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 0x0ea23594ee666ba411703892933f0d8b20e5314a76ba96b3945380440f71eab2. 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/c89c065d-dd5d-486e-9a26-fc9466b46d1e.json and https://artists.proofprofile.net/proofs/artist/c89c065d-dd5d-486e-9a26-fc9466b46d1e.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 0x3069ddd64be1628dba68164a68eece3dcd84a9a0700b4e451ccb93fbee7f6791. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMKTL1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3da50943f5847412682c81691fddf35c0bc4ef695ad06695c29d6899f9c21e8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:02Z), 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/QMKTL1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8afcb2453d10c0a2f7cbc1b471ec4e0f7639248173849a16df6fbf368d2b295. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMKTL1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62af481a197c40214aa2d8c82ca5f39bd74bd862d9d7729f53902ee015200bd. 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/QMKTL1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc02b4114e18f213cce930b574c611e6d42a8fcee1aa3bf20f7c61e9fe0ac89f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMKTL1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd1f381f07950001e1d3d77928549e6e7dd8dfc733d817bfff9b2d991267a06. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QMKTL1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c6aa1c0f70cce165b4bae170377b401bb1aa0876db2ad97ee58ae1db9af89a. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/QMKTL1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2194c4b1d318bbf308f3ef056904e2b4ff6796af7f9f8034f6582f4f12eff8a0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMKTL1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a851e50585cac84e41a4bd819ba5366c778737db99801e9b99cb0419e53f5f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:45:00Z), 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/QMKTL1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf80de8d5a362f1558b00f573ce1b2cf309bc3c89f5bfa31ca03de7aa5fbceb1. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QMKTL1500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2b7400f1352cb35ca192d86740bf578189c24ce4b7ec069a5efc1fd7dff490. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:12Z), 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/QM6P41757333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c9cc2c402a0e9695956cb9842b042057a5518e63f3209b45568ba947f43eaa. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM6P41757319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7837efcf29ce3480fc902a6af4f79b5faee3e44eefea9b4dc00b18b9a0d72e4. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:06:29Z), 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/QZDMQ1802205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f4b49069f75d697843a28cb9f835ac98385eacb24c24eb24be9f5328ccbbb2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:02:13Z), 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/QZDMQ1802207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26063ab9b3f9ddd496e847f8cd39f1e8ccec9d600ce3d93b29a696d6011339de. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:22:31Z), 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/QZDMQ1802208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d42b7b55999846d40c7825ecb3b31abd2d5333b81a8b9df1a029e8317a93839. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:09:21Z), 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/QZDMQ1802209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7349bea0a84db74f29451544c8ae70380df2bc20f30990c74848545d3c88a37. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDMQ1802210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ed66ebd805f773eba387723286c4dde1f51c557b65f54aa150280ae2f23adb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM21812129.
Colemine Records Presents: Brighter Days Ahead
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180a7c8886766cb1f4795ad82a8c5a4007ca3d0b393800f8eb852d38073118ed. 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/QZDMQ2019001.