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 0x43edaeeb7f356f0b35a25cc2170d7fa010f5c1b06e8e8b955d37822f890f420a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8e37fdc-fd4d-4cee-b3ee-127767b64ff8.json and https://artists.proofprofile.net/proofs/artist/b8e37fdc-fd4d-4cee-b3ee-127767b64ff8.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 0x0057d6f662a9de1888cfcd8f1758193af6b24980e53a8a69d2e90c55fc840daf. 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/QZFZ42227984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6485aafcba4ed19a32e6c50fc4ae938069d6a835e481582f2378685f675e9ed2. 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/QZFZ42227985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1acd80746d1c9b1e67680bd8e7c9c938fe9c7b1ef45f0aed74e35f117b7896. 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/QZFZ42227986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc323dd331e37e572b46c11308f418e7c20a7ecd8e6a59403e5b92542af4aede3. 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/QZFZ42227988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5794fc07232062e9b00600dd61b53caf7b5a26958d71aba8d37ccc85ac1d83d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZFZ42227990.
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 0x5b00cbd2d438c5852e92e40fb4373b5206c0d171e9297bcbeb833dfd62b8346b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZFYY2268741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd766b3891be160b08489c33d2e6bf1822e9828c2588d92dc84927da31b47bfd3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZTAS2132146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5eb1c7cf690e388c91c19304f5153d040400aa3268993f2025e1237eb87cefe. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZFZ42227995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e92dcd59c454d2415a6c1849da31c056f433eedeb8fee35bdb90f9015cc6f46. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZFZ42227996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486bf9add57e59293ded82a5a0462c5880bcbe88bfd0408558f4965ccae4c6d6. 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/USY251779267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f1d5fe6990cfa146a084e387a998cfb007497debd4eea7fb8a6f2dd1c21eac. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USY251779268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f52bc9c00b883acd5f906b84142d0d845af742e16ec9430c74d2b2bd8d53234. 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/USY251779270.
Tortured Inhabitants (feat. Larry Wang of Coprocephalic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe329462625343fa1b7eae16cca11e0a2cafb3eeb404b8e19d74bb68308efd9b8. 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/USY251779271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350e833c4b8de35e871a3755d773933abbc218a5f87f0468edb04b0fa80f08a1. 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/USY251779273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf721b8567d9e5db7ac84a0076d32ca11079ee4104493f8fa856b8682a54d235. 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/USY251779269.
Pulverized Septic Remnants (BONUS TRACK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c662093106d83c33588914838968a790beb59a7b6d9afbe6436911708ba7d8. 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/USY251779272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1304c9f201d3cb5a259a9271d46f42f67fde4fe1de2b5ab11225eab84e2d1a60. 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/QZDA82096235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886b0b38b4f36355a324d3ef8ff3c50464e2e0d413a643a216693c2e7215a795. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/QZDA82096236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8cfaddb67478840ec8adeab53ac43137b598b6f9602f02e27da57fad6c121d. 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/QZDA82096238.