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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ea8bb93b3517a335bc748ba35d7d291fdb52f71d743ebf4d2aae1312ad2915. 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/89c9ae4d-aa4f-457b-b9d7-e2421c061536.json and https://artists.proofprofile.net/proofs/artist/89c9ae4d-aa4f-457b-b9d7-e2421c061536.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc262c33323cfe714c3ba0bdbf429dbcdfbfae89e2c4aa1c1c4c950bceaee1d90. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPJ1965739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebc109c4fe5b3794ebd7ce2c45e1b0d019996c4ded7ad674a32aadd1762dd37. 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/TCJPJ1965740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47666d30a2dc630faec10b9235f101ec3eace9b8c912f2a1bb0337709e3cda4. 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/TCJPJ1965741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a678c0db8f50c53189a5bcfb5dbcf9be06f90cafadb3dae4f37966fafd749a2. 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/TCJPJ1965742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d37fd7bbfc1dccb801fd15e5907afae57a3a5c16589c9af355a437de5d12713. 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/TCJPJ1965743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8aba666b39d5425a50be99551d62ace9feeb6e81eadda24107c6a66d25cce3. 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/TCJPK2094390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1853a1e98cfb97c0e65014b87bae7fb277b387838a232f928bf1bbac2e8c8077. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TCJPK2094396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8afc6ad3fbaad3f782750291d9e65079df6c9ff8aa9286184fc5b938e25b1ed. 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/TCJPK2094402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883e3a51f4dbd3163e3110d29d6984bca9cfaeb38214c76bdbed6152fbd7bb44. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/TCJPK2094465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f041f60eec2ff3626418cd8f73a8c0b9a45385049b32557fc1a866a312c4e5. 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/TCJPK2094466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6a00137f488680522fb2e7bd2717a0179678f1f76ee504379107c606309d83. 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/TCJPK2094467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61626825f36f64c56479070bfb45aea6a9e064ab627fa99ec685ca652d3336f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPK2094475.
Arcaea Sound Collection: Memories of Wrath
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3572915082771e171a325595310251fea721f25580b75bc66eab0acd7c353b99. 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/TCAGF2286609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214c51c2904cc017c949fff3ea3ac7276294036ae431e5a5e273f4c4cbb24466. 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/TCJPY2310753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f68fdd46e3e84f1093f40fda9ffb01231b75eecb06e7cf0760293a5a90195e. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZMHM2331884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1b0c850d3923b5ec6d22123755f31c9fa1654b18f0a1eb0a389f618e87b88e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPI1983140.
Arcaea Sound Collection: Memories of Conflict
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd65cde6d04298aaf318883179bfaa2a61e746b52df3af0724854474d857a4ca. 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/TCAER2055622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c084d9662e38a09824770d9c1991b093d11c6038623d1ff42c8d4dfeb426b5f. 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/TCAER2055637.
Grievous Lady -nothing is but what is not-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea4d8983786cb397a6e6d356debd3064b01ebbad088d9ae1e4537aeede9a5d0. 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/TCAER2055649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fa62b9b05cd4c2167a29cc4300d70789d06322d311dbee5e2885f81b308b6d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP1518368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5486c8b35fae61745e53ff13df15f6468945e324ac751116a26c9628489a8c8. 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/GBLFP1520672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd219552c14e3f5ef153c05bc89086b36c74f565588415c1491306c915491126. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/TCJPJ1965724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7128b2613e3db1cf19de3f87f690e810951eabf7735d77553af5d8dcad0cfec8. 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/TCJPJ1965736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbab72eeabc5d9728ae24f23a17c3eb29afa055d8c0e80db1aa20988c076a226. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPJ1965738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa512102b511555a7303d2f40d385da3b70df1430b6a47bff1d24a155c37c251. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCJPJ1986467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb13d6873fd9131ef30e3faad557ead9db826b147e63d32bdd1a3636492ad0d4. 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/TCJPJ1986469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94c586f352d5c46eb9df462b44958ba43da95de6a93cd045acd87416a21cd7a. 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/TCJPJ1986471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927ac55f738b35db6643de5938c59ab1e5fe11ae923f0042c3397116f1a9ec60. 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/TCJPJ1986472.
Hardcore Heart Sutra (feat. Dj Grimoire)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8587dc0f43f95b55d7cd9d18c5da5ccf2e3516cb0b24bd9e6de2f7ef85e0d5f. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCJPJ1986475.