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 0x609ebc9311fcbcea9ef8e0515f0da6b573cb0e2c06b5e745f99f1941ab0a1ebe. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fd858c9-27f1-4ba7-b604-cc5d7eca2812.json and https://artists.proofprofile.net/proofs/artist/5fd858c9-27f1-4ba7-b604-cc5d7eca2812.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 0x9dfae36a18ceb0366c5bfaf7cedba8e9197e62019939956f65ba7b504d8d859e. 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/USUG12205485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bc9df48753e82d10b831f58f59f37668a4a64e63f455810a572e5b37df8239. 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/USUM72211307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd917f028073cffa75bde7a2c867392e7d72d0b2f21460aab3f938caa1ba4ceb0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USUM72207921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eebfad745302bbf5b8f917131af91c7407316d3b18068884c7b9fed9950e1fc. 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/USUM72207524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d878afa007f84d8a8eedce9531d1118940a4fad86da733767cf0bda5c4e84a. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/USUM72204688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb03e0713f404d26ec768fe3e7ed8bbc531605ca8d188497300927c91acdf600. 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/GBAYE1901224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a7d5041a05c9a3be7e0131f40a3b246169551a39566bc1cbee6fc44051edf7. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/GBAYE1901225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3c2c3318b0b02ae9cf5f9dd4adae8bf6cde277d901ccba68ee34709a13dfcf. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBAYE1901226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c94c61d25d60eeca668417b009d94b2e78a6531f19a8b53d5d3f787477f210. 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/GBAYE1901227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfae36a18ceb0366c5bfaf7cedba8e9197e62019939956f65ba7b504d8d859e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12205485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3445dde46339269dd756676cf2f529256e580a2ca6861faa9d8a954abd43a0f0. 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/GB7TP1700129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9db8a02ed1505f1ddaea71493da6368922c1941003d23e4c4bb8b35969df66. 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/USUG12207823.
Colors (feat. Eyelar) - Sunset City Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e3a01cf524136fc9eaf0252670c819d1dcc9c89941110f68bf704ddd29b1b3. 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/USUG12207826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfae36a18ceb0366c5bfaf7cedba8e9197e62019939956f65ba7b504d8d859e. 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/USUG12205485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63d57fd31cb9766f71f2d24e8ea2efcaeff8b9afce758c231a14c160664ded2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUG12207728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfae36a18ceb0366c5bfaf7cedba8e9197e62019939956f65ba7b504d8d859e. 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/USUG12205485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16792888feec2b5571e812d2af3b4a96870c3bf9b79d4e2092de2e329a33efab. 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/USUG12207824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65e7a11fd158b29287e0b123bff5799d859860532dbe1d66244a148df136561. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USUG12207729.
Colors (feat. Eyelar) - helloworld Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8379295c40f2b73ea036136fd0e12a043c13cfc18141e476810d949feb2bf8d5. 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/USUG12207727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb3c191bd971456be4d1b07d1e597a3f57dda62bd485367d9bc47f76dc53263. 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/USUG12207726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfae36a18ceb0366c5bfaf7cedba8e9197e62019939956f65ba7b504d8d859e. 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/USUG12205485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f92dff4b0f1693f9e19d46f451994f71ea7968df38dceae0d59ff3160f5ebe. 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/GBAYE1900800.
Dopamine (feat. Eyelar) - John Summit Remix Edit
Dopamine (feat. Eyelar) [John Summit Remix Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc580d1a301e9e60ed247f9605d035c4672505ff8d00e843b5d82f868cf9ac04. 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/AUDCB1701877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2909eb8bab981e54e5327f408b3d5df0c3e1d1a66e27ad1c2c693ed0bde77fd2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM72403762.