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 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 0x22645cd7214c190655e834c7282e15fc342223593c24b1c5f4fe2995abbfe7e8. 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/267bb0a8-be86-495f-929c-e83e0f147e55.json and https://artists.proofprofile.net/proofs/artist/267bb0a8-be86-495f-929c-e83e0f147e55.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 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 0xab6d9d1ca2fa6919eea9a37a4bb1984a62a58b60716bdf6eb191dae31b30eabd. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:54:32Z), 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/ES5021901813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e3c2d92989b3a53c6e18cc89a50ec056865de5708c10fad0be0331c7af893f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:45:21Z), 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/ES5022001027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1fa192eb26f4c690afabed0f306f9050b5668fc6b1f48a2b9fb31aa2f1c2d4. 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/ES5022100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d663ca54a8a7a872f796dda2cd1f1a502b2bd82780add592fad354e421a4e20. 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/ES5028000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f669f97df1bd787eb01ad3d942d53aa63f9c5a67de7efb5b8b4ca4a58f4edb5. 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/ES5028700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9520ce87c2b99d5d0e4d5a91f384408da7c092886bde9ea7ab70872735b982. 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/ES5028700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d83b416e0d309e2f25173a57eca6f290443f215f51b573eb3f148ef553676eb. 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/ES5110103310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5129e138af4305a3237505edfb0d09f61e2810ab33aede723a2fbe4315a66e9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5021800748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77150a1adf06eb16ae72c419b7db33e54f6f85aaeb75175f2d33f4d308433a26. 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/ES5021800749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334e447de11b3f166d62a1525e7f4694928c1326ec4441f0bf27d85a877c537f. 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/ES5021800751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d663ca54a8a7a872f796dda2cd1f1a502b2bd82780add592fad354e421a4e20. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5028000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8aa95d250a263a5df32df48b94a4781e002748f58223e02986eb0cd692d210. 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/ES5021800754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adce29b0860cfeafa1d9bc07ea96b80adba196e3bb0bff5dbfe0a5327a8de82. 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/ES5021800755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bef5134901ac5482f0a7ee707b6eef9f16d066358fbeffb7dd26bafc692f39. 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/ES5700804113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fd21ce62c04097a7d2b6a8bebfd10795a9ec900c4a1c341a868234cc7ce871. 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/ES5700804125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa034958b22c3dcc7c4ee24d4918cd258226ac111f7e1d6431e61fff5bb3efd4b. 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/ES5700804126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9694c3fa122b2a454f4874d3c8b18d8fe940e70e151bcba5438806c957baa476. 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/ES5027700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab276b479c521dda527859a3decca2eaa23f6f9f5812daece5709c004ae999d5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5027700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b696f7957db2b8da0c70e79b49c5d5406d32d84a6fd825b7ce4e9c93ee88d0. 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/ES5027700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37097a249df2d8d2d6b06f9a3851613aa3ebc1f4eb5e5f9dac615eb47d62059e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ES5028500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898cf284334dfa45e1a0781ef430fefdef8db5c7bb5a2d18852a4f0a23c85d7a. 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/ES5028600091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a11b6b019f6025b7fb351d0a64d2a018f95dd8a90a835eddbd7e121e8e283d. 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/ES5028600092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d919e225ed8adbfcec058a3340e2ba0064e05d766a20dfb5af6d80ed98eb873. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES5028700021.
Sinánimus Molestandi (Remasterizado 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb720ead73137e9e746330375f854854779b87406f75be7391851d604e39ba31. 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/ES5022201074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62fbcd6a41be0563ddaa5c87c1cbaac660ecfc04d7c723d148d3b0360f2c332. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:32:06Z), 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/ES5022201079.
¿Quesquesé se merdé? (Remasterizado 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe440cde0aff665f2796e28a90658661edbb7552a113b149deba254bed7f92e. 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/ES5022200883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f5eb65a7ce161ea6170a112542839fdab32ebcf46e90af4b5345dcfde5bae8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:02:21Z), 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/ES5022200887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe505420b5a4cb5188b2d5c991f3b372e7066980e890061dba4285af35744cc9d. 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/ES5060703801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5cb58aafab4c052e0355e73e8ab0f45687cae26354e285506ec890bdf6a7db. 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/ES5060703802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522b2563a54cfb10695171015279528ecfcd03162380d62eeaa5c06e48800ad4. 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/ES5060703803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381011921defcc5687839662e4302cc5a25196a474b13f9d9806736baac91d3e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5060703804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4683b1c930582c76f37ecab0e7b7e7d964a64bdfaf23a074e22375bb89b743ee. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES5302070661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b6c6c6234f8ce5b42a77c42fc3429606253d45c5b7d8c54a118a82b630aba1. 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/ES5302070673.