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 0xd7735a414b1e8564da0df35fcea7f5088bd69467ba37901d2049b798b2b7ecf1. 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/e230eed9-2ca3-4bb9-b28c-b5b59b9bb31a.json and https://artists.proofprofile.net/proofs/artist/e230eed9-2ca3-4bb9-b28c-b5b59b9bb31a.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 0xd427eef6bba1e377b6309179e9fac495a42cad72c3a38ee39022aed6758cc583. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/SGB502232845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9aaf6ba60561cd59f055639ffa1c7564b63ee6b35d177706508d5e63eb9bba. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/SGB502335591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947e83103f58c51a479c9e5e35c2034cb75a1ba2112ad3b089678bbc21e23905. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SGB502348987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df9c0095b69f849b4d70c891db0fcd8c702bf597e202f12eac0eeede9465402. 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/SGB502345637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb544d474be9db33fdcf168c8e5b0e73ab53074652804d7290e3deec56740d853. 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/SGB502373629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2827e16e281bd31ebc7be0ae9302f518c68d988f2fff7fe638b1450361f3133a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/SGW502343443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc546cb0a1674846b057d200ee000d6f44e25b7a2ecdfb0f84204c801b7312a31. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/GXBAV2369353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e45f45a8b959cacabc7316c9d8acea9944656cfe5a70168a23780d0b2ab4e7e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/GXBAV2390501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93b54e70f4ac9655624fa3f169811025532fabf583cc21ed0c5a155528aaf12. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/GXBAV2418143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e2ce3d7b794ee5053c307d133500e2801f9cabd86db61470e1d30e0efd16be. 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/GXBAV2443065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cb67ff81b8c47d14864787b8ff4f41c817ff43ccc90be89e76b1d855c6927f. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/SGB502464299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65adc0d0bae9a4af2b056731efc2004d93ac88979fe0e123a072f7561c30db4f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/SGW502434792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfaa70ebb7a6936bcf2c86d1d146088fc934554c11b4ec922b89129d7f7437a. 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/GXD7G2446483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1da2400ee1dccc50459723e72d361f92126bcd826a58a103183d9bae2f355a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/SGW502434951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4af9ef6237677f545251a4cc3bbb5bfb0537551490f5ffa32c3d2a0724e3e61. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXD7V2289763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04997f77edd68173fc723f3fd995128588ad1477d13aff380b1d1a694a5cd4ce. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXD7V2238296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61a15a82948f172ec62a8fb15fe694c08d9f188ee2681b7f29b794cadf1481a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXD7V2249623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058e0b5739514a8ac8c0ac23fc43708f280c754e0eed3c501303560d9c7bcda0. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GXD7V2212536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab5938b06b24a7b82a92c8d484e874ba209a436fd7029896ffd63784f19ef12. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/AEA3A2442988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbab0717cb443c997e9eeb7da157fc0914166adaed810dbcd12bdee70c7412e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GXBAV2507772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98abd6f8b88eec9a970d005f290997ab54fb4fe75a7c23ec9a2044cc7d1a1ecf. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/GXBAV2581397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4967e95ef810c719e6404a157869aab596a81a58a9253f3418c170484151121. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GXBAV2150219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd096cf0248357feff2052ba87c0e4fc5bffb58e4dac2799f2f883e40bd2b140a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXBAV2138143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b7164adb7ce05ba630f406c487483aeb007fd86806da302ad3925eccb765e1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GXBAV2177218.
Gótico, Maniático, Hipnótico, Sádico - Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cbff386c08abfdadda2dd63d7cb83e10aa1be9ce486e81c6d5116512a723f9. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT5M32548699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9446c26a7fac3057562030686c77f07b1fd2391bb5495e21d5474b405df8a55. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QT5M32504304.