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 0x84923aa5ccaab97cf512507f97d082fa753bde022a3095638df1ffef835d6e33. 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/4514c93f-9f98-4974-86f2-da45d4245634.json and https://artists.proofprofile.net/proofs/artist/4514c93f-9f98-4974-86f2-da45d4245634.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 0x71a82a6607e751be75510350ee131e3d9f3f5381cbd2cc6987b86592b2be2acd. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:28:42Z), 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/QM24S1705218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876001c7ce4cfaec01db7a041aa551f3a1a6f77617a9b2c15da6034b53b9e314. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QM24S1820259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9c38a42e81844df6b510ca90ce05d1a4a43f57df609fd8644b0c37ba237858. 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/SE5BU1945759.
Don't Have To Say You're Sorry - Chexter Remix
Don’t Have To Say You’re Sorry - Chexter Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2587536afffecc8d9010a0f013d76a929fea94b745cdddaa57c7908fbba65014. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:09:40Z), 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/QM42K1937173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6eb26167997eb7c2666eae9f05a0e59a896733ab9b33e8f15f324c14569dad. 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/QZTL92589904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf14f6321dc5e499fbb4ffe5e6be21744c33be4cb963abd2388d3b6fd035c0d. 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/QZTL92500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f5586aa36d3bf98c23f013100baabba03185b8262906227188e57a7c9f5421. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE5BU2513880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8b3a31b242917312164f6dba3f396cab3619e5d016c027f50a4ba6964a00d0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5BU2513874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe873d0689ee9c0b1505a9762b988a7e92e571cf2275d7b8ceba2dfb70f554ce6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:01:06Z), 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/SE5BU2513875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06921301d084a17d307254ad05d10928f42aa45932f7bc3407a08fbe7bfa4b29. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:34:58Z), 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/SE5BU2513876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ada4c40a851a91c1580efea48919d9d5de45bb0707e359aff1acbdb9cdd3bdc. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:20:32Z), 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/SE5BU2513877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfbb126f2a535d0d24be9f01e80b7f5d359b24b7b37abad7fecaf80f722c4bd. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:19:45Z), 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/SE5BU2511049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe445adf4ace193b43d9e77486cf9d3a7e194133aa6a626c88e8d1d51ac47754e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SE5BU2513879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f5586aa36d3bf98c23f013100baabba03185b8262906227188e57a7c9f5421. 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/SE5BU2513880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2356c4bca3c4200794334de592aaeae67daec1b477aeb3664e6466c2a57757b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SE5BU2513881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1d4ff018b9c87b9258029071f5e641f662e0d8ed20d316881cb46183f11818. 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/SE5BU2513882.