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 0x9255fcacc960918f010e64bbe0e0e29af75e9581aa27e9b86aa12f44581937d1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/faa808be-a241-4f15-9350-3b8ee76ad734.json and https://artists.proofprofile.net/proofs/artist/faa808be-a241-4f15-9350-3b8ee76ad734.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 0xec64af8043f1fbac5683f89057b1cb292af16ecc6881319e84bdf34b4eb96c64. 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/QM4TX2327928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe776037a26a8e9462e6252349e9e57f97251017b385493cfd56459853af84219. 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/QM4TW2186906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6c5fa3f680e5465e8104d91a1dbb58f118bdcd7b8a5e5bd2ccc82578bc5588. 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/QZTRX2495710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2cdfb75751737c404862a872c396e7eb0a7fb7b330051b0799f41deeb1c0e9. 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/UKZGC2401678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0643266e084df4b6b8a033822b6949954a725a35fbe9e273f63e415731ee79. 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/UKZGC2402120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31038d48635efe211feae4959b582ce574fa391c075242afc1b564b4444bfe20. 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/QZZ8B2398228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ff77ad3341d0a3f9577ebe45c100fbec13c1ba667b72d5b561d6d31b09915. 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/QMFME2357896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54a48db287117a5cbb26a379e467d8827b4c3e34b1c99efcdda6ce79927220d. 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/QMFME2356959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2f55f9910774de793befe6002422a58f71e514df716372f0a04bb6e84522b8. 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/QMFME2356905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81c6c1df7220fd150516d17cc456a07ef2cb9d7e18ebb24d907c937bd1341b3. 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/QM6N22351783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4092e1ce19de12ac3c09c1340a3647f2c7f3134d1b8497258cc33ad328eb84ee. 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/CAHQJ2351584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbbe7e72a77ac90261b4029ea5247e2f3a75e4855a99a0af2a192b6aa5e3ad1. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:35:47Z), 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/GX8LE2217180.
Midnight At The Mansion - Slowed + Reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c905868209227834f8207a6f779a176d031d82d23afabcadaee2133be57cd2. 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/GX8KD2264379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1ecba68205c46154dc5dcf65e4fe39881196b9997a43e87f32af5b3c8f743a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:45:10Z), 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/GX8KD2255895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde87b40544e167d06418e42e0fefc1793dc95960ad2d340e15715632e403e9a. 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/GX8KD2240823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc53207f97184c66a56612e311347439a5942e6a9dd2d2843ade5689e233656. 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/GX8KD2248638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a249e68940f1b07cbac47508d5624cb88dc7697c6c1dfbab91390330494aa6. 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/BE8LH2200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bccafd8ae2a0a8c395e0858e4c37c29fa119a1c2cdc82ff9e8f5a4051df2320. 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/QM42K1905400.
Restaurant Lounge 2023 Vol. 1 Background Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a249e68940f1b07cbac47508d5624cb88dc7697c6c1dfbab91390330494aa6. 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/BE8LH2200039.