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 0xe440b943814048dbdfcfb3508a9aa2df23ccb0f1c1932da24ead1dc3e9bf8c27. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a66d310-301d-4de1-b0a7-cb85e117b44d.json and https://artists.proofprofile.net/proofs/artist/4a66d310-301d-4de1-b0a7-cb85e117b44d.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 0x231d1c152a45f1cafffa21c64eff85417961006b19c875266dbba92a4e695187. 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/FITCR2004118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6e0d1fc18048bae24b0b5fa5ea42522ce613e97cf026ed81b50eb619242da9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FITXD2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164cadf8ffe56c73a1b9f01b95e45b093aa63fc64a85c0ab7ddb883c5fe21794. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FITXD2300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5be951ea2985f4a601ac6dbb2714606d5411b1fc28ed7fbef71dfe4f7714475. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FITXD2300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b466bb313b48ae2e3d97dc7d23ec8c2e9f05314fb8fef7dc99a6773b961445. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FITXD2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695bd74fcfc999249d90dd32c7baea0e01136decf1dacc20107e69b312a1d92f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FITXD2300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16eac3326cf6820f67e830c685897e6a899dcb36e36baaa8997e686c5bebbc51. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FITXD2300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad514e26a596da427157ea467236e9e310a284daa7b3880895cf59cb73409489. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FITXD2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e1242e650d42db9be73a1213892455620774701b394976c8072185761d80a0. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FITCR2004181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5b906de82bbe65812115fece7d9fbcc4d5eb017e30bfb4324e7a06a97080e8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FITXD2500478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c7e858aed13666f1fa94b0beb0b30bc3227b4f2733771aa6ed78e0af1aab18. 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/FITCR1804350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe882777fc018fd1117d2bb90af55a2170aabb558b9f11855d8e2962ee8a0e977. 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/FITCR1804352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848bdb251396e0e4c3729d0e46eb1112ac50a94ef9fcebc1e473e7724ec6bc2f. 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/FITCR1804354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628454da00894510ad2cf00db18f20c757be57bb49a3bd68c55a0689671379f3. 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/FITCR1804355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd65c2b09e0a7b49b0621a9192b0a0f0e622e11fdbe58ac78fd64c4bf6b76344. 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/FITCR1804357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6410d94f502813690ccfc4cc203b7a95ddca0307123c0ba31c30a504a2f08f. 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/FITCR1804358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e345313f0a12f0a66839c7aa91fdc9e6cfb22b9f78d456ea128adf1cddb034e. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FITCR1804351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb8c88422223ac3f3999cffdd72d13cba3c37d2e975921afec6e050415fac2a. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/FITCR1804359.