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 0x20c325b5f864e15ae8ff8beee68efd2e5d299d26c11bce3ed23bc46d6fc7a756. 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/50f204d4-011f-4dc3-9ea8-625d0ee63c8d.json and https://artists.proofprofile.net/proofs/artist/50f204d4-011f-4dc3-9ea8-625d0ee63c8d.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 0xc2be58a375cf5b2a198d2f15d8015605803700775d2020e08d2b9aef829183e3. 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/USWEX2000157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127af8b14debaa333a7a013abf05064647c594c577606515cfeeffe30786bba8. 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/USWEX2000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117e9a73f9ffa6dea44baafe6f911a40100b0a4f6acf1a4703a6f726823be53d. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USA2B2104895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe178c0839589d512ce057affd6f122caf0fc9b79e2c0f1c1c6dd7159d228e206. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USA2B2104896.
Jacket - Brother Michael's Downstairs at Eric's Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7481ea6d604cbab90dc0cd0f2cbc090e5d66d54845db44c920402f995a0af641. 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/USA2B2104897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd2463685ec1bfdc7dbb993b1ef48f0a80be11bfee41614251767b29ffea419. 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/USA2B2104898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafb8dd82421f3f608a19f624011df4e4509d81c40486c7c4a1fce12d2b1f090. 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/USA2B2104900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9ae1c792d00832ccf9651e02be4face68d9bd27b2673df5a9567ca5ae6dac7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USWEX2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b155e32f4f6fec2de0ff6c29c388d91bec30aca12e60a6f8e3aaa6f19c129c. 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/USWEX2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e2db2567447de6a937b7e2d3dbd4d20d74efb27265b45d96c4f35c4f57fbc1. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USWEX2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43bbc6baa7b2a6c4a78512096566b8db245c69d8f4ef49942f12ab3afac29cb. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USWEX2400028.
Boys (MGMT Remix) / Wizard Acid (GIFT Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b23a083660a55dbd84689bd07b6c7e68d422b4d6fd6ff06d837f90bb4e95e51. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USWEX2400044.
The Kanks (This is Lorelei Remix) / Be the Worm (Disq Remix)
Antimatter Kid (Love Injection Remix) / Ketamine Hot Tub (lovetempo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0706b23dfb5b728e60320d007dabe47cd1094a2096c706311cb29d11a222d54. 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/USWEX2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77167d54081734f6d1b5ca16eb52ed88cc00c38e7f44dc865fab8ea854f32be. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/USWEX2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6406f76b42c5dad525e596c905bb31da1d337c3b39304d382e04ebfa14f19. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/US4HB2200629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6406f76b42c5dad525e596c905bb31da1d337c3b39304d382e04ebfa14f19. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US4HB2200629.
Pinkhouse Secret Rave - Psymon Spine Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645e418c5bf2dfd55da1a7f9380d8f7e8da6676082aac6369780db7387f904db. 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/USA2B2316092.
Life is an Experiment - Cosmic Toothbrush Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894a9a4f6dabb7175697c338164a9f79344d6832a8a63bbac51f6264c9d68931. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CA0WS2315716.
Staying at Home - Psymon Spine Prix Fixe Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe74984c63c096c5de84b067b0484bef07d22b5ae03859f9ca465d4dabdf1d84. 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/AUXN22510228.