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 0x6e66b6fb6e5334ef11b2bf3e104f0932c49d42654c184e52ab2b9b8fe93bb05c. 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/204c4d0e-2158-4b33-9b8e-160952b6f957.json and https://artists.proofprofile.net/proofs/artist/204c4d0e-2158-4b33-9b8e-160952b6f957.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 0x7e77c1a702711f26fb0295b3236f0b8eb96a5189c0a5d07bc88d96beba1c0ae7. 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/NLT2H2300633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd8d78db13de4c90628ae4f95ec40257ba95242823b21b66bf355017be0bf8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA052396798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78df882f846773dd2d2b2b1b933426128b3500efc2d1f1ea46e88f62522dc28. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEZ902300602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b259a26d511f280725d13d11fb1e3fa526c8986e4b52759830499d13551615. 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/NLT2H2300383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b7e6d094514d70318d7ea472ff161daa726d4c5ca84a2a54afb45865b0655e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6cf7e8e22ff94f26da2d2a0a02d1240f19224c76e03f75b11d16e5af4d3434. 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/DEE862300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1339dc265c085124465567659bdfd19d58bb15eb32a72eaeee3c4b0ca2f5b29c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2200849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf338903689e6a1be4f85f2b87649f49bbde2e004fdab197feba1b84f02cc9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22209778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02afcc4e4ffbb8ff8b58be712c0b4a680e0eb8c67e5a6f88191994128e20937b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE862201007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8476388f436ae892f390438618efe0e07a40f200f071db9e88e51cab48dca758. 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/QM6MZ2270730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047250b01b6ad9bd36c746f053e63ef9124e8d597a9bbccd894741ccdd227687. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEE862200687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a66c106a556e1ef84b6cad2588aadd2738b0477315a5fcd64deef836953f65. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE862200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ae95020d58985e76010769ebb7b296723578e578b553b4e5dcedf59330b23c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72140709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc890bcbfb2bad4bbba66d56b86270dd4e0398a06b1614734ef16f009bb30cb88. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEUM72118502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21862d4a27fbefe9b537f8940af68e80b0476f642a1dc16a5464dadc26c1662. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2100881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6230fc68bbc97d7507c062f536609b4b25f494c585e5ac6ec36101936ffe3fde. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEE862102019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee83841643b47be5ec8b2adf5b916a170eaa91de5881d6c8b585350cf6427b9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEE862100928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17205cdec567899cadc939801e96627dd9bf8e93746def736182903032890ad7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ2132685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c85816f7e5c4a7578b71f808884a64a9dca321847610d4cd476442cb67c41e. 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/DEE862100595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dc044bdf4cd6a028e7ffd6bfbf8eec36606f81766e386c0edd882914ddc7d8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEE862002954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bf68553fe3c2906a5e72d470d94fc9a862e6c4b40cbc9917283e8716a5c5de. 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/NLZ542002246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198da186415fa7fbf007ba57a42bf7c0664bbb1b63531506fab58addaf458376. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMFMF2377556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51abbbc99d1205e3930d4d1d524bd473adb5393b93e1b30db0b70c08a26ef332. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLT2H2301062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426fb0b9ae8796dc8f4d85eea8c923c35d7994c4c17199f5af914beecf80b799. 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/DGA0M2377831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6546ac07b13cf288b93e95d4795c04f08f70a64a541907b097abd1077bae14ef. 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/NLT2H2300868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6078afea9d30abb68eb1ccd51e740dde3b0cb4db722029804d0431140f12f415. 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/FRX282486640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bb5e8f6787566c91645c4ad3dc09dec57be38850ad145c629d8f409c2263b5. 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/NLT2H2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78bfa4e6b5b6353ad9b0546b599021f150f707417890c73efa8c23b9e1a7279. 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/QMDA62412940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdda80efb46c8691606013fea8c53d6d82aec6fb6a6867fdaeee820785a604d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLT2H2400562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7f5a246fa78859d38195fc386217720e537c7436494bf7b0d99e62371dbea7. 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/DERI31400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bcdd6c5579a3fc8738ede3e75747b8b005f2649aafd56ec649db8b641d3745. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLT2H2401152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ea0ff18b1e8f349da7d5bcf0614c931564ee876b30929a37465400c2c6eb4. 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/NLZ542400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ca7d4efc99177fcc2849161c3e406b19fdf5a6535ac6e2129eb543851b859c. 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/GXBDT2391458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7a88d2c151f59ea5cb72624204503893c4e0271cba177066ab3ea3d01a62c9. 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/QMFMG2368785.