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 0x9bfb2039fd457d0a068eb6fbefd5b0affe301815fef108881815abd13423e9b9. 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/6d8981d1-9c93-478e-b8b3-9f0764a8c3d6.json and https://artists.proofprofile.net/proofs/artist/6d8981d1-9c93-478e-b8b3-9f0764a8c3d6.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 0x83bfcfcd3914a56d9aa61c223fae5abfdef7f18d1af03f1f3ed28e7855dbcf4c. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BCML02100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724394f03e5c9b18711ce81bd042c27d87ade63c0d948a5e0e1e510bb2fe77e9. 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/BCML02200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62df1c5843069f12060c82e7aeb58b25d40ec90986750f900ded3fdeac2e3763. 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/BCML02200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0890ecd5c62e0333ead5f4351d69d7f658d28d00fa5bc616b522fcbf4a68e8. 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/BCML02100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e5e82530a66aa017a4c98f1f99041e2765c3eb7e54e8da0a376ea8660113ee. 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/BCML02100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0890ecd5c62e0333ead5f4351d69d7f658d28d00fa5bc616b522fcbf4a68e8. 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/BCML02100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d8fe66781210aaa346e9ed0c4f777fdd8bee57c6d834526096058dd0172fcb. 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/BCML02100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0687e91c7e5c0a94fca326525e0b96399f518abb8fa506d0f7919f52e9aac86f. 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/BCML02000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430217725e460a492bb33c0c12f9122f4d32936ec3f5cd820f66c5557b32eb05. 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/BCML02000059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc8752b918cc795686ee5c9685a83cff9988f04a79ef285007dda47739e0855. 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/BCML02000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35bf8bb209ffd4b4ca0f6ac8412b185d429b896c585fdcef61820eb3f220352f. 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/BCML02500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6dec533bf0aa83156feaaca0dd087aee4e2e605ec7175e5d5d3a59cb024ff1. 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/BCML02500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80cbb01fd378da0ffb91ec2b29bd07fe4fe752e7d20b843ebcd8a4d12720714. 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/BCML02400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf197d79e0a703af5d2ae6887db77c5366edaefef7d6fa4ea9a8e5305cfe5c0. 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/BCML02000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2bde663224db04a8e4be28ad376bffefcbbdc525f0052932191daa8cfca1de. 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/BCML02000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5093a7c73c0f8b8ecf44134d7f293d7433438e80fa85ef1c2ea9f7cb5cee17b3. 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/BXHP72400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0509b4779daf190d1f602439df70c3425eb8f8300c33187713e8e4108c78bf. 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/BXHP72400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dcc0f3be1cb7ca32938c2e22a1b0d1ea32983bee4a90dfe5890b1d69cc4455. 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/BCML02200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb3712b1ac3717d243f1718d6e6f70e399dab6a36d4c11b3247210e1b6a1b9d. 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/BCML02000048.