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 0xd63cb66f273c0e06c9c3d22107c969b687c87c70e36d6bd5f6894bb3fa88bc44. 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/369d23f8-969b-4812-a083-af3423b05c2c.json and https://artists.proofprofile.net/proofs/artist/369d23f8-969b-4812-a083-af3423b05c2c.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 0xa9f845e7753838beb3776c08ec4c3d2d52f36284284e1914ebffd79fba7a910c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/NLCK41059100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8989afbdb1138082790200c4bd8944a58324489567286abe4eed91304d736413. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEYS32100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dea6590976a2b4490546a21bebccdb2a72daaf252d07aa12d2c4afbdd452f9f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEYS32100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdbf45f6a55afa85b3ae856ad72a90ac19a3cd73ffa5c4212a2af6f6100152f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEYS32100704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2efc3b8ef981d10ea22a372351c4772009f98752eb9576d9300fc313610daea. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/NLCK41085304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e1578970b7609368ea239a712583251ca1d68c21c17acab19b1023ea0464fd. 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/NLCK41085305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55b3ccd10c40b727c6fcb0aa9df49f4bede5a9b523f2a19533cf1ac49903f8e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BEN582100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df39f6e2f21d0127ef313ddcc71f48a41520176fb2a8106692b1c32ed8bd3eb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BEN582100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9839956f6e320267c28a67da5f881c3c3a6185b1da03afb331cdff3a50dad055. 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/BEN582200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c5f1b70898329b3879df42d49dd2d48c119d597574294267151994115e3e9e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLCK42216233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14a442faf66683766ab2c0e7460f1ea6b1661bb7c5de70f73e3f147692f8a11. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/NLCK42216234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42623dc1e31b211ce318c5532ecb50da612fe39eb4f55826f17f5014209df160. 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/GB2AF2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f6576980a0d5290bc9f85e80322492147a2a3b1d1cbc74697fb027255a6ce9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:23:33Z), 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/GB2AF2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383040c6f031b8dab8b684bf8df71d2c54fd310173952d0f279757309f76b004. 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/GB2AF2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a0a08db1008e8f3cb6e7cf0f5e8a1d339ffa5b17b6026328426ba0d7598cd6. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/GB2AF2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fed8af34dfb756f47854df30056d26ed4b85f1093fb001834bd6d003b74ebd8. 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/NLCK42402661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4db01c364df7eb288143e7617f71187622377b77d709ed5d8907faea26826b1. 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/NLCK42402664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc395d1f6616e1c6d118bed75ba984258c71e0457a4ad311d0ca7d3f0966453f1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBEXH2401964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f47e16df1d43273571ba24c77bec7a6b0472a7cfdab7225a149bfba054817c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:54:34Z), 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/NLCK42419580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d352e3c9cf06642ab653dfe3c8a3a916d2b640eca0a13f4e85afac2cfb79f2. 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/NLCK42420782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe690a3a8b81074e1621eb00b57edf58a3f8a2d816df009863336dce585b1122b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NLCK42420783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb792ce7a3f27c356a4ca28f9486adaad518e90a02ce9f4bedb9efa71ba0db2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:27:59Z), 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/NLCK42504881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda65785d0cc5d4af8a6021e967301e393cdeb9609c5e08c3a2c2c0b5a580160c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:01Z), 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/NLCK42504882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7186ae9b22b04ade7c202d0e229d787ff5b7102a0a6ef16b483e66697573555. 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/BEN582500346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4660c5f44ea5e15b6a3402bdb7d7427f510c8ee27ac8080b47e7ac5a3c60fc9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BEN582500347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c24940ff50148bc7c7bb9a359b261cb5d7cf19ccafcb3125c97c63f2d2060e. 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/BEN582500348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7284aaa2dda0c7913cc5a7facabd4248c8a272111ede34f519494cc88d53aef. 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/DEH742000746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8536bd429040bb2d327c808fb9b704664d6aa93537f6a1b12b1b6a4acf20436. 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/GBEXH2401933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e1575a1ec88a50c9990308f51695f398d25bc48204fed7ed923fe2851b60c4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:56:40Z), 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/DEYS32310904.
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 0xc6affa083b2556a72ebc0b8a14aaf2bcf5f116f7b89fe4f405df5418381c9f1d. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/NLC8K1400396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f2eeb3724307ff2d5f293d8e45608baf2e0971d4913ca88d132f7e8df20e41. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/BEN582100414.
REBUILD - Earthquake Fundraiser Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1465d98d946eaaa52c1450aa2c430a7cb30f737ef34f81f2688c78ab859f843. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/GBKQU2334842.