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 0x7aa118212e829308a41d12fa649c36c80dabcbd2c34415803b3d7fcff5cb2906. 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/3b154b5a-45e8-42cc-b823-247659e4fe17.json and https://artists.proofprofile.net/proofs/artist/3b154b5a-45e8-42cc-b823-247659e4fe17.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 0x8b0aa5023d0c1ea6c718f40ea28c53bb240eca034e1f0b3c04733a11f0acadbb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989607722514525d52e3aebcefb02b855561a82de388a96bb45b2129f926eaf1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66381eb28d26cbb5acae9b08100731ad57e36330456cf4e198b3a6cb51eb9aa8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ca13ce5171848c0bdebca9340b1a1bbea52ea593b8f4e00a0d1f334e5ea526. 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/PLUM72200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb621d3490cf97c8a3867febed3156656e6f2cb51be137fa45c5959d6576f51f. 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/PLUM72200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238cc9ccb5934fe6ea8a4f1d855055a9ce6f1ca487c02e361d8224cd606e760f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21b7661d8438f66f61d15bf9eb27b1218f258ff5e9bae300cd17615d56f3b50. 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/PLUM72200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e3718f306bd838e57187c6774a6b699c1ad3004f5f122709ac9df74b288b43. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe900654bd863d4e093aa5435fe9adc53c33bcf7e1de5ada977388da36bff2a7. 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/PLUM72200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a11a5c2f7fde1064d9c631ca4b108da1763df283c5c381df2b177f6e0cc62cb. 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/PLUM72200179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b9443396c22f478a57b377eacda2ed518802d5520b3c7c31d3193dea427ac9. 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/PLUM72200180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4903358bb1dc90d660e1f44be9ef1c00f89710fd877e5995050d20794b02f645. 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/PLUM72200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d0dce3c7f6287bda9c03a164064ad130fc135870d4254453ef04946b544b2a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3a6880d22cf9edd303162d2a57c0de4a7949af0b3b2b3a47c36d2ad71938d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4c1874d44d99a609256ef2f30d10f25782ea2bbad739f37cd1b68c4743bdb8. 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/PLUM72200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48c24d82706f8275d8fe252a185a362a12d6db2dd972821fb860e46ba1c7707. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2061a9f7553b162af3499baddd35c685768dabceab936f4f073190635cf946a2. 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/PLUM72200185.