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 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 0xefb8c8b225c6005b96aa8518693cd8194ee04c60d695dce435c6556ee3a885ec. 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/0a25b082-7428-4983-8ee3-3737854c5a32.json and https://artists.proofprofile.net/proofs/artist/0a25b082-7428-4983-8ee3-3737854c5a32.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 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 0x3a0f03b111a37dcb64d9176b1091221995a0a56e2089bd1b6d170756098a50e8. 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/DEEL42303007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1411b25d1c03da016e427f4008f1e17372e3993142ef46e6d0eea461bdd4f57f. 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/GBKQU2379632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd62e05dcac32ed7a0658701d02e5bb1eda6919fc7684682d62b529fac0d9a31. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEU672000473.
Just Another Day (feat. dOP & Greg Paulus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e64549180c2b9e3c3d65c1a465dca71e7216caafc2aa63c960b20bd2f28ae62. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEU672000476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014454d10b260c160101809acf1f941856afb412acb597ae65ce9c6580e44042. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEU672000477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244c9679d8c641f4562ac57ec021234661d5f9a7ae6c29bde9039e056d6130d7. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GBHQT1800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01465a80d9638bc8f1c204227508f653c4304271b4268d50a404f885feba4a82. 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/GBKQU2467561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b26b28d53cbaa53605a4a5eafce4f8df153542f29dd0f9939039100ca24a02. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/DEH742418762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2eb641a79a5f1bd3ce8a3ff7a3b31804383fbf76a068597a946eb215dd9e98. 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/GBKQU2446602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24779e9d7722ebb22f4858ea4739279f72000e4d121c6078137d2e77bf9651e5. 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/GBKQU2446603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250908cd79aa868d2651c613ec8207dc78cdba7113c548c9c249dbbc278fbead. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/GBKQU2446604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316c39cd415599353a817aeb7d8bd8625c780a0f032095b980aa434c0d2e31e1. 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/DETB32400115.
Ashbor - Dazzle Drums & Roi Azulay Versions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecf234f502d1262788c5eb0bb1a1cd4230057d99f6ec990f84c853d670631b7. 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/GBKQU2393027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9a04fca6e62ec985150af761795af682fee190c03ed5939efb00d6955ca4d7. 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/GBKQU2366021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509c15fdfaf8a02f2b3746b806f2c40f5b3f20cd516e4ecc264d5a0b2281e3ca. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKQU2366022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc096103c3cb2a08b0ab98f875e6e6766e9308955b1f9e8940820f6dc8a7daaaa. 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/GBKQU2353143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b6c7fdd2d46066e12220d12432dc97c0f7b06866557a82135f7a484d58a70e. 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/NLCK42212647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305490ce850cbd90b1b300469396a3c2c2196805cc567725d0787db14b32f632. 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/IL7532212673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f047d2f09658165ad796a618095165ca2807747da0bf79c482850c9064b574e. 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/GBEXH2200219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02361720493c9519767b8c8705fda9a459b873316c0cff879bec55677b80357c. 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/CACWV2356228.