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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 0x6ed6a39df27dd382addce9319433fbdac721f087334b81041b954a165e37922c. 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/068b9f5a-9132-42be-912a-07997c73f228.json and https://artists.proofprofile.net/proofs/artist/068b9f5a-9132-42be-912a-07997c73f228.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 0xa2d14b8f0f048f6089ded7ac4eb844cadb98442c6189b32b2a3b7b4683aa3a35. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEYO71200306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9b0db69d416e6a76f85f20339fb6c9b68e793133c6faed5c95af141c6ede7a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEYO71200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb5a4940a064b12103f06a88007e4438201cead20ed7e572746fdc632577da9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/SEYO71200308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fb8e7712fea4344459e758f79244de58dc5cecf66eb28e884d9c845cb375b9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/SEYO71200310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd94a5f326019d8f4fa8d90f9d6d14dddc53aa3b0a57cdab9ed5a78675f9abe. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/SEYO71200311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926a16e5c3d7b49f659692ac5f9983f60f573e47e79f62491b8b510510fb8dc7. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/SEYO71200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5209430fd3201d99ee44fc42ec2382102c39c669a1f880c13e7e864a36078cb5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SEYO71200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c92b22203cbe2dca7a15a78b8096b21f2344a0d736b61ac80e1819ef37ace81. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/SEYO71200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbe872cad1d3a41ddcad2c33d6db9c37e841923575f49ed2f3639f3a1503ac0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEYO71200407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978e3c9b00bcc90e20601acbff9a1f88314c168abdb177885c26d5c66e6af918. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEYO71200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef0fed254d42697f3b6ecac4f3985c7f6bc8ddf52e4206f35d3dd79d7326cb0. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/SEYO71200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eafed2c270ee98a25486b2bc1ca0588fe9564e06797a4062b35f731757c3aad. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SEYO71200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67db93dff87ac3443d744e931ca7e767f9eaae1035057d1ac80ad45aa0b4091d. 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/SEYO71200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f38d2bc1fd9ea0cc2792f68e2833d9efe565695a713751a3eba20de5706abde. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SEYO71200705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42cd17d744854899f90153b45e168dffce64c192ec630f992e361e6f71ac381. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYO71200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621eb7233a039c6d69a14c727f4cfa800178bc92d71974ca72b80222f3db7481. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/SEYO71200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad74ae7851636631a5bc216d9d35de8c1cf3302b5e8902ee732710144c03c99. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/SEYO71200715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03044e188a979180bb2e37b4f5ade9b625c8bf7bf4e75bb7b35f3e2fff200737. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/SEYO71300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e119228d08cd785022c0422bf8e3c4f6f946eefc54809f923a473348bd7568. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SEYO71300204.
I Am a Viking - Live at Sweden Rock Festival 2001
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac122bd0f12b35dddae2747f1fc3ff781de1ce954f73c827f6c3aa1fdef5a80. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEYO71300315.
Five Men Live at Sweden Rock Festival 2003
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0494846e67454bd29ce6a1991025bc619a222d8f5993bdfda74ce771dc3d22. 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/SEYO71200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020bb59ca240230d03f351d83bd9f111aee16713ca58429c2653be8409300f3b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/SEYO71200722.
Live At Sweden Rock Festival 2001 & 2003 (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be27eb105d6a58c2d55c75066c4e8351d0894c4c728fa206d23b9670d631646. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SEY072400101.