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 0x2aa9a038119223c9becce1de927143272dc3b1c26a519b22e1cf4dd4f25a542e. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bedb91f-627f-417d-9806-a813c0d18f98.json and https://artists.proofprofile.net/proofs/artist/9bedb91f-627f-417d-9806-a813c0d18f98.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 0xa6d918b645d4a3e03c5f306cfdaa73d70afe13f1df622cf5bdd1c884d19d1826. 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/GB7NU1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cfe9bce06be4d096edb4fb0dc792df1686f834e21374e8158329df6c6d5693. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB7NU1100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdb01284bbdfc2d49d6150fcefebb8de08ee1104860b3c65430a7031f038242. 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/USWR30910638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8a40849b5095475fb1b03cde0d795f93ce18723c846898cc6b6b32abe8be26. 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/USWR30910640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068810ccdd15ab4c276cd9f53811e63f3656ea9b19ab77237efbb5073225fec0. 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/USWR30910642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e1cc1ae85727a679b2b0c53c939300fbbb57a6fe60aea8e700173d4b7f990a. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:58Z), 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/USWR30910639.
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 0xf2518e1108e6885cd6685b29b5e86e08dc53d00b4d99795502ff57b93878fc9b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USWR30910636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64311713bbbfd4e0ced49130537508abd757298992abdba4131eb422f682dea4. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USWR30910637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1b41af049728341ba8640dcb843b15eb2872302f9ce7754d92f5f40540c8be. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USWR30910641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6805241ae5eddaa5f82fb677ec24bccb031a251edc818407a282efce1c243d. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USWR30910643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbb8635f91d24cf168a7bd1f4073779a0ca2edecd7de397d7035d63ace6637c. 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/QMTR21300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d488b0ff02fcc86c8e996144d59bbae49ef81621505b5dd84e5c0475f9be8d. 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/QMTR21300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d6ab9bbe2d5701a9ec13ab9b228cbe4aa4b6d796aeebb1069dc93d1449b4b. 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/QMTR21300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fde052ccb9a47c505cc49570bd67f2564c64eecdd4f3196203b727a81f810cc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMTR21300008.
N-Coded Music Presents Smooth & Straight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e138da144da77d1f659a8487890b83eec91e9b26f746f1011f28dda5948db. 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/USWR30910799.
Smooth Jazz Journey (30 Tracks To Relax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1197dd62b48acfcd80115568e6709c7a89246298dada6471cd8b02cad0a857. 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/GBHEA0300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312578fc84689c13ad5326f5dd54ca7aa5822444f725de9bea7a9100a35c6e89. 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/GBBFH9500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fe5848e6d2ea91be3ed66874322df567620cac0acea2b92807bac7dfb93810. 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/USCAJ0900021.
N-Coded Music Presents: Smooth Jazz Greatest Hits, Vol. 4