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 0x81aed18e8dd6c65b866325599388367c1f71262b6f3d15e83152da1eec5ebbda. 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/0defb380-8290-443e-ab2b-66b4f96ce7c6.json and https://artists.proofprofile.net/proofs/artist/0defb380-8290-443e-ab2b-66b4f96ce7c6.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 0x8fe78d866a09bb184f2beff077c225f1fd7600263ec9d84e9539f8dbe895f0ef. 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/AUBEC1704792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14470b70a7978461c0a3a7a94b919cb82e5e2677dde2b9b604d88de9bd506a68. 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/DEVF11700271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28aca16993290c5bf7d1edf257212431f6eb9c5f2106940efe9cdbde93fded55. 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/DEVF11700273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f5c2cb93dfb3e1dede504948fcfa2069a7ce921c2670a567874c928109e890. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUMEV1909417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804231e39854a20f85612b0dae779c5553be266d8e28e2abadb7c0379fa9bfb1. 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/FRPES2200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230641949849cca2e062e0a5b2f781006b9ae3d739628e175ec33fde32ecdf51. 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/FRPES2200450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ba934561aa0c579a66c03fa91a20a0e2e313d71402863448bbd0017f78b8f. 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/FRPES2101440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804231e39854a20f85612b0dae779c5553be266d8e28e2abadb7c0379fa9bfb1. 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/FRPES2200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3b0b36397a8a3377516a93b24b79bb9f0fa6077d6ab6d4248abeeb3d94e9e2. 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/FRPES2200500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf405ec3ee9a2c007cc7574a946650094b7930b0938350d2fcea8d849f60cda. 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/FRPES2200510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdfa4943d1fe01c3836ba035354daca5e6c831853cc63c7d387d19061c6db4f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRPES2200490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb258adc2e729e1354d059db9fd3f410438a2836f910332cfd02307e47dcde734. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/FRPES2300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd956362b20e20163f1a47a3b955ea0214bb8cd9589bd25a3be5a02d41aa88c3. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FRPES2301360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebaf98db14e72371bd20df7c45a6c5ee9fbc7b99bc885f8902f498ed4a21c3a. 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/FRPES2301390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57328768c917b30921736744220eb73dc8ead498c65f176833c85b8e0260e1b2. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/FRPES2301420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e044fc1dfc94b93ea1af6c0faf526930cafdb724cc9480fd726eb848b27c0c. 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/AUFF02500128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6938ebc09a84057b3c3813f71be284aba7a569bf5f4e6b8d1767f3d44c3a1b. 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/GBEXH2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804f17bcc3a3744775ac27897bc62b534f0e562d21a4fafd50b15fbcc195d2c1. 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/QZNWX2363792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb334664d583dfbb311d6b6b5aeb5a47083c909c811207aff29fe1a39bdb1c6f3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZNWX2363799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f97819ca988de004048421cf4b735ae1f098c89d5f397aa57504267877b9b87. 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/FRD9M2400260.
Café Kitsuné Mixed by Young Franco (Night)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a362bfc125cd68d2c999896211f1948b126d0f7bd6d484155d864b857dd8646. 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/FRU701900384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14470b70a7978461c0a3a7a94b919cb82e5e2677dde2b9b604d88de9bd506a68. 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/DEVF11700271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3adcb655f1399c161daead9b3691f01ae5d675e8aa8dec18555e632fa033a1. 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/AUBEC2104550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd050a4535951bbc72334e9aca957570c64f5716e4dc19004366613cf47367315. 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/QM6N21910782.