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 0x4e625355e10d0ad9df88c7cdfb41b01286cc5c64cad838ff527abae112078d79. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fbe9129-3d10-4e48-986f-1b24696cfc1c.json and https://artists.proofprofile.net/proofs/artist/1fbe9129-3d10-4e48-986f-1b24696cfc1c.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 0x4ef25dc36fdf7f8844f81de3f596bee480b891a65e8c2d03612d120c6c1206fe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BGA472022193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8564487d77542c0d58afce4ba8b228f9395786c00a8ddba0a6956b302ed7ac8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BGA472022194.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee77e0a82ed5ab711ff77d1bcce7f1d97f8ba4188710cfd05c246c4f764b87fa. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BGA472022197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bc0e35128e97bcd6d664bd68fbfc95582b2472eff8637c56504ac766534162. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/BGA472029695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ec4298d2c5c11886f280a1f8e9bd973dd96196a789ec610cc18faf4eb14203. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:51:57Z), 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/BGA472029698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b86258be15bc84210f9ce6cb002eef17b8316a5d8da6e8aa4135358d3299bf. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BGA472029704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc782e5d004a6869f5dc3f08d0c0f203b2610456e6cf25751551823a626fcfbd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBSMU8962320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab908af833b2fde65ff238a62ba0151349cf95f0410698013944e90ad96fd5d. 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/GBSMU8962324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e11247a73e3c5d5de52f02ecded3b2356a804af2d9cddb0f814580e4f9727d5. 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/GBSMU9667529.
Jazz Cradle Melodies: Coffee Lounge Serenades for Baby
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