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 0x94127b68dd6aa5069f673afeddcd67c43df4a2fa0580417e94b71cde75487fb3. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f76a808b-13bd-410c-8b33-5d1153ec7516.json and https://artists.proofprofile.net/proofs/artist/f76a808b-13bd-410c-8b33-5d1153ec7516.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 0xdfe07cb78927bbd32869a03e0ff810043927ca925fb8bfcb0375cc382526098c. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QMQ3X1800973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360f90e50f8cdc98034d70821cabd5e05f9c2195e32807ec9ea38783ae11b858. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMQ3X1800974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44766d12680d7d56747c368ef2e56a3162f12014f412631ad2ea614c67ccf181. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QMQ3X1800977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924e593d405db02cd90a710a3aec634e82a9b5b9cea5b69fa041f03b5373f898. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMQ3X1800978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fd4411ccd31821f730bbfcaf7006cdbd122d485daaae1754ce332f1f83fd61. 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/QMQ3X1800979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583b4e8040a8f7e6fb0e4bd4d97218cec6d39d0078975902c8902e459dd7271a. 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/QMQ3X1700607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62dbc240f79b69d20744f153ab97f3f6ecd2ef358be59ca0c3e0b5c532f3e3d. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QMQ3X1700608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b06a5021b041a284622ca0b578e41f846c93dee8c61db493906bd4156a238da. 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/QMQ3X1700609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a06a25074293e20cebd1f5b5eaad2c455d8442e0aa83cdb18e008348c19ae49. 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/QMQ3X1700610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4149e6ac7eb0fe1ccfcd6356902383ca231d1758a5d6b4625ba62a0c8c2b52. 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/QMQ3X1700612.
The Case For Christ (Songs Inspired By The Original Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef4c72ee736d51aebc66034ec524056c0c1e6d5f6854e57cfe4cef5dc585574. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMQ3X1700640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8784cfdf3e4bcb380aa969b38c2a8c08b3e7f08d0d5ec76e1424b0daa31d9fe0. 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/QMQ3X1700641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8047eae79bd305bdbbce74bf1359d13860488cf3d7c55fb5c570effbadef2c44. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMQ3X1700642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db8a7f962b1d4ddd2e4e9c17a72151ef0467994b600c35a496ea05f1a77403b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMQ3X1700643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3074b9412c40704d7388c665c1a1f424d5544348ac703f1db2ef5213caa6f7b0. 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/QMQ3X1700645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa73df3d031392fd77075622d773c8561b5e4becd76d14d71cef35c97142b67a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QMQ3X1700646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf84983f5344dae101c91058d0c820a19f825c3772ce3744da2d341800fd73b. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QMQ3X1700648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f27a9b64b21a86896fb7ff46f5d58254a5a7037f4bb4532c847097833e048d. 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/QMQ3X1700649.