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 0xd51d0070500c52d26b8b294344a1e43e3d1fa2f60998a2a78c62495a294d5174. 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/77b3cce0-1891-4091-b2fb-2178cb2fd454.json and https://artists.proofprofile.net/proofs/artist/77b3cce0-1891-4091-b2fb-2178cb2fd454.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 0xb995ac35dc4b67ed3c368334491344e4009796f48aeeb679e452dcf8f64a1041. 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/TCACJ1527729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf906dfdabc690c4fafe204b3814b2a029e3ad77df55c9c4e6393af52123781b5. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCACJ1527736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e6b36865cd142e69608fbae465413e7663224060c9777bbb9b377227238ba7. 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/TCACE1586905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dedc9bdf674370ec7d26417b4d0493ca466fd9b778b9cec147e5111b3dc3780. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCACE1586909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3887fb56ce093e4fcf7f22cb7b75771750b0433a32c87da8070403cba6026c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/TCACE1586910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b6f6a5624514454c696feea4ce8624cc6dacf1dd2a10031e1d2d4e6685dff5. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/TCACE1586911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756268f243f7a4671c4f51a6dd526a85b0a2e3756da2e7243dbcec15a40ca758. 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/TCACX1764484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e8e13808b03e2e60e29e7270510035e79ef207abe1926b776fab3910bde09a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARA501800131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ddd13586ea5488aaade6347129f75896fa7a134f098bd413be68517dddf8c3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARA501800133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6402cd68837a3c6053eb4a7749f88d3cf354c1510e1f189d291a81e45dad6933. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/ARA501800135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba603e51f42bd321412404388a7b774197d2be777648b9aa946aa1d58ba1895. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QMBZ92036942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd4ae98da314eedb9bdee76840caad44e0aa2cc9b0b7a1f102fa49bb4a7a2de. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QMFME2078561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96871028af5d16d741deea829d014bc19d8d2b364cf9ca31643770008ecdbdcd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QM4TW2189744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1ae658956226b82c7d502fb5502ad4fe9570034ffdcf80f50f24f94b94de24. 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/QMFMF2106552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba603e51f42bd321412404388a7b774197d2be777648b9aa946aa1d58ba1895. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMBZ92036942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07914291acde99797ce306856d991371ea71e029b0dc64135b2aedd5cc533653. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QMFMF2106591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed1f848760084700980523abfb5dd1615d96fca8fb442b94b16499c41e553f9. 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/QMBZ92181120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dc9bf2d417d59ab2808e508d90fffe05db12781109047bafbe036ec12af3cf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFMF2106561.
Fluir (Nacho Varela & Cruz Vittor Remix)
Fluir - Nacho Varela & Cruz Vittor Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa34b373637356cf10866e8f39c2500aee7aae659dfc3e936f85980b0d189059. 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/GBJX32264722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344a1c91568166e26fa63a0f0ed28cbb0cfcdbc704cd32772aafb76b317b3e2d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QM4TW2338610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45157ee020b3f1a12fbc3126048cbdbf9f4de2847b417c0123757d6a48b8d125. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/AR6B52400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ee8d5fb0151664bb14eaaac3409334883b860b3512411899a70137e38641f0. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/AR6B52400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89989d6eb144f7186b3a37844b3567744bc2afcd1596f246d9f3d9bda14c2e2a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/AR6B52400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a32326583c675a9a03dcb104160b60309b20321ea1aebc38c98d118ca9f2ed2. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/AR6B52400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ee8d5fb0151664bb14eaaac3409334883b860b3512411899a70137e38641f0. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/AR6B52400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120a3a7d003ccd3b6ecb10e7d23061ad30a76c9648ded5f7d5b7f273e1136e3a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/AR6B52400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a380bfc69c7a29d9bd6521b27c7ac18c323e7f09137b26c30445fc057e7842. 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/AR6B52400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e55af582a63afedc813d7dda9d31907cffd2252510d1c13c4a0624b04aee6a. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/AR6B52500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e64ff3162e7500606a624d218e14feb09cf2f3214528b8a543ab0ed44f03f54. 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/AR6B52500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad96da3b44071433c0dcafbe8d05b0e5abfe8efcc1c8e94645d41a8f62f85a3c. 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/AR6B52500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf747924f540a4c083d14232f88ccfbe53de2b313eb899d289419ad95137bb2. 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/US83Z2430656.