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 0xe350e07b2bd716b0c4b0f530cd631347fed7487ffdd9950bf7c3ac13fa1cc2be. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8600ec02-dc07-41c0-b169-5022e2a74722.json and https://artists.proofprofile.net/proofs/artist/8600ec02-dc07-41c0-b169-5022e2a74722.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 0xff50b0a2c9c85046c318e619356ded16111961317233732c87893c9067e0fc79. 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/TCAFX2173303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac45c02c543a257b338c97af6258a85755a4e6972206f7c96e399086a81cb46. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFJ2189701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae94ad713bd50fce69eb9bf8e73041b903a7bdad9f35cb2207714733e70d7a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NOAJR2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c4967c57029777aa9e8dbc954b6d9a7cd385a2e8ceeec3b23f0c33aeecd316. 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/TCAGU2335233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c49d4b866b13df6ddb19af6eabd60ed2642f4c96c1cd5302cc7f899615439d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAGO2257828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0484d855d3546ef46bf06c2ea4012f949cfa68fad9401742c7dec564a91be6ea. 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/TCAGK2255684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09751459bf3ba5928f53851a2bebfc9d740d8afefef00083e736cb54a24d1668. 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/TCAGF2207982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3f9e30f593c688cd7837af2a7f4fc0b18fcf957ac091a7befd42ced8e92d18. 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/TCAGD2224146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533b4a64388608a40355d9351b1d1d643723f579ffa10ad9a5ac9a44abcd732d. 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/TCAFZ2253487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f91c3ca2d694df2cd3d5b2ee95c243b387e30f32c78a6f568a0ab789628e703. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFW2157396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d128b877e0e0fd4b33389a2b2b0c0ea4a5d1944be5d57c0d3aed1b7f5b6cc4. 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/TCAFU2170878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7f528bb708b71fd8718ec2c6a45b1d11bfc43f2433d7b25a4c690f71060c4d. 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/TCAFP2192551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0816b469db88a162e2b1667c7ba31462ca78863b014953982974ef59b9b0c4d. 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/TCAFO2171131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fae3af02a4d0b9b05e4d6d73082b769034cb08cb5379cf39efc635cd2648814. 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/TCAFO2125645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca4a07276c776a6e22eca480cf100c5ad6f83e2ca4144bd82bfc7b9e80137b. 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/TCAEZ2070397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcfc199f2743fb1b2b085840c8ae4f32962338fa21b4f296983a0494b3d3198. 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/TCAEY2008130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b41a6132f222b116358ee37f134b90c96d9fc443cd1694f42c27c84ac6f26. 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/TCAEU2066391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb75a0b70a1b0d8467e9201b06181b1521388ef9cd485c6a5dcf2523217db343. 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/TCAES2096833.