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 0x6c19fdbe0cfc8dbe091502560e390a4fcccd8dbab0e969ddd76c8580cfae8073. 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/f89b647c-3488-4283-8ad1-d73c268fbb9a.json and https://artists.proofprofile.net/proofs/artist/f89b647c-3488-4283-8ad1-d73c268fbb9a.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 0xc5c2039252091f73b5085c8f6b4c2faa4ae7eca4e6f59a791259972d33498c2d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USJ3V1308061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549ce2b1ddf2bc2ef5892dd4c5a0dfbd4e0cd9fe31890b441ae5daa790fb95d5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IT6B71700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80a3786b8dc16e7544c3b6df0e0cd7c1ef868090d0d7f70c87586b5dec61ef3. 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/IT6B71600086.
Cierro Los Ojos (Francesco Giglio Remix)
Since I've Met You (Francesco Giglio Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80a3786b8dc16e7544c3b6df0e0cd7c1ef868090d0d7f70c87586b5dec61ef3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IT6B71600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64daacf3d16812f7a73243d04a9efbbfd4a8dff21a201a02bce6bd4e75cf8f5e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/US83Z2506063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aafe3c1f157a53f3e062455b0bcea2e839d316a021d7ce3bf51fe3253b13f90. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IT6B72500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1ee7e4116089e33a4ac3acc691d01588c3e14f50f09d8d6bf30db14b95d5b4. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/IT6B72500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c3a8755668b3609e0ab7a9fcad2e6415616c8dacf72eb4eef758a5e3d02f52. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/IT6B72500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c86f21d089edeff2a0c05ad7d16bbf0248acab26f9beede48ae9908164a1232. 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/FR85U2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70aeebb6f27925a5f4b3a0c11af7411478254b1a354db2dcab2da2a134939b9. 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/IT6B71600051.
Buddha Bar Summer of Chill, 2nd Session (by Ravin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc382f671f600c465905209fe7047045c8546c17cf52fcbddf5976cd73a7fca1a. 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/FR85U2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb150a57743c0f189933dafb0b32170baf95bb4e5da9c08de2f455ea37ed969. 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/FR85U2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5eeb1f2422218346c27c7010342bfb2b04bd2a5d615e52bf00b842d49c63fc. 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/IT6B71600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c78b2e2bd7fe5be77399de6a0672b5173c7346bca809f57feca00a8ac2cf751. 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/IT6B71400004.