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 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 0xa770c4f30f203b406f11d2072e2c1a292bed5962d918b1f886edbebc7fc157e0. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aaa2bcaf-2eae-4647-af60-ef7e32c9bf63.json and https://artists.proofprofile.net/proofs/artist/aaa2bcaf-2eae-4647-af60-ef7e32c9bf63.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 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 0x58b33e4d90a2b8aa1005354dccaa51a207da954c4d5ff044afb17abc07d04813. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/TCABU1458575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c31d08b4e3592e7136974877dc27058c953474d28096d7f8890d36b55c29ce1. 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/QZAPG1719766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0445077e50f8dac0dca5c2ca17c7bd1f63b6faf0e8368257c274efd825a81f17. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZHN72500255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdefef56d2dbfd35b2519339d74300779753f1da52b34865949f066891a1a988. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/TCABU1458578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660cc728e110dfa9454d300b8211b7ea29e53cde163f749a3dbd581099bce3b0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZAPG1719763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd8710a3515ad6729aafb60c3d08cfdae001ffc485b882ce257c5af2ec2143c. 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/QZHN72500257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd653ed2279682aaaaa4a0968591e5db78649eb29cfeb86149ad39006225bc4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHN72500258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1c81a04eb4eef7cda2fc9cb86c6b1045ce625a44e6e5984bf1d31898f69496. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZHN72500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe205b8d140fbab5a6995b9a543e0796003fa7a4e0f384a4e6e910e362854056b. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/TCABU1458582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e16e4877244646a4c65110e1bda3e0f83c9b97562791a68891f695b814d3642. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCABU1458584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c410a5e4f8a1717c170099afc0a6c0c1b98e42533f2d499fba666b01f3a31. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZHN72500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d70ea47ea5b257efbb718ac93ac4681c99fb67d4469e5ddfee8bfa5bf7f712e. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZHN72500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd142b2faf00c994f0927232015289734abba0fe7cc822607a6b1aa5683348f05. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZHN72500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2590bafd4ee71e9a680a3b061ad1b45febbc77af981bcc0b3553a61e6f7f4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZHN72500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990b98b75171c87e8695c96ef750934b3adb71aa9f555c60f55595cd8573703d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZHN72500274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1ab06e7682c2db774c26dbcad2fcba0806b4ab2ff263d0e213b4cdc08f2b44. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCABU1458587.
Zevengesternte (11th Anniversary Edition)
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