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 0x91f20036043d01114ef2a95f679902529746db88eb62b658aadfce0bbd318eea. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/294730f9-73ca-40c4-b97b-895cafae31f5.json and https://artists.proofprofile.net/proofs/artist/294730f9-73ca-40c4-b97b-895cafae31f5.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 0x170c5c0333c2ed04c2a235f1dc72f7d71b5825ca165375d4756793d7b7d9fcee. 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/GBRH31200613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3080207967885a7d61c58a66e09431ba35c1f6d1802f5826a5df6816bd35c6. 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/GBRH31200614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5f7d753c614c86efe378d1b3746e48a3b84498b43af4cf4115bf928b22bd42. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBRH31200615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff811f86126e2ed119567e409b59e108ea78d836cd7551b0059bf7f927275b1. 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/GBRH31200616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08ba1ac58148d7d3e5538d3ab00809719b1fa39557522a9374463eab0c0177e. 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/GBRH31200617.
Touch a Four Leaf Clover (feat. Toyin Adekale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a9e7b25f9ebe010f3d0f9cc70c6533bc80dcc85b984aa8a15fa957bcbba9b2. 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/GBRH31200618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146243e5c68b8cdb83d1a2dd03445011517d2331a41ac1b18466b9eb99d20625. 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/GBRH31200619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd2695b42a70a2676101148776df1cb72cf0557d88ca6b3342baaa66916d2d6. 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/GBRH31200620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a2af19b638fc05d5737444008edb2f6d8d878bbf9922fec434843e8be7c9cf. 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/GBRH31200621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b7fc14632e637321d0908cbe2021492ea340a0a80a1267d81e782e4f7c6956. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBRH31200622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca61fa050531e89668f7b708ac24e561215a35ad7db3fdb0870762fac5707f15. 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/GBRH31200623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086dc4e472c1ce07699443397d18e787793270f59eba5d76f2bf99cc03546526. 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/GBRH31200624.
Lovers Rock Revisited Vol.1 -Neville King & Friends-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0854cecb2fb50428be943e5ca8e87a799dc49d5642a4e4cbf735c90c184825. 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/TCJPV2380351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59979ab85c8f0a7cbb07e3b8e3b499fe56fa08cdd160b0bc82f840ccf9218a31. 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/TCJPV2380362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e3e50dfdb642882cefaf211b17e74003b033b5057c288e41b0b0bd93bf5b17. 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/TCJPV2380708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc032699c844e4f4f16ba24beac228712fa87b1c8d0d1ca8a816d6f014963ee0e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCJPV2380716.
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