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 0x0bb4eb2a1a937c3064bd57358b8ecbf42dad205c64c49d7bdbf8cce858eb8990. 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/4f70cdaa-d0ee-4dc7-ac1b-5a8ce036baea.json and https://artists.proofprofile.net/proofs/artist/4f70cdaa-d0ee-4dc7-ac1b-5a8ce036baea.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 0x235b489a7c716c81b4c1af7973574e69718eb314aa03b79163bdb78fff69231d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GXBDS2410307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fce6c228dca37fa64d78a3ff173e07517d7200d9ffc2403e0f6329a8964000c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GX5MY2454896.
Breaking Through the Night Part 2 (Nightcore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c964d0eb119e4fbc497fec65cc2f4ea021261ce309ce9554c5433c0a05ff63. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GX5MY2415584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa8807daac12880104bc73ba69c687f257edb3ca63e583b8490e0e1f4aa9fa8. 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/GXESV2433934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b7a6af6133cc40f6aa9595aedee6ff07aba3e21d55ee7a602d573af95b1d76. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GXF972497419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d58231e4703ffc16c7f9c8489e0cb14ed3d22536c600db946ce4ed2df59557f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GXF972459611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b23d853edc2ee8094b5da844fa0877e728591c6be7335b41c44736b7933f69. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GXFHP2481936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416416f85e1017bdfa795fb091eff312ea3c8c8d11da159317b4c32c383f2e9b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/GX89G2577834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaec2114b6f5c142b7824557b5d53a0b19755f17b330f8f7482820529bccc45. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GX89G2537932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c3f619380081ba5b995da0063874315df4a2665f9c8ef56160acd2990c4a05. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX89G2599443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0bfa20901116ba7fe4fa5ac7b5e1743e643ce081dd3d967a3ca696c8455c62. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX89G2512208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82461a55f0931a26d34cac3e64762fec988941ac587b8e385b4cffc8a093a29. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GX89G2583057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3eb90a1dd6f3a499a7efc74902cd701ae258938d9fe66974e16ea59b268f9e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX89G2518774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d3b617e099e7ff4bbe72ec1088c48d78d169c8a68372ab39aeb56f80e5243a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX89G2555620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27c7d6a562ec6046613210010755918d26e024c5a7777eb0b068e36af854c94. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX8LD2530351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ace5eb53502b98b787076708ffab7b8f90df148ceb6571b8320f34eacd1479b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX8LD2513668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad332dbc2a51b78f517b8913677747b2d05cbe63adc80ebc93451275e18e5fc6. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GX3HH2510304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499b6bbe54a1e2dfd7c541859808d47da4143a42bb60748e722ba801932c9704. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/GX4R52516785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc168edd440bb338e5f3c24b3cd4a04f25449c767d0ec55d7042abb56d3fa27. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GX5MX2596721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00364de0f96e95b0fc6eaba985e8a721255dadc95d387e161837d78f3649e908. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CBEYJ2524697.