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 0xd015011ceb3384e59aec975f2dbddf770d5581601c292df1da7a861f736d8519. 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/7da965e2-9151-4bdd-8e49-e344e2b8116a.json and https://artists.proofprofile.net/proofs/artist/7da965e2-9151-4bdd-8e49-e344e2b8116a.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 0x4d48dc3b74935ccc2f29a8de241e935313c8f230da9b736ee5ad5b639c38119d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USUYG1235024.
Priorities (feat. ALLBLACK & Tommy Grizzcetti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eff87db66917ae688ea96df80eb0dab50ab31610cb4b03ec5bc2e80c32d2015. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USUYG1235028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc17d1ccc605290dad50d19ede776feff83a9033412f0eaa8a377e7938a2145f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUYG1235029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93ae6cf27c750a318a668f4b510c3d35d2004a2b9dd83810bea5f712e88a346. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUYG1264804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e6e62871e3d6bb91e8f72b9092e380969ed586f935ec497e1e9aed44c0986e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USUYG1270316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb38b0ba1c6a70a90bc425916d1aafd1221a26ce418fb2f12e6822af0fe9799. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUYG1337835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fbf3ecd0abf5ba671e3a87d77d52df1eb9344af25a3b76b5acd28afb24399d. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USUYG1359788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd563621a5cb8de7ebab41c736264b116f9fcf2a248c58e72caafa78478b9fc7d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USUYG1366390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6417f80b3cfe36f21ad59e715da65ac3468209cc74ecc2b81db295b28eb3c32f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USUYG1377436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42858959c97ba724b6ec822c46f0c6611eef112a30c0cdd8e3db453519a5eb99. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USUYG1384295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c494c59f6a78ce7ecf997b76f081dde9b2d9f6fb00701e6e290cfeeaae0428. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USUYG1386900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6417f80b3cfe36f21ad59e715da65ac3468209cc74ecc2b81db295b28eb3c32f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USUYG1377436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42858959c97ba724b6ec822c46f0c6611eef112a30c0cdd8e3db453519a5eb99. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USUYG1384295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bbb8a6844b7ded58d767815d2dfa922d4c32f23ffe50d2cbe97ae5fbc382c8. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USUYG1386896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c494c59f6a78ce7ecf997b76f081dde9b2d9f6fb00701e6e290cfeeaae0428. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/USUYG1386900.
Ocean Blue Tints (feat. Baby Money & BabyTron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb9b76d6f87865aaa42207e3673381c158b75dc0fce8b77f6b4c53f7db5a648. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USUYG1445487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe1c33d9cba25ef3f227cc14f4e7d7e730dabb4f417e4a193585205b30efbd6. 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/USUYG1493947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a21b0e3ae4bfba774b92093788fd93369e57ca214b57d37350cf4f2b582070. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USUYG1493948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf942ca46fc13b4893ddea6a3a816e128576547b4f073ea2ed6ff027e132f63d. 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/USUYG1493949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a24bf7f57fe9aaa9dbeddd110865e2a90d9f06933dcdf1bb38d2e06415f8d7. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USUYG1726618.
22nd Ways Interlude (feat. ALLBLACK & 22nd Jim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ade1ee0a77b5301b5de1ea292ac2f7f9af5d6ebacc06dc251b59adb5904c81. 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/USUYG1440120.
Big Steppa (feat. Mari Taylor & Offset Jim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8551f95f9731708032aa830632570a46e8134be9ce0b306c275ab8c1aedef88. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USUYG1357582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d60a5a72365bfd3cd51452f03dae1781e3a753f017592c9a90224a15f54c682. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USUYG1413389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ade1ee0a77b5301b5de1ea292ac2f7f9af5d6ebacc06dc251b59adb5904c81. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USUYG1440120.
chef curry (feat. 22nd Jim & Jay Anthony)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c3bdedb9f4640d4524ed977e97006137cab7ab875f3de385f1b924de8ba157. 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/US38Y2405320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0230599e710f2e53c88f657c469878f885a3e3cf9d0665afc6db6806a2607a24. 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/USUYG1272937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762c8007518c2eaaf9393a4b75fd977c1ec9207567ea55dd91bf1dd1acf604a6. 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/USUYG1272938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc92078e7798e4ab7cc60a1ca497d183b3afbed01ac1c6df51c8c1b2ef57d108. 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/USUYG1272939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb848da1d73523b432ce5b3962dfaf63566889934fe62478a6341fd7914c9fec. 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/USUYG1272940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27625c10bb661d04425843675f6320434f1319204dc63b3db7b36cf40da01a0b. 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/USUYG1272941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3f36fb80ce91ddd8a8f49a773cab2995356a42777a748d2fad2857314e344b. 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/USUYG1272942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3bb3df96c33eba3c34bd6bb1fb51bda4220de85a1b4a3d74fbc57f676deb15. 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/USUYG1272943.
Trip On It (feat. DaBoii, $tupid Young & Fenix Flexin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ffd8850dcd4d7a562e460ca342f8e7201dad3d4cb2939f4987cf08b26192ba. 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/USUYG1272944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f9b50a0f5dad8bf48a56f0ecc2bd6e3f40f738a76dbaef93283c3dd4fbb299. 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/USUYG1272945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d41cd5269c76f019bda1616864ba7f29b35de2e1ca66944917a6395633f865. 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/USUYG1272946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bcedc2193813c750d0c0be4d03e0e01c5fa14747ba5a966f5f54eddea8f4cc. 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/USUYG1189755.
The Relay (feat. Ralfy the Plug, Offset Jim, G2 & Murdock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24efae7ab01d98c9dea2d52a703a6be21d8c86ebb5342bb0266d31837fd87ec. 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/USUYG1183476.