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 0x18bea8d9624bd60bb587dd6bf06a52807b639555083d22d1abfdab917cb445c2. 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/07789c3b-abab-4cfe-9837-0123427077f4.json and https://artists.proofprofile.net/proofs/artist/07789c3b-abab-4cfe-9837-0123427077f4.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 0x764033be017a9df7f7f79c4bf7a7996874b42fa4c1f999930624afe0b33597fc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE5751886608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc015f67810f9c5a6b49e9664eb5d63c40c2a570c0d74b7f199eead4c9459312b. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/SE5751886611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02d4c85170b5c373deca39427f59b209fa1794abc4b852fa3c42cc4eae0fc93. 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/QM24S1906194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab9367cc1000f101d1c94cef06783fce24aab69a4eb05d5304a7fc009eaa57c. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZFYY1930095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6324ea166243f39f86bf0e71adbcb396e8333308468761d8cbc2ff21514ba7. 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/USANG2034183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc123856745952a8e56d721f32447129c47c0d9a06284e223302e5a9434397822. 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/US3DF2062277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68933fa5f567d770875b8d8cb1c59855feedde971717677dd2990dc1704ce04. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QM3DF2004548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3143849118ef48b39eaee3f1a5af97de083656078b1d77eb6ec9ed0588a6ac6. 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/DEQ022100591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d7a1d7fcbed02657b90b2f28f8e5dde2298b457123139771dc529637eb3a88. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ATUM42100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1629dd4cf59cfe392f88f6cae2983c97393158ed2adbe48e670b8d304c7ca7a. 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/US3DF2268331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d6bf3aa2450fece44110ebaa09792a738ac7ab23c82cf4108f674736a16734. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US3DF2268330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf052231000a433014d8424fc52871fbce92b8d3e50ee4daca449dff4ac55f53. 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/US3DF2268334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca75e305827e11f34b814536d9ec3f5b6ddb32552836600e992c774599716e4. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USANG2279046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1f57c7776562e61d3859a3b2b16cf127b8db61534faeba723596ff8aa3743f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USANG2279048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c14c615973aca814f697ec116a6872aa2cd8062920ff14585fdbb53655c337d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM3DF2221453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8717bc47e466a8cb767b14a0e7fb176145301b239f93df7992c045d68a54710. 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/USANG2415065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1c2dc889ad3f6815f8f128654a7c4db1cb6a7196b91d4c1e55007c740c4ca7. 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/QT2VB2516463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45216b12496b2e3d159ad64b8efc1ee87e21a6fc1dada690daa0e0c653d60287. 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/US3DF2260271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b9454fb64de4ec37e11151e02db5afeef2ceda5b49839d209871713c5d19af. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2283309.
Fall in Love : MMXVIII : Lo-Hop Anthology
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9033ceb1ea2b040468451b58a86fc800f34a2072f1902fdce6c81980d2497e0c. 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/UST8K1871732.
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 0xf9b4ccba3d7d7fd3608598ba2f0613c40e18a813ea726b10f53cd7fd4a62d704. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USANG1925109.