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50776b55e05c64ad83fbcc352b136d04e0c4fba6fcf67bb5e79a01134240799. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZNJZ2505172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbbe985f716740ea3d70fe9836c9ea912e2cca914dcf458b2c0df737bf66ca7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNJZ2505176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1068a48e1c2f7d4857e27fd9cea4e49e13165436370219a9b553897ff9e64143. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNJZ2505177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6efcbb70e34bf13c36dd7c43471942dbf1814bd95baa5277c2855c7a379a85. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJZ2505174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cd1829f32187b195094dfdc7627ea678598d847e55f0394bcd574b7600d630. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJZ2505182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4697d0a5adc0e1a2c04f44663322e9af9810a8b5deb607a1a21bf862a87e464. 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/QZTPX2592528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0534313ded7678f014fe504430aa3ff544825fd2094efaf3fbd5b8ad8783442. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTPX2592529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeb98166ae2d6d5cc244ab5d6d11cfdafcd717a678e75fd4773092c5cdfa375. 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/QZTPX2592530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391959bc4c8600e74e4780c076bc4b3035c30d9aff6d5064acaa4df961e69e5d. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:00:03Z), 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/QZTPX2592531.