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 0xcc5913e3cd18fb278bed81cf9e03cac8f0d2948ed71475e22a0572bcac380b4d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29a51aa2-4798-4d32-b2e4-ebebe6444b27.json and https://artists.proofprofile.net/proofs/artist/29a51aa2-4798-4d32-b2e4-ebebe6444b27.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 0xc15efa2977ab58fcde4b94db3e7a6980f3c4be70747589364ba00f3dbc61f80f. 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/USLD91753380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7757689f37344a460b6572f6db0457f8bc67c9c43c85b5de2e91268b6f8fec41. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USLD91753576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e3bf1448c67d718aa13785cb3f18fe8db8bf11239ed99dd11c217e006c57c1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USLD91755463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a3a7a8ef8f70d8b469b9575ca33666e7639de83b8a79444501cff8df00ef13. 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/USLD91759559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbe239f0ad4636e7b494e42f7215583573e8ebb97670747aff0b842b963cfe0. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USLD91758908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a91df9d5159976d79af306f12336ed86a0100fd9a888edf60697f0d4ef2b3f6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/USLD91760597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b03905734c6adb4bec9285f051a5aea3a0c79cce457af390cdf9cef8bb61bd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:59:26Z), 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/USLD91760601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2704a6ffba5900faeebe670115150e84bde8d9dacab0eedc45d543a95d2bdfc7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USLD91760603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c708b6f1b2bbc1da124b3ac21f5a512b6f7658feb95574a135730d2bc3c7b51. 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/USLD91765052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b244d11f376b48cd0de5d66342080f1a3f02df3791286fde6fc71a4ab21ffd2. 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/USLD91770371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920df18f774d9844bfad8429c53f563142863a7dc7f11f2824d7da3d4687aadb. 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/USLD91770645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb261e1970b377ec967c6d040b2574ac241c238de1137212bd16af593bb4c061e. 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/USLD91770646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd04501256deb179c78f142e96dae9b496c3cc692fde6abe2434cd2f33c736b. 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/USLD91770648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf941bd7978730f966e19717dfad4c1130acf377a6930042d427ab64c410af8. 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/USLD91770649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101d30c4ad249cb4bba0459a47ff5f9ebc1ca933109e3b41cefef5e771d91efd. 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/USLD91770650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48a54104d0b9430725ec0025b2d34a50fe74a818a08e9d21aae4126881b12da. 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/USLD91770651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9067cc4611961a94c46293529b9e066ed3517cb40083f0a7f006bec0930a85. 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/USLD91770652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54769573dc3874e2070111a1a0a5b3a6bdc1c87a55d4fe7fd290b714b1a1d4f. 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/USLD91770654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ccf7dc2d2c3796270689a26ac911f0ac15d5120e6177ad2bce752daf4ad324. 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/USLD91770655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a0b6e17235301c57df6189db18d3aac7ef2203f66881187ce2195ecdf5057d. 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/USLD91770656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a765cd518fd1d9ee72a848e6e6ed37c0c4bb3a57ba7b7d46a874bb90fc381c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USLD91770653.
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 0x675e026167a208fd6e35ab5bfbb2e8bb620f37a3a6769c9f9a3470c69caa4918. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USLD91770647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc014fc416e20c148b4540d1c8edfa2aff705c04221099791acde6881bb496706. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USLD91770657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ac2316fcb7bd699ce1666eab5429ec72939fd7000df3dfce4fbc60f00d5e1a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USLD91770658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaea59a849f13d77e5fbe052af2480f923479bf381752df03e8c50016275bff5. 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/USLD91774082.
What You Tell Em (feat. Lil Justin, Lil Mon & Luh Rez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878bafaffe0d170ee6cef523d9c4f3b062f85f8622588e3bceaf5fc6d416c4aa. 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/QZJG52145548.
ForeverYc (feat. Lil Bigg, Lil Dre6o, Lil Mon & Phew3k)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7873e486b563b0fe579044796a48a6db63fac06d1d3262bb16a7bfb950d519. 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/USLD91753430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f738f44a33fb8a87ce8ef263dd112747bbffc81e7a2df313935ed78277af9ab. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:24Z), 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/USLD91753622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9063ecf520cb4d1636d5510caeac3ad76c4c1826301e233fa1adeaa300a1a1. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZMWW2284591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf3ffa11181110529a29b5c950c6158a89362600255585c456b4b549fc45022. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZMWW2285150.