Super Blue is a 1978 album by jazz musician Freddie Hubbard. It was released on the Columbia label and peaked at No. 6 on the Billboard Charts. The album features performances by Hubbard, Hubert L
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 0xf9bc7ad3fdcae2cf737faceb18a32b55734ef3b37139a02dd9b687f09245f810. 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/6641834d-6011-466d-adb8-294a1c821f3c.json and https://artists.proofprofile.net/proofs/artist/6641834d-6011-466d-adb8-294a1c821f3c.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 0x57f9f7aeb4c8b9b0d7a9a3d20f3c0f8fe93662815dbf7c95363af8fcaf90948a. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USQY50917205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679a65cab6ec8feff9a110f105af1483cb43b3665956726b6be037017d4cec6b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:35:07Z), 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/USQY50917206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe935f6372594e75f756d43a42c74f597dd92b2610c8cbbdf37b83ec5ae7e804c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USQY50917209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5676ea6576ac00cbbe727a984770830c3303dfe41118194a2a136556072425. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USUYG1234825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b67cea055bb78f520750f1e8c1226f99cf52d281a7654cdda81954503e912f8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:49:56Z), 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/USUYG1235802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940781e57d33bfd172517a7e138d4eece16bb2a1c1988347f221de92add42754. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USUYG1285998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9929bf4383ebb467615a9da68e578766a2398488053c0fea44ad4a1606475cd8. 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/USVPR2000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaa1fe0209018747596658bce03e2ea4b327c98f1f0358efa8784d83004eaad. 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/USVPR1900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7698e4abfe7e9fdcc2343a252ca19a1874298ebe05ffd26d42a27c5e08696459. 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/USVPR9805536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57e552666a386c06d7a1d3884d886fdcde1b474c1cd74b951f92a3453b1e96d. 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/USVPR9705161.
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