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 0xdd19176fd43a842739b88b0634758e243ec8692ec99364ac15f81545504c2c13. 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/14c0e223-3166-4d4e-b0dd-d8b789f86145.json and https://artists.proofprofile.net/proofs/artist/14c0e223-3166-4d4e-b0dd-d8b789f86145.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 0x08369e6d93f44b4d89a6fd0885856d28617bf2513c983ca12418e0b4dceb519f. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/SE6XY2289961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b88d40def8523ac2c1bb00ccd3e8cee328f99f481587acc8af2a8dfd6fdcbd. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/SE5BU2030629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651bbda47f7696119e9092f34dd0cbd6fe4a6d24b2088581279d7ccfda0c1f01. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE5BU2030515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8ad2fd2b89c489b600f3ef55818ede3c81d634c5f054d8f92e9fa1e474efc0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SE5BU2030514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca014bc95b01f5d512ad1218321848601a177b1bdfcd7f6b19ec0215422975a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:56Z), 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/QZGWW2079399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3f623cf1a0f0f69b20604fde0135c262b52e976435a435557ed5ea79e26aae. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:50:38Z), 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/SE5BU2139750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5624887d9b73b2d93757eec51f0cf0face53d36dddeda57d54414dc36b460b81. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:51:44Z), 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/QZGWW1917197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8919c0d40f6c3dd1af09f7bd765c48941088ad87b5e015b1d2f74a76edc9a0a4. 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/SE6XW2100222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc556974628d5f79e28f1c9d4fa6ab34d920056bae26903288c7fa7daf154fd76. 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/SE5BU2139743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e5807a59922bdf48f4d27264fe601f6f2724e684b1bb5a282781377280fc35. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:00:03Z), 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/SE5BU2030520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaae2f46d3f917db978ef1e2a9b11ad2887b3b40f8258fb3390580517dae7c11. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE5BU2030439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1c99b95847d5e617283af4d88ec23f06ec0843931cb54a8d9f64720dd6bc2b. 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/SE5BU2030641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7fc6584e4e3df30e88f7d9ed3950a159fad922c41d629e18aae1b7efb02eb8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:20Z), 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/SE6I32115071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa504645f227c41ac3ca3b945fe81e15615df091cd91b262bef410b30cdfe9bd4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE6TI2385221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3bdb30146915f05e2ea710a41fbb88cd1baffecb1a3d0963ee8733b81568bb. 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/SE6SA2035241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0445e5b7dfb3577459ac9d043f565a09db5b167316deea192f6033fbc003f355. 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/QZGWW2079403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bc2f88e197f8f17c4d4971bae46022d5c49245d23bdcc1fad6f7d7ce7e0857. 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/QZGWW1917188.