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 0x2211d0d3f74ad1fafa1854ed09e8df068f49e47f9921f2a534442d2b6619dce1. 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/12dbf0ef-e3ac-4ed5-9e37-00f5a74b14e7.json and https://artists.proofprofile.net/proofs/artist/12dbf0ef-e3ac-4ed5-9e37-00f5a74b14e7.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 0x5c3ac8ecc24ef46c697b74523bfd5448dab1acc877ad942d0f55c4b39a3b76aa. 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/DETO41546151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636d856e233b17b47ad0ebd7e694df8f367006efd53aad09920c294d94956946. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR59R1685479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f6ef8b349e65d15ab83e7fe20351afc99ab37c2901e4a4d763277a50152c00. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR59R1685481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27cf97961e0018e2b9f1967ac8f6d8608c9996f366a3a194e68e7765a01547b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FR59R1685482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72014f1b4bb7f6ed36bd47087901890501be78cb5f2ce9fe132614d4747ea409. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR59R1666054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31065150df23be196b7bb9116a4561b9b8c8646601ed0f870ef732b4d94819bb. 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/FR59R1666062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b839172f8137c5a3b62042998c7061633aed884328fe5182bb2a17c235a8f39. 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/FR2X41716317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596b541f86af1ffdef3b7c3f32a9e1be388ea41f563befa93047c836aaba51b7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR59R2020750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5468161a3d9bbe9b211358d7be0c7d173864b08a660b15a5cdb85d423cb67aeb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FR59R2020751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec87ba440017be205519a85f32c54d592ad1e6fb0d6b940c0f80c0040b383c5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DGA082288279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7027aad17a7ef851a8e0991fb7681dcfe30af26c79a30f269c0edc64f0dea685. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIG2433945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1804976ac1ea37250057db1c0458cfe52a2d2f74b6e0ca8ad6e600848a15fdf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAIG2433995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f446101086d4ac71f8d8369eaae7587cd029b1df3e26eebda1548bdd12ecff4. 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/TCAIG2434003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cb5c8aade23b5226b7872855934dafbcb30186f3f5a4955f1cbb8e2db54db9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:50Z), 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/TCAIH2434014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3490a84051ba5fa18f85df08c89953c82b97780101b26b4f90f213899190de91. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAIG2434064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e8271e8cb3e7fc3a04f3bd53303c9aaf198a8148517371935bcaeddbf6e8d2. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZNFJ2304598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c144d82659e0d5b43393b94654762d470e159b4a6687dec825d2f8fe4b13b1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNFJ2305522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ff06acb6996cf81eeffa7e920ef2af646dcbdcef17806118a4cd864b458c69. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNFJ2305214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdec03d4fc689a54eb0bd0f334a23c0fc49f9198c16cb63c782ecf76802f85ce. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZNFJ2304609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6ad36acf617d1c119d1c9c3da13823b847e3464e36e75ea4c5ed8db0728ea4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEUD42560881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e3f4134602afeb20eee8da0af8173c8a6ff17e21207cb5a0a418a295eb8521. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FRX282597768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ace368e42f3ecb0d1548ec72b40fa9090f88063bfe3ea1956e62e70cbb1e1b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX282597769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122602b5b3c2d9efee38e5eee8b91471c5b464ce847f0bbad9f10b42d3227f86. 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/FRX282597770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c5c60ff4d8fe6abc361dc13be16bfce7152f746923a45db3fa8c3cf0977c4f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRX282597771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc6f9032eaaa0d0e8d96d8e67d16190a2139e374dd382da2b3632bd958c91bc. 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/FRX282597774.