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 0x08d7c91f9ecb4bc1a47a8ffc75921c48a9a4049140d363f9ea2704d114f889e3. 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/cf77ef1c-5284-4ec8-8175-dfbfe5abe7e5.json and https://artists.proofprofile.net/proofs/artist/cf77ef1c-5284-4ec8-8175-dfbfe5abe7e5.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 0x794b54843080e078bb320de71e1edc5d93452d8888264b65c1c0c22e300577a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAA010400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e00d204928a62ec53101a94537bd585ff396d27011f2fb93132011c1dc71086. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAA010400430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b11b9d02b999128d138c7a7e2a4652487ceb8941f05105a45b9038d2e094d3. 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/ZAA010400429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3cd0d0875d41d68c12c044d384790b983c1ebecc2712824515184f7b305104. 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/ZAA010400433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86c25cbbc6b8326a50a4e032862d19d88cd41f029ea4b992207b4faab892ffd. 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/ZAA010400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aedece3d607f602f05fe6810484ca878d0318babf766c3c636aadb1b257ef8. 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/ZAA010400435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4972350b2b037aec630a1920e35cd130a49761f8a0942a3f25244af021da66. 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/ZAA010400436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081e0fc08f6be12614b4fa970e20607ae325a05085cf48c793bf91c20b7f67a0. 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/ZAA010400432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cba20bc23384564710c17fd45b493ce31987f4e2299e06cabc6a8f315c2bb3. 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/ZAA010400428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9333067206e1f289d005e7194f0b4e7e7a910b4012e3dcf1dd67e1637b3b7e1e. 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/ZAA010400437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa171e06a01f8d70d28c87e2532a06e2d623e6ba90c58d7b256d8574c4488bd64. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USC4R0613961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4aed38a84a294e5d7a06d6cc37b2efc04c7efc31d49ed4b49ad717c495ac54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ZBHLV2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d905982ad48f03d191958040b258d013891beae2e89f735be21c57df20f3ec2. 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/ZA5YA1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d2ef45dddae8ec7be69c347526e4d3f1db6cd03e614affefa06d6086ad0f32. 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/ZAVDU2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc031a45b4ac54cc75df0257fdf6861f128d68f7fedc5d495f10047d2453efe1e. 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/ZAVDU2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a589c2fcbbf5f1a11118b09e1641aa94de2061a36494496c183200f66189652. 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/ZAVDU2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd59527679ce89fed4ff05a655bda08b1f81fe4ed9f572059bdcb363c8ebfd9. 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/ZAVDU2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491bd707a9e16f4394b23a7d18b477ece1c2b73677cd8074362ea7615c46ef25. 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/ZAVDU2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2214ef8690723d727a956157373ffc777c4c5e2b1c49d687b8c84b61b19a167. 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/ZAVDU2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869430ad2ca9372944d4b91c935827c70f016e1ab5f0587752ecc921d6296c73. 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/ZAUM72400814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda9341f027fc41a26151e981bbb64eb5abeda047790dffabc92365bf6f21ddf. 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/ZAVDU2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ed65cf4c822a3fcc9951c5bcfb86814c8e067ecfa1ba9689b29854c5f6e86e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAVDU2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3751a09a31776f3611be9ea4290bcf66d6e341898bace6effb53e199a7f996. 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/ZAVDU2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98eb152f62c62b8bc57ed615680485685531b91a3f9d48b4a1002633dca80b28. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ZAVDU2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de1d360afe6dbc8673f6882bbb5519a44a9a31ef8aabc0334732f7e2dbbb3cc. 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/ZAC059600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce23d60b1a26395365dd38dfb480c1947aa63e9a68ee73186f9bd7a259b67f9. 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/USC4R1201125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c696c883ebe09580e9d5f710ecc5c56f33541dd47c510c2df035fc0f9417d62. 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/USC4R1201126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45a6f11d1812599cea8a6e66d893d094def4c2006177f52dc2c31e6297d682d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/USC4R1201143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754ad44fcf8783ddc843655bdf51497071b1ad9e9d0f2a75cf28a81a6ad2979a. 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/USC4R1201146.
Mzansi Greatest All-Time Megahits, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad8a265feaacab2769d806a106682c6bdb3a161b286cc7bdaaa4adbc06105cb. 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/ZAA010900353.
A Cry, A Smile, A Dance - Edited Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e984dd83abd3817503e76854b48be323134ec5e5e2acf11a5fe49a02d263ce4. 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/ZAA010300119.