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 0x0fbce20b443806d84500de7613b7544b926c4deb63b02f184fb8559d80572de3. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6777ac44-5303-4632-abe8-33d6fe98f0e9.json and https://artists.proofprofile.net/proofs/artist/6777ac44-5303-4632-abe8-33d6fe98f0e9.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 0xc28b7ddcb6ea9fdc6139fd3637cbd38c78e49fe942d785567a358b6f008f32c8. 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/FRX762421992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa81e17ea3d102db92fa417b187d162897e96389a00a57da5eaeaf0966c4163. 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/FR9W12318288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d205389b8a58768b1a52cc4cb3441a75a3aa41934cb9f0ee31038bb4aabbf1. 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/FR8LZ2210130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b121e89a95d2537146e1d88adc4aaa81396057723c2eeb3b19e5a665959ba02. 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/FR9W12133525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1574a59f20c2fd3289e80729cbaa7e25e6e41943f3ba3f34514d874595f1d5dc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR8LZ2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b121e89a95d2537146e1d88adc4aaa81396057723c2eeb3b19e5a665959ba02. 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/FR9W12133525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880fabda91f15436bd2fac7f7adae350f421bbb8939d09ac802df771ee959431. 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/FR9W12139799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64315f2e9ede39edcd6fa1a2e8b00cb4adc4219274eacf8be297d72a1399b200. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12212679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc238429120f50c3a35d785662d207240ad716f63323102c7be00e8fb7ee837d8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12212684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0602d9eddfd9ae7bb176c2c7691bc10e96aeb161c89434493f4c986369c5e85. 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/FR9W12119578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880fabda91f15436bd2fac7f7adae350f421bbb8939d09ac802df771ee959431. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12139799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0cb3586828d94e7bd26c25dbe717dd56793f3bb5d0951726c02d65758c79ec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12108563.
La goffa Lolita (feat. Chico & The Gypsies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29398c0c2ed50d25e8bf45c8d4fbc06fbe0f83cdf0c7138667875ebf19d81a79. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ042300707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474d1c3c069c734381a67d04f679341cdfc796aa8958848788890a63f973f973. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ042300744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f9beb5f0ebdfbcde5a411d06bb9679ff156e033a7fcacf7fbf55f548fb1a20. 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/FRZ042300749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b87efdffd8caf4945f481547f67478c72038ad99d7a62a34bf6c3fa72c036a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRZ042300745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64401d178e4644ae91db79871ad2318eece12faf2babb7851b84f2a180a55a7e. 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/FRZ042300746.
Le quartier maître (feat. Patrick Sébastien)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58ccfc2d353a54ab1b7db9eb224e51d9e1fb57d7093a3dfcaabbcd4db0adaf4. 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/FRZ042300747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1774d0863f251b2902a5fce72248e3a124ab61926f9e5b00242f833b4b550430. 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/FRZ042300748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537c1da2a06f0d67538ace76acb34f7b68f5c694d7bc6e8acbaef2d1ee8c1828. 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/FRZ042300752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e0a17104e4301512688b40c4c26316e0487316ee1bef0756bbec4d906bca03. 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/FRZ042300751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2456d330f8b56cc180a18a060aebca2ad2b6eda04b64aef87c4724aea20645. 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/FRZ042300754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25144da796fb91c6a3731aa6076227453ba3d496337f5624be25b80c8a9dda8. 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/FRZ042300741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33563a2f13fb7ee865dc088ac555e0b09d45a6ca7a63c4a8fb2ec31d8c53b60f. 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/FRZ042300750.