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 0xf11d5946c610a41a3c0fe34b52b493213c2cde348629bd1e697b2d6f90c9f006. 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/e16a4f11-99ce-4ad4-9d21-6063be9d20ac.json and https://artists.proofprofile.net/proofs/artist/e16a4f11-99ce-4ad4-9d21-6063be9d20ac.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 0x8378c0bb0e1c3bd8d32a8dfdedffe279b0eda283ff0264879837bc3a0465448c. 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/CALVP2075741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfb3c2a764ecf9ff74eb869ac99ab3e98ebb428a5c67e3ee96bf6e6baa62d56. 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/CALVP2075742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb818076c282b1e0bd3283233229948ccc635912a78bc214693b1791951f6ca3. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/CALVP2075744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5740cb7a5e90453005016f0a085ba200a5e2ac8af9265e56b52726e60583a6b8. 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/CALVP2075745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291b51b49f61d0bab6bb8d2def7c5a0351c724cfd73f445b258bad4574e3d1de. 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/CALVP2075746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5f1eb22e4487beec5f9d1d445efc95e8d26d95387c65695e813225f5e8b57f. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/CALVP2075748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b6a2af25d2382cb02cb4aacace59f3af1d1839261fc55f9d76b25dddf4c2ce. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/JPS801852931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f09a7f5509bcbd27ffd859115895b3cf0ea452e22856ce9c0673a580c20675. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/JPS801836281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d76d3b10cc0b8a56c84c87d144cf009e9374a122174db28ab2375faa0677027. 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/JPS801837603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbeefc5c7e5d68abf584fe8c15256ef0f32bf4adf5a0a8e85d6b4e6bac74ac0. 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/JPS809915859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2c356eeb601119f315f94599ff7a6390dda5a61ff7eec3eff4e5c9f54d3f62. 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/TCJPQ2167230.
Galactic Eliminator (feat. Matatabi Sound System & Srezcat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aee5de60cbd41a4d984ab069826946007c5f41fd065a7934e7140260f796a69. 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/TCJPQ2167245.
warning@sleeping (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d84cce8f38b6c39e23f1e62b4bb8f44be10ad0f96d71b2231fd9e37e383fe3. 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/TCJPA2421833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b0ce529f2989d70f641aa98647ea3f419e65e7e6b344ca329c8da1289079e1. 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/TCJPA2421837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288c9c62b2bd27fe68dfb9ae0c1afa5104e747213dbe421bc37150c7464fdcc7. 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/TCJPA2421846.
Hype Invader (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2201e6cb5d4c948043e80a55fa4e0f6edd8a6c38dd17fa1f0ceae86cef8ed165. 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/TCJPA2421851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e4c39e746345e47ace36c0723d7ac35611b0c6e8c75f60f330064ef5597729. 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/TCJPA2421855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ed46ca80d18585aa41b98b45242babe550d7f2ec4e8c001fe4c5fa41341893. 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/TCJPA2421857.
Emergence Failure (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f26291af6a0c077daa866d9ea95f4671b1a2512b020f290096bda828baac4ae. 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/TCJPA2421865.
fun TIME (feat. Matatabi Sound System, DJ NECOJITA, Shinonome Interface & blaxervant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1f6fe26acc700e365a2267aadc846b2a148ef7aed4a22fa163fc4d00d50683. 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/TCJPZ2497103.