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 0xe42966eb03d3d93d31aaf7b917c61cfb9b498b12d219ba65d1eff6294a88d752. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0db984be-7770-4f00-a760-046035a4071c.json and https://artists.proofprofile.net/proofs/artist/0db984be-7770-4f00-a760-046035a4071c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
First Impressions (Continuous DJ Mix By Carol C.)
Turntables on the Hudson: 10 Year Anniversary
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 0xd95b5166433f8df2adbb8ffca0d4f9d4c9665c20afaad0eba13fc232f29b1df3. 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/USCCW0810140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bd58d9b23f3b825f55731d438332e44201302cd0bd8a010cf7ed6f6e1214f3. 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/TCABY1455283.
Do You Do You? - Chancha via Circuito Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb31931b3630a1dda589bae63b16240e476eab8a81b32af52c57f4a037bab5cd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCCW1610907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a2709947cbd134d7a7b4642065341ebb7bb7e06cbe3cf7545c867ccc640d11. 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/USCCW1610917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9328d2b46905e3dd1bb60d8f19b4ef851e5145a80823eb95efdd3c7ff08f8461. 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/USESL0610905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6333acf5159d4f3a549e6003fa35d293513938c5e62089108c61574a6eea9d3f. 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/USCCW0510047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4e0d7fa9a8602b0a42be9460a9d2902db98af556d24acf2572d6078826d997. 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/USCCW0610002.
Cleopatra in New York - Fulton Street Bonus Beats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82c02cbb340e1d52b960a25e9fff70b84ebad20fd3a42926f43d75747c8d6b6. 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/USCCW0510009.
Cleopatra in New York - Madrid de los Austrias Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f37df9aca90020233620af178c8e524abae963fedb0c1623b412fa6e01c7ace. 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/USCCW0510049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278fc4e2fd7a329b6c59a4f58644a02084b1cef36bb3df1485dccf1cdb37ad10. 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/USCCW1610646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdadaec29f0f901b74ebb031f4f0434f1fcdac60bd5286ce7d90d2d80049e1f. 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/USRNC1302401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6333acf5159d4f3a549e6003fa35d293513938c5e62089108c61574a6eea9d3f. 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/USCCW0510047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6333acf5159d4f3a549e6003fa35d293513938c5e62089108c61574a6eea9d3f. 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/USCCW0510047.
Cleopatra in New York - Karuan '07 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4c66b05b2d6e2ce850be599a33638c2c0976a73aef10f5c9c927e50f278a6f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USCCW0810150.
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 0xb9db907e4d6ccde73fddce1a387858b7a77e3a4558237311361291389dcd3945. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/USCCW1610644.