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 0x5df9290e22a14dea096e85e586698fc405a3fd1bed707185a336202c04592b55. 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/f98be7d9-7981-49d6-9087-91189322e562.json and https://artists.proofprofile.net/proofs/artist/f98be7d9-7981-49d6-9087-91189322e562.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 0xf0d185683873d9f450fba91fc8f0ac0c4587f03f9c83f52cd78281b58f68acfb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USRO28903104.
The Many Sounds of Esteban "Steve" Jordan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacecb73c657002ff117d2d9753eda9eaf9816b2f629a1d218c613be83d0c22d2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US2Y30631709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f2a3665e24861d7ed5579b7d76979488cf74278a914012d2fab7e51294f73e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US2Y30633692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbcc04aa2655138d1ed2a4e830fe32bd061d8abf572a0ff0ac40eb6f6ebb9e1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:36Z), 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/US2Y30726752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ca24dabd7d0b7f46e722a31aa6462eb21570bbdd67209c34086db9fbd0f915. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:08:21Z), 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/US2Y30726756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ad8d13fd7a910308c70d8817a65d703e3bb79ff08d1c28484f4c9327eeadd0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US2Y30726759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecdc27a7aec7219c60b864721746c8041afb9e857081da91923b1740500edd4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US2Y30726760.
Prove You Wrong - Live from the Theater at Ace Hotel/2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4b56602797e7f7036af8108a79010ce04f33fb7973140e4f7c7c2cb94a5c45. 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/USLXJ2143109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a02ec370a06e2fa7fa54ac9bfc4d26d03336f0f0a38562621d7c5eb28fac2dc. 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/GBUM70710571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f740e75116dcef2733dc791752a2c83789c0bc6b1879e9487f6816dcfb7eeab. 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/USIR10110156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dded36f4c776d13da8c88ed46eb36db40e59da31b629b3cf5154d71d64c0bf. 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/USDSL1004201.
Kyoto (feat. Steve Jordan, Will Lee, Steve Gadd & Bernard Purdie)
Pure (feat. Will Lee, Steve Gadd, Bernard Purdie & Steve Jordan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59de080c558e65bd02b4c8dea20173c1a398c120f211cc6531c519ee284d7532. 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/USM361000001.
Boy Back Home (feat. Will Lee, Steve Gadd, Steve Jordan & Bernard Purdie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bd65e5e3b64f965877db0c7fc42ca3c17aed47a3ce29ea8e3f5865561e1bd4. 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/USM361000002.
The Good Life (feat. Bernard Purdie, Will Lee, Steve Gadd & Steve Jordan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bb26931b57552babc607ec9352d3dbd1203a8802bc0c2947a03fd989516f6a. 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/USM361000007.
March Forth (feat. Jonathan Butler, Steve Jordan & Will Lee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315c4988bbbaa22fea44adbfc07f429592597311a299194ca67d1dcb44dfec75. 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/QM9482100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2614891c3b670d14cc17a2e4d824376e2018ab10c878baa17c4a3603597227ef. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM4TX1849970.
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 0xde339a1470992bf4598adc3a765fd2265bbef6f8a674b6a0fe37a82291f6d8dd. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM7282095571.
That Girl (feat. Will Lee, Steve Gadd, Steve Jordan & Bernard Purdie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd389b5f52d278d4e2c16b7671091858495e5b3bd64d22a38eb6d3ebc7bdae5ef. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USM361000003.
Crossing (feat. Will Lee, Steve Gadd, Steve Jordan & Bernard Purdie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5b1e16bf8bb14babe0184622a86fe0883c38f7a94602ad9d75bc7970d6c8fd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USM361000004.
Tiny Tapper (feat. Bernard Purdie, Will Lee, Steve Gadd & Steve Jordan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49844a2a2f2ae984ce014fb232b414758885d7467a50a185b3172b9b7f8b6288. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USM361000005.
Midnight Walk (feat. Bernard Purdie, Will Lee, Steve Gadd & Steve Jordan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0f71b3581eabe51fb20d6ba12a748c36c84df3e58a83f61915158df622f73a. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USM361000006.
Driving in Texas (feat. Steve Gadd, Steve Jordan, Bernard Purdie & Will Lee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43026622386dc24843b92c9f3dfb6d3a2d5dd49e6e22d17f98d5409afb8fd968. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USM361000008.
Through the Pain (feat. Will Lee, Bernard Purdie, Steve Gadd & Steve Jordan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19941a76debf7a3c453834913a03cb45308dccaf4c6c18851ab668ea753caa1b. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USM361000009.