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 0xa6b6393e059e8fa0fcce0637d4c51ea74886e5521617e25c58b082ab081ecc00. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3705ecb3-f1a1-4f2e-a33a-fde914535f28.json and https://artists.proofprofile.net/proofs/artist/3705ecb3-f1a1-4f2e-a33a-fde914535f28.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 0x6024376fb92bf492ff2d66efe1e8f425370b5f48edee099f8cb7297814e7e8d6. 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/TCABS1371372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30da33abb61405c0c2bcdf17cfc916c60a7e67053d80fd2581d9b181e41306a. 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/TCABS1371375.
Mindflay (feat. Brian Wade & Josh Clark)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc818df26504d54f5256ee53f161b267f7ab16ab76806f4ea9debcb73b3c901. 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/TCABS1371377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431764d678f962f0828ad2429d5d4e0af1db0cc8920965acd9f327fc78f16c23. 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/TCABS1371378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327e1140be79787704c6ccd217bdd5fe6614c61ae64782b20bd8b7dff73e009a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCABS1371380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f8d59fd4e77e10a9ed4b7359fe5cf8ea98d3e5fd874e8ada16ec6dd5202ba0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCABS1371382.
Arcane Academic (feat. Gabriel Riccio, Travis Orbin & Justin Gosnell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79341e2fef8d33417f59dc5efa8aec6f1eb233e9c3f3dede028d79e9685157c2. 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/TCABS1371383.
Escape (feat. Patrick Purves I.V. & Royal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac0f0382bab081d0b7f74b2e20fb8746f298bf8da0dc59d80cf9ac5c894ef37. 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/TCABS1371384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfeaf0e97a35668d8c7d2dbae2129c01059d4d5d10157d7ce6c1f21d5e1c44c5. 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/TCABS1371386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dca2e19080c4849f2070d8b75cdfb371c314f4804f374236fc5b45fb1e2988. 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/TCABS1371388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91f3bb5269ddcbb4e488953991552c084c3b51eeada26d843e3b8bc60594ffb. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/TCABS1371385.
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
The Singularity - Cosmists II (feat. Kento Watanabe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd453d9d3937368d5053b552566a0d6167feef023e4728e995b485b4ba3c28369. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/TCABS1371390.
The Orb Presents Tundra & Sunflakes, Vol. 2 (Compiled & Mixed By The Orb)