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 0x117f1b9b2deb4380928ee787a8bc64e3744648389f1e3a0d960cc6f3581a2808. 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/d300e54c-2881-4c5d-8a9e-2f3b12753828.json and https://artists.proofprofile.net/proofs/artist/d300e54c-2881-4c5d-8a9e-2f3b12753828.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 0x4b67dcecfffa8ae73d59b35563e9a5f81cf402f708240a194588186709054b0b. 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/QMFMG1507035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39d5222f18620ef2c53192d4c569de8f6da2b10353b18c28748d5a6564d865. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF411900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac77884bf2c8ca7f9ad8fa90ac2e2428ebce96dcebb434aa122cfa54ee525bac. 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/ARF412300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7d8d575bd32f9871e7f9546ced02a0d1a003b9e29eea8ff8b7dc84cc88e5b. 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/ARF412400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed00fb3df51803eaef6dd33eb625bd66e31a49ff1b9cc135e60879bbde990d42. 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/ARF412000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5996618b8a319476b490b17dac7ec8568c9eecf196fc720be52d7170cefcc9b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF410700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641729ab264cd51ad970a860f0fe9b2c2ea85cd9588c8f71b41fce45802dd209. 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/ARF412000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641729ab264cd51ad970a860f0fe9b2c2ea85cd9588c8f71b41fce45802dd209. 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/ARF412000037.
Café Brazil: A Guide Through the New Sounds of Bossa Nova
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5996618b8a319476b490b17dac7ec8568c9eecf196fc720be52d7170cefcc9b2. 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/ARF410700012.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39d5222f18620ef2c53192d4c569de8f6da2b10353b18c28748d5a6564d865. 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/ARF411900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5996618b8a319476b490b17dac7ec8568c9eecf196fc720be52d7170cefcc9b2. 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/ARF410700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5996618b8a319476b490b17dac7ec8568c9eecf196fc720be52d7170cefcc9b2. 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/ARF410700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1036db6bf87125219ff07178227906572b79d9918f6af2c8dd87445826f87c3. 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/ARF411900334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39d5222f18620ef2c53192d4c569de8f6da2b10353b18c28748d5a6564d865. 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/ARF411900173.
Chill N' Brazil - The Best Of Electro-Bossa And Chill Out Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39d5222f18620ef2c53192d4c569de8f6da2b10353b18c28748d5a6564d865. 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/ARF411900173.