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 0x086b5989cf571c580cf13f072b3868a9b9edfcf448465989db4558447cb994a5. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5b15185-5caf-4ce9-9fb3-45025bba46c3.json and https://artists.proofprofile.net/proofs/artist/c5b15185-5caf-4ce9-9fb3-45025bba46c3.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 0x7484a178aa90bae7efae3c560b2a2ff6d2080896c247becaf9695c6ac9dacbc7. 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/QZWFP2327377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b3c0d197e6d7bb315d64baf0931da82e87cf042f494adba164409087da318a. 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/QZWFP2327380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2168483bdd3d3cce9dca07ac5af2bd200a7f7991f57989bf361168cddd2e12ca. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZWFP2327375.
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 0x02df4355398d751b41704ac8811f31860d6500b0934fafdb177346db7cd9f459. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZWFP2327376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f903f8e176f8c03af38d9e7be3976eefaea4196ec8788d719f4976c1f6bec5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZWFP2327378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265caae9f9511e7d71501e638bad6cd65f03c07c03276e8b6924e2bae67c30d7. 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/UKL4N1700262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5f04cd7b0cb866284325e5c62e6eecfea49aa0ffb7e73bcd91f920a929b53a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKL4N1700265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b990426a0e0a069492f38b18e8fcd8e6c9e3e7b08f8606e1c643dbe1d5c9ad. 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/UKL4N1700259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d24453c7105c4f63ba4422bd9913cdca4fe760b091ee827a5f11fc4b3478620. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/UKL4N1700260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84203a0a008bf2d0eb234618495bdfbe7ea75f0c0b0d6b20c8180b729e148af2. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/UKL4N1700261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d190c053ee00e6871a62f48f681501799f0b9853f88a5ebb6366483c5d6535. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/UKL4N1700263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e96793b9f3dcd120b05f18846229c0e6c2db4e4745a44cf262bd54ce6c173f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/UKL4N1700264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0b48c39c17808b33214db4a4417a4d223ed2862c3832e2a30dbfcd392dcb31. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZHN82391260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4c3ab17449a131c497056a0ca490a56b8c17f4dbb3e0de4ac199f02a79022a. 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/QZHN82391262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a998edb3dcba04b3a03a988ec44a7a4b49b717fd44a596649aa90ff310c8b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN82391263.
Most Wanted - Donnie Cosmo Broken Telephone Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6335873556e9897c52ce6e41a9e30e81e7c07d838d220ce75da36cedeeef5ea. 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/QZHN82391264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969d5c8b57935e6a2f9fc687cc7bcd416ab4f10e2a6160ba87c49c2b791cbccb. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZHN82391261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff17284598130d9aa13997af0744d8f8054e98fc474dc73c622016230bfeeff. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMHN2385751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351835148a92de301b84eed59f5f60929381f5f950eb3f7602d960724ca27102. 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/QM42K2308471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6168a517b4e088874763bc32907c5cb3d55226599aa7f426507373c37a5698ae. 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/QZMHL2380558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef1c59200bc8a86e5ce4223f4c06b08c57833da278bfe1ccc49f091bb192e87. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZS632396710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81277e4c4b50038ecb9bce45342ff1568e6e0469f265b288555f998315be1c7b. 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/QZS632307956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f254290c81a7417d32a833bcc56b86f935837cc449b83fd59c797ce3d84956. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZMHK2343125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa426d2ce04594f9f269e7442842b29c9ed6afb55edf2ccb3cc34e773743dbd3d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZS642366488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7582a5b2a0c5583508fdab5e90b94794068ae64bfa76b37fcc6a653ed42e8821. 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/FRX282208209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a98e6a7af24f8e2d9b2cac58892da39be5bb7d0de5ea12b9c3a8d65c171b6b. 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/FRX282208210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea095900a1810b7061390c445761ad728972b7d1db3ab7d787f328869923d440. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FRX202287404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd940548bb2570c0d2bd030094869d62f1baea68b18043e3de986a7b6ffd3e4e2. 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/QZHN32450010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca7ac7fdae773ad1003e96b125057c81e893c764fef7751995fd1e91e67845e. 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/QZTB22219047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb273f29e5850b0bcb327e2b1b1395deab30ef4991ff94299cf1db44561961e8a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTB22222118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25958748196398152b3231e17cf8b491bc7fbdee2d34e4bfe05551ec1091555e. 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/QZTB22219037.