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 0x6b0ad64f70dd6c06490232fd32f00abdb84be629ae86db2141a123d073ec9764. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34e5e276-f838-4b06-a5c6-faeeef49456a.json and https://artists.proofprofile.net/proofs/artist/34e5e276-f838-4b06-a5c6-faeeef49456a.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 0x3bb3eafdf5fe20d12027bb6160987e6b4b8b5eca1d7211ff8e248b55579e32e9. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCADC1753656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c49ce69dd32a07befbf0b43a4c13e267cc642f21019074bcd6900e6094d063e. 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/USHM21824496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b44d7cfcbd266633f8e7c504d4de2cffa413aec9c994f8c78de3a33f2bbfda. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZFYX1998989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbe2d0b58831b13b5c22d52dbc04f92e8ab7e1c8a31b525b566fc5150cd9fb8. 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/QZFYW2008214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c632c7d8b734e4cc9b8692b91376ca48cf87dc3a30dc0ea2bf7d7e61af0da6a. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAFO2133232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e0002cf0365ae7273f34a0f8e2f2b95bf8092527a1dbae35ec63d2d7f2cb17. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USL4R2127290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fef6d29089b4376479f9431e189ceb13a826718a22022c51cfe5cc0315da90f. 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/USCGJ2209145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057da745ba6108b14ade8768db4e116e6ac25b3a26f974ce86d85122477e7cbd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ2265049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32cd8fbb29801bfe6d792931cde7a85c1d2abae5e9aa5a75c48791b2c03dbe1. 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/USDY42204892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe251b168eb54c92408b21596d47fdc8df4432ea3d67e0247559afe9536fb6983. 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/USDY42204893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9fa37ce4bff3025368cc0b9b47c38842763ac473a40694593a42bb7c551c55. 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/USL4R2211839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a8e6472d899c8ca1c217257a342534bac160f2d5eefbdc4a9cc6c09b28ba47. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAGW2308790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029dd7f37d2efd64e8faae32a2d77682debba20d2a52f80e91dd17f56811fb5d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAGW2308809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8985669374fb29631bdcb4cf57f3bafc8a37427974500d09adcb15a14d270e0d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAGW2308855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddca432c1990f3e1a3dd3fdd7b27f380c8271954dbf4529f0c155ee016c852f. 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/TCAIY2454159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186bf35c05ef09bb08aa338f7294c5a78206dee4ec7961a100626f0a8950c5a1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAIX2454361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6029a9f9b4466cbddbb9f92fcdb9a41ed6d6fef5838ad89d989b8a5a8c9ce337. 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/TCAJI2510238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa485fea1b154c0a75bc2c0ef748f5edd400529bafcd9a6e4707a9b0e6bad50a3. 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/QMGR32247320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526d5aecb3253ee3a47ff5c8c53e233d3988c20eff42e217e24a0c7af76c64e9. 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/QMBZ92271056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9aa83506f5aea403e0f13e4868da91d92a546b8506a9fd7cafd904a32202f. 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/QMDA62168963.