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 0x86ff9f1bb64fb997fac79ee08135752115d049dc8a8c9a5aa1e5b96dba75234c. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f950093d-7cc6-4acf-a696-6d8b5e6c6a84.json and https://artists.proofprofile.net/proofs/artist/f950093d-7cc6-4acf-a696-6d8b5e6c6a84.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 0x327dba66132594112aa1e75fd9623cb2596770f8317ea5ed1df39e2c73427379. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USWH18901024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076ce9f596dd75fa4b3b997569c7b275fdb820c0b3ccb2e39aaf0188f8ac806e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USWH19001025.
Balakrishnan: Spider Dreams / Beal: Interchange / Gillespie: A Night in Tunisia
Variations on Winter from Vivaldi's Four Seasons: Texas Rain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c2d709231c164e5598b8976d161a3556e71c2b1b82bea17df8ee979f5a28ed. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/USWH19501162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbbe02f8fb15101f838f77e1c6fa50b3370d1665cf4e93ceeff52a32e9a59aa. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:01Z), 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/USWH19501153.
"ART OF THE GROOVE" Music by Chick Corea, Leonard Bernstein, Michael Brecker and more
Art Of The Groove - Music By Chick Corea, Leonard Bernstein, Michael Brecker And More
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3204d94878fed1b9df97aa6fcb9548ba4d9581dc73ce6f1e59855f3f6505a5f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEB379805870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0777239d84ec2957f1d6f29a18475bd41e218bfa356b332765b506e66b2b59d. 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/USWH19301184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1ba2671b9a0214ec3f3142f65586c90e676843caa3933cbc0a4eb9a98b78ca. 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/USKO10202748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038470e910e9ca63077d18ba8306f214d7213690fd376321d3e8374b243443b0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USWH19501061.
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 0x69d4db974995c55750c3c97b8d7c01a3de3039572965651198043abbceebac6f. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/USKO10202744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab06a1450ccde9c9d21041d4d2bc76dbfb85d071a0c1aa04828b1a335e9cb2f6. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USKO10202745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d94a209f89ab1895df56c10b64925101508664a0868177f8efb10cf4a2de619. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/USKO10202746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ed7a987ba3999fa40466fed65e8891035eb69f9ba90f81ca6506f342472fc4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USKO10202747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfd727efadf2ca3a1b88052f8411657a38a4907c7ae7de4add5ad7fc0b9717b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USKO10202752.
The Romantics: Romantic Music of the 19th Century
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29db12ca9be758fcc260c0a0934d50ce67c7b8003ca44421f500889a5e8f1600. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USWH19501088.