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 0x813be6a109a0d277a83c63b23386b48ec10be67c3384068139de969f5620c369. 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/e9774286-c07f-4187-833c-6d98388aa137.json and https://artists.proofprofile.net/proofs/artist/e9774286-c07f-4187-833c-6d98388aa137.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 0x11e09753df88185a72007d989c210b817d16ed86dcf654cfadd487de4fe24b2b. 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/FR2W02000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2b2d8421104a4919abf5a4de80d186fc5e30b0c2ed516b397c9b2c0a9741c5. 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/TCJPV2354226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4d68eabd3f7544522806cc4f7e8cedd3938ee9d0b0dc8b9f61efb1a57f777f. 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/JPS801834635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8016104f2d40408a4c1b33020e6900c2a8521ac6af429784123e12879c4fef. 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/JPP561101260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3051f1693698e8c24e36e8837a807ad28c2633876ba617628173ed66d3eaf16. 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/JPP561101127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8353b3d8000f5ffc3913f05934dd27e3ea9c620c9df73d843bc8d49d650fdcc. 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/JPP561100985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcef72efe316447042dfdb91795883017d0314498c36a2f2c1a81ecee4fe2da1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPS801837613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddce1415ab4b65c82f4774b3c2e5a00ab7313bc386ff3f840e0bef0977b822b. 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/TCJPV2391658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4571b678e33432d2b21c30f1a544dc4a880bfdae2f83da0fad76b921f97a0d5d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS801836280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf729e67fa69293be392c4a24cd903d876dad1532c3f4816e32d6ca64781d1095. 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/TCJPR2276074.
Arcaea Sound Collection: Memories of Light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eb872701eab5b2160f254c34a42fb8f0e2857a67c78d136b07324c6502f25b. 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/TCAER2055561.
Arcaea Sound Collection (Memories of Realms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e357ff2bdca8a14b8bd9beb700a6ea75b31e5968b0449ad82d9539dc32c3ed9. 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/TCAFM2172884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8637c189a80ce5ecc4ed5ef3ba9a3f9d6267790a90f0c7848eabb8b8a8d6cef. 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/TCJPR2263302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d13a4296255601b3f65caf3675af883dec6e20ef1abda31b7d9d3039329ecc. 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/TCJPO2176484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e853c79682760eb20f4d4ff7ead0619455ca6f4d91507fcf0b7cb64d3b748d5. 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/TCJPO2176494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e298ee8e5fd8dda52b6af8635bb598ed4595d34e3812bf0a580f64bb1c1b5b5. 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/TCJPO2176496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84950f98b8a4fccd57f34ecbaf633647fa3f6a23901d4b5f14837abfeb671d25. 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/TCJPQ2114873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166539eabf2b7acb166619f18a0eccd9a67558f50536dad6b23a18dd5d141f44. 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/TCJPQ2121743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a93b01d381c8317b336cd69e2a730d9a08c7d39dff5d0e118b40201fcd6e00c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZMHP2355446.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch