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 0x9153518049d511ccc645748215efdf4084a7fd3ece9114e66b23b1ae9a68b05a. 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/7cade82b-e931-4f79-97b8-38ce861ee94b.json and https://artists.proofprofile.net/proofs/artist/7cade82b-e931-4f79-97b8-38ce861ee94b.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 0x9a6fe071f435caaaf38cdb8b1de4e66d20651e114bbcaf7445d1ecdc17e2ca8d. 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/SE2VN1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75705c35d2dd890fe2b73a3299a3b6a9bda5b3c14fedbd650d2e2f8d18268b7d. 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/SE2VN1700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362d287f9ef0d385862b13511a5451111faedc1a1768d2f768a8fb00496a5703. 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/SE2VN1700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e6254b48f49f7d945437dff99f73479f41410c3d5d6443106ebc8c5b651071. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE2VN1700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a36aa050f415c397e5903df35e187c70c32b00de4c017ae278d5a2d67f21fd. 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/SE2VN1700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda81fdcad67bdfd4dff7c32142e0b557a7dc0702d5abb84890a209d2a5223a8. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:03:20Z), 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/SE2VN1400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf69cbeaa92d8e0eca0a51b022e37136b677a6d3e868c16ed75faad7cef9551. 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/SE2VN1400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa076424d245df0587fcf0acb3558798495aabfdaaab7ac53ac6dcedc9799f5. 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/SE2VN1400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ec6ea18e17ae6a0bd58b94ae82bdc90656bf7b1e44b12596d9099c294feec4. 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/SE2VN1400408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dec5180c3dd16e4c13150c1f3bea98ed2f617eb1417f86d8e0267e3e8e5adf. 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/SE2VN1400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a849fa4e3a6f937f1afdc8e83bcc76c3e51f650a2f19f22b6459b9dc6f5a80. 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/SE2VN1400410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637511ccb2ebb7350378060d322e3fa5248d8916eb49c84fa862e6bd3372c7bb. 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/SE2VN1400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe861265506f32a5d23014ff179d59a5d73035f96afcc7779deca97483b6a9569. 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/SE2VN1400414.
I Do It for You / I Don't Wanna Miss a Thing (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23633481fc07e561a0ae9714824c6c98a23414e353b836989578f4ee3df63924. 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/SE2VN1400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a1b15244293b1a7d206dd825a93bded8e76d1948e2a875d0bb6cfb1e143c2b. 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/SE2VN1400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc282e314be440ffdd3ecba736667c21e1c31670d46c7a6ae6994fe3bde1f77. 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/TCAFK2120115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda56540da9c66317a38e01d3f724ae9e67b7f72d74dd8eb3d7b17b31d8a92c5. 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/SE2VN2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd233ed65008533e60b4de0202572a725ec05b8519f0efa0cd2ab219043cbfd23. 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/SE2VN2000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78a365b368150a1ae5369460ac766c84340e8300f7d65d172cae660b47f4f3c. 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/SE2VN2000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46aa19677c946e054bb5de834ba3cdf3fa0ee00fd2cf53d459e60be631b1847. 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/SE2VN2000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4108da07ece418a0376b6128d4033b082e8a45debdfee77037f8269cebeffa53. 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/SE2VN2000205.