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 0x25eca6039730fc0f1ac7421f11959427874b06125b96a8820bd0815eda0314bc. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efdc506c-79f4-4b4b-b003-90510ba21676.json and https://artists.proofprofile.net/proofs/artist/efdc506c-79f4-4b4b-b003-90510ba21676.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 0x4f50b0c36eb363c58dd5285570ef60190c5e2313573fbca0267938e57fd6d170. 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/USUYG1078556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fa275ed7734ef12824b2dd93ac0b2262f9f4c798b6abb8b1e53555235dc2bd. 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/USUYG1078557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e338f725e6505268b85aae936fecc8086e7178f1ddfb0b6839ef2a65371202. 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/USUYG1078559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4f34328479e834257ecf80680a96313994b8ddef32cde6c923dbef5b751123. 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/USUYG1078560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9996094ab2386e13acd0d0e4da807a1c8b2bf870f17f41ad46b18319d8ccc36. 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/USUYG1078561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c579ed446e7a36f92b8f289decd8e89e8b1dccdf3ac717fd8c1f889025c7f77. 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/USUYG1078564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae069d01a3bfd90be0c769cbe811dc138a53beca558fe8666933551dcfa5891. 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/USUYG1078568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f524d947c3ac26add6e26f2a110bbeeed3917dd73909e5c37e15c79769cb5c. 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/USUYG1078569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec74d819f21cbe8ac3a9793a71a794c0880911bbb7613c8a9f9cb06bf800d141. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USUYG1078555.
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 0x215e52f0c7bc263596cecff0a41c5f325a3ab2f814f602a1b4d9b154e6144d6b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USUYG1078558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef343da4b5163fb74f29a0b1d25db0969ea3fae01de5053bc8e8b3616b387627. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USUYG1078562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8d4d55977ca5c2b27ad16f9838e54d8793fc4fdbbe99eb579e3dc7a28f44c8. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USUYG1078563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f4517b55d793e7348b6a0d941433dbba69bc2e0a7f6953805f2645b58a749a. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USUYG1078565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f68aa4a109568bc70ad21dd97b08562c71ae193ff892734e2d4678c2131ae4. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USUYG1078566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a5adf070919bfc7326a18f9b58b04c9473de3b20845062714efbbb6f8c004c. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USUYG1078567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892d580879f6eee685eb2d57b012b13ed4baecd2ae208f31e04a2aa752e90119. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USUYG1078570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b864ffd6c80549901de3ea113656ac304267c07a973c0913e4d4ac352cdc68. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USUYG1078571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0e1a6ca44380a6b9b78bc7c56f2d37852e43022f4c132a9c16cc5354e39ed1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USUYG1078572.
Throw It Back (feat. Marko Pen & Sage The Gemini) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7e8a94e0830908d381bc306b1133c7fb96eee17b4394caaf6a1c75590a7233. 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/USUYG1056440.
2DaSide (feat. Problem & Bad Lucc) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb38346d31995b669292d04f990669f8484deeb5ec27127e927cbbe0e3d30e1. 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/USUYG1032726.
Show Sumn (feat. Problem, Skeme, Freddie Gibbs, Jay Rock, G. Malone & Bad Lucc) - Single