Cobblestone Jazz is a Canadian trio based in Victoria, British Columbia, known for their jazz improvisation-influenced approach to making electronic music."Cobblestone Jazz - The best Victoria band th
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 0xaecaf3176a52f4798459b75e1e3ffd88ccec7a7e2f0ebeceba847f5715f4ec3a. 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/21f64fff-4138-47ac-bf0d-5ee7ca633664.json and https://artists.proofprofile.net/proofs/artist/21f64fff-4138-47ac-bf0d-5ee7ca633664.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 0x3260a2a34f87fa41888646191e7015179b6abce44b631445c79f893c8b01b670. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DEG930700662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6b87c0adf7d51e0b4d2064133fca18e01e5ddf1c1f6884440ce67c45785019. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEG930700663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aa1458de4a30b14a8abcc687e483d346111f5ef3f3a67d346b6bee38cd53fc. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:05:27Z), 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/DEG930700665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec72def413d73f2a6e8f3ffdbb83f6d7910d7b233fc798884eca04658e6bc039. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEBE70600092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f03b8d3539ad5a51417f843a50f10651b2b634d4d2aba37fd21a5a251a33eb8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEG931000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12388475095ed44d45c5ab3f68e81ba2b499ad940584f6790b9150dd578e3f88. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEG931000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84072afe04b7de5a4e7b4428b8966e05e39c8b1c7f2a0afc10f29823cdb8e5d3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEPL91527161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7987c0578458902abacde1e4be4278beb939e88ab5eeb8b9dc1efcf29e70a59c. 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/DEVY92300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf69095e569bf6b298071c53ebb0f0f36fa792b0f2fabdd9ff19b3417696b7d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DETB32401693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28f2706216b04d577666c45cc1b8d1b8086ea22a679e7f6de0ab9833fe53b45. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DETB32401694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d611a5a12548d21825ac4b56d21891ad65262d04f72f7d8f16b513ca13032a2. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DETB32401695.