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 0x751204fe8389a7808304d8425949f24486f8766305e543c96340c08f2c3dce08. 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/cbd9b135-a3a5-4c05-aeda-bac534b90d4d.json and https://artists.proofprofile.net/proofs/artist/cbd9b135-a3a5-4c05-aeda-bac534b90d4d.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 0xa5a20f06c801ba1d8ef4f48b05dbd2d3a5d9d9b334ec8e67646a17893bdb412c. 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/DEU671701326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced7ca6a206b62c755906f0e77fbaf41ceace6bfe2a7ba4a284ecc33ca14db54. 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/DEU671701327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0556ba72ed0e9d45c24e794025188658d4cc6678fa48ea32d03d69a85bb071. 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/DEU671701328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af2e6cca0e058402c7cf6a6c367d161b5dde937fcf425dee48565c5ca4115be. 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/DEU671701332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7297b6ebaa40e19e10705a1453e75f9e8e5faf7621517097845c56d785abf7. 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/DEAE60200246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d3f0e7b86add468952f01aa2674fdcc9f2d6423aa960279596f4c40de9f0b5. 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/DEAE60300378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d4d9c3dc06d16912c48d7ba34acd0830c7ddbf0143565d29f4f7abbad981c2. 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/DEAE61000936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f65fb6ce7c64b84a6cdb4a0158105c92e3bbfc43c64d5c77e66b9de755b67a8. 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/DEAE61000937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce478615c5af5ddc7a39128dff7c1b1bf708fbf144a9f75959b33289226d8904. 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/DEAE61000939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5685f253bdf62682f4bf1f103c6f2a96dff2d0ef2b5275a2c6ab3c77afd70002. 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/DEAE60800704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8339160a097bbc99c542a9217a3adcbd213c109d889d4ba4ce41738495a98799. 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/DEAE60800705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb085aafdae77b7a643b49b7715c0b05dcc0735e47d90a2a58f3f11ac607eee57. 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/DEAE60800706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8068882f8b3797fa3b9d21175ffe7d656c806c0fb33cbd660d0af6fd133296. 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/DEAE60800700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4366f18dc101d18b0620b894555728f7a62208ebaa68f07a668c4a7b78e410b. 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/DEAE60800709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c562ec21169f0d8db7e71d2926ee1eb38479bc984656f6a1a81f7e0e920895. 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/DEVY92400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a02a9b3e6c181a7ede130d3b4e7e0115bd63c92fd9a766aa64fd94bcb43b15e. 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/DEG932303573.
Not Your Man (All We Are vs. Sascha Funke Remix)
End of World Party (Sascha Funke Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88fbb1f4dec9adfbfe2253ed090bfdb2be32283e934445c3dc038cddfdff561. 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/GBKQU1899883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9228b59b9f098235101338bd9fa31d4b87f835d983eb6aefb234207499735ce1. 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/GBKQU1899884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5624a057d0f9506571030762b5fcc6f0fa31886600795a27d93f760d541ad846. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEU671800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3e62214a35df58298f8bf010c64f8d36037e4f1abe3b00746fb96d30400ca4. 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/CAT391600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6c8a589f97d789a92580489675e4f1b4d2701321f3379461af2b8a4452d7d6. 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/CAT391600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e299aaf734655021722ff2997ac0ccf98c89d0e53361f0f55f5f5849e5f77b. 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/CAT391600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8eb5b8c815279005d9c36d893b81202323621fa1c953221924ffab869a08fc. 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/GBLV61629273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aec2a081351940665d15d6b4c4cdba9be8f68a577b27c8203b8800370d522bd. 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/DEAE60300329.
Mango Cookie - DJ Koze's Pink Moon Remix
Reincarnations - The remix chapter 2001 - 2009
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39afbdcde1e0631f21a9154a917dce096db7f749c43ccea29b16d5cfcd660b0. 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/DEBE70890091.