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 0xe66f18cb14de517c7b493df6053487431c2fc4fb98796892564c7bb3c142a97b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6824130-658a-44bc-b00a-f4bcb573663b.json and https://artists.proofprofile.net/proofs/artist/c6824130-658a-44bc-b00a-f4bcb573663b.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 0xd805b028c5ebbe5508038cbb0da1d806f7ab8212945341c6ec1d08b106b54cfc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMK3R2290475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c5703fc8b7d0c4aa12ae3b609037f4fdc2b33018443bee2554425b2a1dce66. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6A42200539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380937e6d6227ed0a0e301f788733d57489b2fb9afe0ad58713a21f317d81162. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMP7L2271682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8023f6ccc9605a7799145698cdb1a4c83a1657d39f88d2504fbf7e53aedf412a. 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/QMA8R2242491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4ed05ded56a1dceac7c19861c417af1523669b2ab6d1d1427010a0d4e0b5ca. 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/USUG12206150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f698b88c5f34d6b4a418c75fbadeb7e68b1758c5160085168bae25e6e0bb54. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUG12205962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bb11741b29b498503c5ea1181801bd429a220f643aadef77691f0bc40689a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX202228529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eae94710d70c281065c6343f8e0623e41fa5918709852698ad634c241711f7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282206092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5941dcc293f2fb228303465ae94bbad1534a950e7e2db63bc94e95ec2bcd47. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX202213200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a34596795b8b83e229168432b97c69236deed80f618e6e0900142ede08d7b2e. 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/FR96X2240157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a932b62d7fdb9288a277a0a72753f05c3e8b3bf27b8bb84870a931fa55cbe96. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM1GH1237308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e47b7722da5620f495cc87e3faf9b7431ed89102efe408c4882d187a0862b2. 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/QM8U02367826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3580750401c32e9e0f2f170b71171fac19ee53a354b804f8325b030bacb991. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4F22301326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0e2d01ac5a9df93ead8dc3d4a2478ac97e8961da0c46406bf9735f462e4d2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM9Z82305643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3bd69e6892ebe6127654554567376c05657903afb1c077f7c5b0db5d0830d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM7K12309212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e3da46207afebbfa229d742e5212deaee252848ca686a990cade8119228bc7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6G12352683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fd4a9d38988ca73cbc8bf9891d4d6d137018615c8ff5d24ebf9ee04c4c98c2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM9Z82274698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa818438c959cd45f2dcfef0551d643b1c5c04a7dcbda2ea31ddef69efa14b5c2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM7L62204720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef821c2596155b490b2cb320543898d81b976f31431a5acf877b5dc03d2caa7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMBZ92280285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f698b88c5f34d6b4a418c75fbadeb7e68b1758c5160085168bae25e6e0bb54. 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/USUG12205962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eae94710d70c281065c6343f8e0623e41fa5918709852698ad634c241711f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX282206092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5941dcc293f2fb228303465ae94bbad1534a950e7e2db63bc94e95ec2bcd47. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX202213200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb00fe73970b769910f09bc6d9bc5241aeac6ecb5f6bf1ff9e2244b4bbfaa698. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMEU32207250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bb0c796ee6cfdce179a2c6eb232ea5e4d874fe0eb49abfae543f5e39aaf715. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMEU32205116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951393336d3fe115527eb518113f8d82f2799a5cde783bc786457b87989964b7. 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/QMZ4F2262912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21626e9a54414fdb4b69f47c211f61ac19c47c6f9b204f7b3059b81f3a3b73f1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM8B12387245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3629cca62ab88bf9522da4ce4b7ddce851510ee1b6d71e3c0d1f21d063105c4. 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/QM4Z22346821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a54cf7505c5388695d4d9f6a11201df60eaa91fad8e988239d6a9e4799e7fc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX452211575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95308ade512f9b206539901db4bbf6a5fbb868ac0f6be18d705e27596bed4c9f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM5L62463298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4ed05ded56a1dceac7c19861c417af1523669b2ab6d1d1427010a0d4e0b5ca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUG12206150.