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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 0x7d97704f1fee5e24207dfd6506b481ba8dc2cf99237ac0581fc87246ca847174. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2b315be-4618-4db3-bc6f-efe9ac145820.json and https://artists.proofprofile.net/proofs/artist/f2b315be-4618-4db3-bc6f-efe9ac145820.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Midnight Sun - DJ Ibon's Never Mind Mix
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 0xdf6c53a6a4bd3cdd349484f4e100d7b152ce00b111f2b9fd0daedecaff36f8ad. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/UK6491400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea817ce81b1ce6fdb8c4879922267192790ac189496ef10ab47028c02ddaf6a6. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/UK6491400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cb1cb4b3e0e84b3f9865fec04438caf648cd304458973609830e789542e170. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/UK6491400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dace270f0c3321fd0e4777c9cddbda610c6dca0f5cb42ceae473e7e395d33a. 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/UK6491400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0336bdda2ee43926945702431bb3e46f10120b6f0f962c6cdca3fdb416755c. 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/UK6491400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa193acf0816b3b4d7640a17ac81ff547b3474b221d539e6d1513a89f580bc9. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/UK6491400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77fb944bd391d80b7d0d05f5c32d5a7617a6f4810ad60f902663ca34648d5cc. 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/UK6491400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ac8778ca86d308b36dd01dcc2b52088272b75180fcdccc9c2372f8211141ee. 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/UK6491400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16c770e7eeaaddaaf73f6a5b6170b642e57e38fb0d318347bfd5d0395de392d. 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/UK6491400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350996055e3ca2d6e4e6124b82f4217f7cd5ea8c24e7c9873c2edc18cd0c2ebd. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/UK6491400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea817ce81b1ce6fdb8c4879922267192790ac189496ef10ab47028c02ddaf6a6. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/UK6491400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cb1cb4b3e0e84b3f9865fec04438caf648cd304458973609830e789542e170. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/UK6491400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dace270f0c3321fd0e4777c9cddbda610c6dca0f5cb42ceae473e7e395d33a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/UK6491400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc34a06806fbc93ec640504d241192974513f89b111e0ca8dd1b32df24db1237. 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/UK6491400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4ff6969e9d81def79524b4d8b7a4c42332acfd9bbb408b5e714535b2a73981. 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/UK6491400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fa2d897e6b51eb4cd92a8dfb32546c7a444f3962ade193562c832d4fdb7ec7. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/UK6491400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4902e3383e3e74681be3493a67026bb91cd243dbbc33fbf3030ff9450c6d91f5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/UK6491400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75f5226120190cd6c7c985182543a1ae33255240b5bd08e82376a92e293ea8d. 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/DEZN82499149.