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 0x1ce26a7d5e1f78bf691ac9ad13c568ea6c71ad0affda7819dffad18ef98e47a0. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa39ff44-75be-45d3-9cb3-4278a11446b8.json and https://artists.proofprofile.net/proofs/artist/fa39ff44-75be-45d3-9cb3-4278a11446b8.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 0x93f04016ca9152df24ad2ec573e762f9bfc67c287892df5f02222eab2e092362. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BX39F2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dde9baf973af8ef8ede039223c808f31cedd0e8e65939df5c5553ef77bceb87. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BX39F2100008.
Os Independentes Cantam Milton, Lô e Beto: No Clube e na Esquina da Música Brasileira (Music From Minas Gerais and Brazil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a047619f26a2cc2e88377eae0a88b3fd87802368d7c9700f57af2f689f30b31. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BCPLF2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bab4cbe6398e0e2e957f1ccd8e32f2dd7303171c74a3bcb25db7c5f219b793. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRO8E0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08141f5d76e34e5dedb74dbcbc29cc295426b0b55bef6fbf52aab284b48c97e2. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BRO8E0700005.
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
Nossas Mãos 2 - Homenagem Ao Clube Da Esquina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6939c2212c432bee62d0afd2e0a5cbfe6d632bd5fa46ae15eb6c23b4757f5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRC7H0500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c55b598e02eefb3bf00096e1a8b2d8989bfa551b02a63ea8eb9b6a10d40362. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BRC7H0500001.
Nem Nada (feat. Samuel Rosa & Chico Amaral)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5342f88ac37cce0045a16e4538b509c8bb9929448096818db8ce8c79afad1b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BREE20300013.
Nossas Mãos - Uma Homenagem a Milton Nascimento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe28f3ff4daf192e62d25fa317be04496b809d032a15f0652fc982670282d54. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:01:55Z), 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/BXNIB1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc100c874e7d3bca096c72f8c662059f929b4cea1b34ca1fbe603c06fea16e8b. 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/BXNIB1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1a7759c1c2f7a3e6e11f0898a25310db2fa50bd8d75f737a09379d8c578af6. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:31:47Z), 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/BXNIB1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8364ba8681df6832369ee3acb349083a046544e45209c0c1d3775f1a470bb5a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:50:45Z), 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/BXNIB1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d2ecdbdcc14f9d5ab7abc942fea3b36e2aacb511fb86f799f40bb7c0fe8c59. 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/BXNIB1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818348dd324c7e17187c78bc316bda685e29909557ab0625415b6a3d23a024c5. 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/BXNIB1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe90560b4a452de83cc2a2f516d60beaebd982d81988b93b2f2768841939216. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXNIB1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a2c67bc2d30b27f5a319032153a30aab77c9722e5db336eaf7e28838136eb3. 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/BXNIB1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f77c787a4d97e688fbea43136dc151eabaab4a6d5f2835cf0cb1dc1f29d74d. 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/BXNIB1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60783d7169313f3702cb152f1a6320422611bef8a7edff81e8453a91cb594626. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BXNIB1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671df38449a08fdb865246a70efa7ecf51d23cec1d4c57a86323bc50cf019e00. 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/BRW7M1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108bb53a2f40a6b6eb778d0744e258642a0cdb25ffbb1747f67cc8fd8b211245. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRW7M1700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f0b27abe61c77dbc479a72bd44ffd0ac71c15093a9398382ff019d299423f5. 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/BRW7M1700015.
Belo Horizonte Que Eu Gosto - Músicas de Pacífico Mascarenhas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ecee237c6a06e27e8573d3a02890a92c137fe627961cede79935342b10b0cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BCT5J2100007.