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 0x7a45d2e8662a9e361909f5ca11eb2621ae4e8d00d5525542930687b74670e502. 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/c09d4317-68c3-4521-b6a7-00b0ecf0743f.json and https://artists.proofprofile.net/proofs/artist/c09d4317-68c3-4521-b6a7-00b0ecf0743f.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 0xcfd0e4751cb6cb81c71d29bc361243d8c31837d8bf773253f8110bda60fc192b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DKVW41200305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfe1b021edc5a5c8c9d22460f69ff89bd8f97ffa3437ba85209148f2de5ee72. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEL021570049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a6d0685f32f0f63da44f3e950c95793884d7f94042690853c0df3002b7362b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/DEL021570052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559e0880ff07a0d8bf1a1e72effabfe8f0e8f794f9bf6fde60c69c9ad6928778. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEL021570057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bb9cc5f14245379a2cf4c470604399ebfd9897057ac9397329df5b2367fec6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEL021770032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9bef0da2ef27e9aebc65d248d0e4a62dfa6c8cde22c283552457c9a1d22ad. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEL021770041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb9bef0da2ef27e9aebc65d248d0e4a62dfa6c8cde22c283552457c9a1d22ad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEL021770041.
Untouchable (August's Stella Polaris Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bb9cc5f14245379a2cf4c470604399ebfd9897057ac9397329df5b2367fec6. 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/DEL021770032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b388ee87627cf2a2cc1bf2bc645f372a05ae70724b1cb157f8a1938d22675a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DEL021770068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af86b67f7cb3d53e3b701765e0025ddcb4f2306e0ba48310b2900dfb0750e51. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEL021870006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f68f3092ef871527ed5836543090f4fa6cc4c2a08cfad5cdb7e5f0beec90ab. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEL021870007.
My Heart Is Hungry And The Days Go By So Quickly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3356604474a9bf8eeb710bf6f07335fa4e5e0003856f17324963d5d468ebfff. 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/DK2DY2200476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ce5628233b2ad275456f6307f47536a6ecc792781481592a89ec7c6b2ca589. 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/QM4TX2260210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad309c99dd1bd59e3b57de461d8436d5abb551a743ee3c33c2eed42b87d46bb3. 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/DEL021570055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cf26197f51c036ea55d6a0359b0c2c90ecec4ef1ce9d1efe46de450b15fc42. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DKADG1000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69e339a379fabfb409dacbee292574e87d5a232ee28df06f338fbe036b77095. 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/FC4DK1600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6696df88e3c50fd9192bfd0afecfb7fdd56067250bceecb5939cb8073512cb9. 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/DKHL31200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673461f092dd9907d6a2b1b0764d33f46fe71b6c4094ffe191f18659c46de8d3. 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/DEL021270159.
Lose Yourself to Jenny - Maxxi Soundsystem Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1416ae64e19e174aa486a65d5069e1f9da2668a86b952428db5598ad710bacbe. 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/DEL021270046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07816185dc188e9b584c1412aa0a3857349203413c333f4328daa4ad247cf8be. 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/DEL021270077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d08b83e1ba914354ea3175794011e8f4b0d532cb972bfe3e8f7d3732a2550. 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/DEL020970039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359da0fd03f969102eb08de69ef63b0689abdbf4380a034a06ed4c29ee24139f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEL020970053.