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 0x0d7566fbe82e71a57c6730b85e6a6f01e48ed277a11a588c099cfa65be23139f. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b9c2c4e-8d75-4757-a5e5-9742a2950e3a.json and https://artists.proofprofile.net/proofs/artist/1b9c2c4e-8d75-4757-a5e5-9742a2950e3a.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 0xf46689473ba8466b605e9484de4f6c784df31f240ea3c29b7fdd0e437a3d6fc6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZF251800095.
Defected Radio Episode 150 (hosted by Sam Divine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b0cf5b5f453bf0f4d880fc0b82d2107a33cc9ca757c47ac1a519975b96897d. 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/GBCPZ1813245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4580dcc6e2a5364f2a55eabd829ad705a6f890e53e77dd5228658f158b4161f6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBCPZ1813250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c319ecc4ea954e0974dfad1d7e1030c27aad7363551c47c14097af99dac268. 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/GBCPZ9907715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809e863c19dd4e678512f81be0629b8477e3d321e3eb4866dcf8e2a2eab2a6e1. 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/DEB909900206.
Choral Music - Isaac, H. / Josquin Des Prez
Lassus, O.: Lagrime Di San Pietro / Melancholia
Choral Music - Hofhaimer, P. / Isaac, H. / Senfl, L. / Josquin Des Prez / Festa, C. (Motets for Emperor Maximilian I)
Deliver Me (Urban Blues Project present Michael Procter)
Deliver Me - Urban Blues Project present Michael Procter; UBP Vocal Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624d3e8f7424702b3b025153bd3631b6b96fb91d9aa08f0a39c61185c078344a. 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/USSF70200181.
Love Don't Live (Urban Blues Project present Michael Procter)
Love Don't Live - The U.B.P. Classic Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff72f04543078d973924f1d4a255e308b768fec5cf108e2457938bfbf5dd99b0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USSF79600031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd13db26c2608fb55a91d45805bbdd23026663051d440e89e8ef62590fd4370f. 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/DEU231605119.
Deep Grounder Presents There Is Soul in My House, Vol. 29
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bb7925e648e7cfad9e3515a85baaefc7580f5ba7a5e22bd0149b33cd62b703. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/CH8081000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56edf1dc9c64a000b0b14cf6dfc5ce2ccd8cb4f8873555057dc327104769ec75. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/ZAL071000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f322e3137426e639c39eb43b9dc4096fdb7fd85f8fad001ffcdf2ad667ae561. 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/CH8081000360.
Cool House ... Cool Summer (Your cool summer soundtrack)
Quantize Recordings - 2021 The Year In Review
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aa1bd1e463a699f107364e03dda0a2b793680e60fde90a4fe463a1f2fcaedf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USZ9A1539701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f34542f6f183bf634c9c8d1111b911e562833f623a8aab8fcf8f6a23266cf2b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USZ9A1741701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92926c66b8837c1b9af6972336bcf7c0052bd9f1a457c4583bfe5825fb4e3722. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBLV61716409.
Club Control, Vol. 1 (Mixed by Tha Soldier)