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 0xc90e667230762ec4bcd0f61031be67cd599fbc7c8c7ad9125c5f0b650521d3ba. 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/1b31643e-5153-46ec-a80e-17a84cb7861a.json and https://artists.proofprofile.net/proofs/artist/1b31643e-5153-46ec-a80e-17a84cb7861a.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 0x36ca02db60553bb2c96a2f5f2217acd07da45d9e19a95a02215a7127ee5ab032. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/EGA010541648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf951181a487dbca8f9498cf7dee307267f8e4cbe5203c799f35623e7116ef6. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/EGA010541650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f43d16b8d2401ae33f56e378da69d8ed1fccd5f10dbf6a72cc6261be2e69dc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/EGA010541651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbc30c0a205361ce24ccac94a29ad1685ca0f7befe64cb7234355609703c97e. 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/EGA010541584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6ddf3495f09b85a6560d294cc8fccde2d0a00c8585d0eface3872166a3a08e. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/EGA010541701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd1dd8b3e0d218c4d472bfdfb8204f11d955496e189c9c3caf65e197b2d5d23. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/EGA010533597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa315734de112a3b11f93cf817fcf8f89e1df9b8aaab7aeb079436e88b6d8948. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/EGA010533599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5222f55db3a5afede62a9643822132e28a04aa7601c8bdeb95cb3cabd9d877e2. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/EGA010541612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1a12b1a4016561a78c7260d73f4566e1eeaa4a3789991287ca33386122936c. 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/EGA010533598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2948445ffbb47e90bb5993adf3080dcb6f21f9d9f31457d5a913449ac5335b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/EGA010541513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4b31049c05e73326b43fe945e39fe2d2ca4e3a8d1d564b45ce513dfe8ec8a4. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/EGA010533760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3962b13486d2b7a784774791e7d7653e2084e787dd97284f7c0dcd82db4dec31. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/EGA010541396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70bdcccbc5242cad49456a50184647bbfa5c52a33ee891cc3dacf426ad48aa9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/EGA010533762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfb6057ef5d23c10a472836a19d965aef78d7dd4bca2e829fcdbabad8dd2c57. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/EGA010541590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcc5214933a2777c5d5cd71f2ea0a037ec0b8cbdb4278878cd6c1daaee28aaa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/EGA010541514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7612017cbd4231b2d1c6da119c1ff661d4fc8c21c0f60cfbf47f06f8178cb8a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/EGA010533758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf139059d44e6408a04d19dd6a3895dfdb2f1969e2e780916ae046ce82fbf010. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:00:53Z), 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/EGA010541518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44704465f0e84b1a5e231b55f074abe5dffccab1c6986e5aa10a354a04e0b42. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/EGA010541522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5f91b51b771f1703ed29f357ea3407f604184a0b996603e56b79061a1ae551. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/EGA010541523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b52b462aa6da63cf989a57175a9cd53b4d4180ff10d811dc39edc1245297c3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/EGA010541524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe969f8cd7d401e99a585a06c6682d1b06fe75c45e02d3c859b6644d2db92f395. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:40:42Z), 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/QM6N22234752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c519703fc04ce297e8f6bd8f543acaf54fdf593d147aa2a8775395de4a48eb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMDA72360758.