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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ba14ca0a5ead7128e07c21a9f86ccb304bd8d8234dc94f31666be97b13d818. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad759890-4c5c-47f7-a33a-bbcc5d70060d.json and https://artists.proofprofile.net/proofs/artist/ad759890-4c5c-47f7-a33a-bbcc5d70060d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7321fa7f144ece85247bd33ffaef94753fcf7251c1d2030cce2580dfe4c52eec. 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/KRA252101074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb25bcce6fa496492f5b28f866b0609f0c596088202107c5098b2c83f042f3bb. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T16:06:26Z), 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/KRA252101075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cea1e18454226f332b239512ba53a80772d06fa9db3c6eaf2394f3039714573. 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/KRA252101077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc927a8dd0b00ec7058eeb2a3526ff6ce7ef0865ba6c07d220dabd04d95678fb9. 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/KRA252101078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35894f80d0f30a806df611bfd78d76d9cc00cee77457f86d1deb8292eefbcef0. 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/KRA252101079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccd4574bd8d96cc0535a5e1aec6ac0762d7058bd67e36d04ae86908f1fd7806. 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/KRA252101081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9943fcd031951a238abbe5f56fe1d221108d2df781960b8d20627d50c8cb4fcc. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/KRA252101076.
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 0xec5f89f4f35765097b0f0fe3c16611fe5f13a38f12de3500e841263496004b59. 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/KRA252101080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6747e4647538aec2631b0cdcade691a30fc98c50f2226af4637c55bfb83ab41. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/KRA252101082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e601a184ddbbf56ec3fc36c72abc389b2d23637f70d3f2fd1cb8f96f782dbc. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/KRA252101083.
Explicit Content (DOPPELGÄNGEM remix) (feat. JUSTHIS, ILLINIT, DON MALIK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9627c87803c357a04889307d13450c25ce61dfb15701a802d9d05e3eb82c814. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KSB012308638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6641c7fa8029ad2402ac8826c12c9273d5a326770f5b90a2ebc72a7070ad06. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:48:35Z), 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/KSB012308655.
Wayne Remix (feat. G2, Huckleberry P & P-type)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff9196a446b8df4e24adfac32bc66b0340d930da5e5d9a3869c07a72d858d4c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRC392100007.
Never Better (feat. P-Type, Jambino, DON MALIK, JUSTHIS & P-Type)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dd3b9bc1dabd3eaa4b2a2bf31d4a04fa42f9f2c54f6a09471b5da54f8d568b. 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/QZF452001637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f7101f33b4dc2e52471f9e76bbf523c7dbbd1a298fefe93a3fa9e6b6e318ef. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/KRA381210425.