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 0x3b5da7d28948829ff9fc8a7c955a64a230d7fea8e18ba0d1e7bd890f346ef9cd. 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/b012cb75-166e-4c72-9f7a-8cce83563e65.json and https://artists.proofprofile.net/proofs/artist/b012cb75-166e-4c72-9f7a-8cce83563e65.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 0xa27d771337b98009d47cd1208f4919b7bbb191933667ad3e5696ecf38c8a56ce. 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/BK0JU2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13f20bc821f08147535c945ad1498c909c6368a86a89a179d043dfb39ba2f05. 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/BK0JU2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bad0df1e50f6a311cad46b37184c7c2abb5a08a85e518ff6f94652fbc93d5d3. 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/BK0JU2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca156ebb1fa33d5889ff80aa162c20d580c8b1f08680823418054d00fb53681. 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/BK0JU2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef00db44fb4db1938ad8fc4cbc1b78206d00c3bb96dd3e920387f823494e805c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BK0JU2400004.
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 0x735a8007e8dc1609abd1e258842b3ccd79a733bfa6b3c8211b1ce0bb6799372a. 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/FRX872344423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f60108443d5e299475717eed00f1c1eb04efe19cf95e65737b5d7b69629959f. 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/US83Z2237221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0b461827fd42645818c7b8d33d10dae81d8cbfd035a8bae6cf0f0b81189bd7. 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/US83Z2237222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75849f50ba950d5b0aba5db81bffd7967cdc7720ea5e04fe1a5198d73647978c. 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/US83Z2237223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17e7210ee04007ff693354e6c8614c0d1ef7b64c6f3fa8cf4690dc28b2e3d28. 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/US83Z2237224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21e89c26e32a3b1bd8b6e4d5b5dec64bacfa3f974f99e03fe9cac9e0988d92b. 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/USLZJ2230433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e8a06b376e302437c9ab818c8e4628a2c610a5be57b43d97e72c99cd55a8b1. 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/BC5BL2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cc8af673da8a28a0aa1756d479bb158ebf3585debf4d5cb83425fabca762c5. 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/US83Z2207562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028ab52ae62053c232386ea264cd2130dfe4dd0f1f595373d46fa4a34424234d. 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/US83Z2148451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2327f82d281e30734ffd80a285af7842075b0408f2e6fdda8e02b07b28fa1d5d. 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/GBLV62105584.
This Is Not a Simulation - Sterium - Sterium Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3163b26ecfe1d2b77c7223125c74940e4a794abf0cb03a7f5075f5d09a819c5. 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/US83Z2139812.
This Is Not a Simulation - Mochakk - Mochakk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4535a455d51c288b52bf99eec5ffc66971b8c74708aaed17743f1b14d83ed46a. 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/US83Z2139814.
This Is Not a Simulation - Malive - Malive Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180b14625343f6cb3279cae35e836c38d9aa03cb2b14ba4a42d138c52cf00f33. 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/US83Z2139815.
This Is Not a Simulation - Cesar Nardini - Cesar Nardini Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7c4822a93bc3e6de515afd4c3ede67314268279fd2409ecc4943085e806894. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2139816.
This Is Not a Simulation - Jay Mariani - Jay Mariani Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a6a1fc19aa54e6fc8203ce3997837dc14ac0a7bff3659779dc8af546123ff2. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/US83Z2139813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517c9cf33760bcac97d9663adec1a8464f672e1fc00c2d74a9de2b2e3e9cd5e9. 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/USLZJ2161347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4371e92d290c4f5f8a81ef52195c43b1f01fe9442327323d902f55f66651a538. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USLZJ2161348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9568b456322381d4d8577f2e3681ce03182eba3e799a7c3ee8f2522b671a2a2a. 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/US83Z2025830.