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 0x3da574f224c91baf3bfbf567f87041d5ac703dab3b9390855f9b67b2f661898f. 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/4533e206-e535-4e86-96e5-83a0c0b177b9.json and https://artists.proofprofile.net/proofs/artist/4533e206-e535-4e86-96e5-83a0c0b177b9.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 0xef0f04b8607a34eab9252f2c15a074ed0f7c5c300b58ebd89ce7758719aa2ea8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX872368393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8457fa27b315c6cbc1388fa7d8ed772dd437e8b608bda8aa1890b54bff725f19. 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/FRX872371563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3971b8e1a2d49734ab25da4436b2421b96d8f067f106741478b3ab0bd800631f. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FR2X41952611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd190ecd9370b30b3056091f1f3ee83f744f762ae329d36c830be0ffd0b11258d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X41981768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5fa9c090332b6cdd72feeeb0f4c6c7236e4c156441f1173a196c0d2a085a5e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR2X41715170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cd20c8ec422e9a029a6232a18c9259fdb35863422aa2f9d1b1bb0c4c8b2802. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BDA081701229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df6504f5348bc27e43096203407e7e9e914b73f048e40885e32cc214158589a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BDA081701230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3aa5d21238c787ee2ee3ababc7cc6255e52ee5cc4bce09f387fae814cde54d8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX872371554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad926d5d6a61b3d4eb1db41155607c70c96b5e7ade3071a2b0010805bab99bff. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR96X2014105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48060802133e5d138728e922104ef37755e71e6aaa3fa1f4a8f9809c5c14a918. 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/DGA062314315.
Bheja Bheja Chokh (Slowed & Reverb Version) Lofi Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7399f465743c68fa66e778ec7a6969e9cd6b0ef8e4caef70df969b810fd53645. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BDB081701229.
Ek Shohor Bhalobasha (Slowed & Reverb) Lofi Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3f8d897d65317e1392ba450c74be62345b369469c47ae853dced37510c2254. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:44Z), 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/FR96X2576138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487dbdb1fc530b0c6902e9e2b9266ef492c15795abf06fbbcce29fdecd4756d7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZWU2500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd572e4ad4a8b5baaa5c4ad71ef78fc03c8e4ef7194f2d1028a31db6e4a1b011. 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/HUDHU2519594.