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 0x85fe6542e25566b732a6317cafcb8f1480f04bf379d4467b16ac39d16fb8c134. 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/5024483e-92ec-4657-bc88-599ad9be1d23.json and https://artists.proofprofile.net/proofs/artist/5024483e-92ec-4657-bc88-599ad9be1d23.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 0x52e3340fbfda5b3a5f785f6d7bd48b4abca3b5e2ab9c39cecd778ce8c3f12ef6. 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/USX9P2449486.
Si Antes Te Hubiera Conocido (Sax Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a8db66c3a2a3e50f8c3b8eb49942ae895a42399d88686aa4ab495b43f2e4fb. 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/USL4R2491648.
Can't Help Falling in Love (Sax Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a310121a5ad1dbbc3c06eb259b2916c0f95cb1f1474240f0f8bdbd21080c0. 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/USL4R2467635.
I Don't Want to Miss a Thing (Sax Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe681dbb92cb2d253545dad7f7b00646d178a1d37542e8988f3af7a6f74fc28. 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/USL4Q2472969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78dd35b536a083a2d3e0b53a6b1ac426777e1a19d30044574749dff04aef4cf. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:57Z), 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/QZNWZ2414717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d91b78b38d135da9beaec44b3d4994612b79f35c99e6a16f79da2269c85c81. 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/QZNWV2420381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac6b941dc1b2bbb1e3b4159db7ed41856d93140cfc2a463a9868adb769ff1bd. 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/QZK6F2495716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9f4b4bf1532d2bc4038e788f00eef251a6e25c1a6cb20ff1cd6c27cc1618b0. 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/QZK6H2495532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89fdb7fbe6f9a65973d030020779cb10b4ba86a1605c474d9493888037bb6bb. 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/QZK6M2427452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda74dce8ea50e42e92175c7051ec4826ffd176ab91e2625a83e3b8bcf5006bee. 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/QZK6P2423240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7d27a2130466722b3d0d8a59158b3e47a20dd51383397dd5e38e9a99cef29d. 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/QZDA72416223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2617fa37807866d52416670fdaca99ab759501743a0b40cee67619819c907cfd. 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/QZFZ62488832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02860d5decb5f0e3009d4445d7538548acee53d7a6cc0de18f0f95a667dd1d77. 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/QZFZ22444431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c58599c21cee2c5fa3b6fbd5596a346c4fab5aabc90a242c871aefb88f3c2e. 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/QZFYY2451029.
Always Remember Us This Way (Sax Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1e7fc21c2700fd138209790adba6adb1579f083d3503945aaa82c8691313fc. 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/QZPLR2375764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d7bb6f581040a30694a403b46410933785e36d1138da94d16886b21c944ea8. 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/QZK6H2375563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e838957a4fd2b45ceac0db67d3ee737b11f59043de6f122343faecf2c52c7c1. 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/QZES92343358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939a53aa2561bdce446099fea598200aa7629eaec7454a76bda98eb707f032a2. 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/QZHN62310864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4daad1b4af3693abe34ebdc4e688d08865fcc6fbd23f3fc673902cb70183846. 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/USCGJ2372946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad16b3393fa8efaab2c40ea70ccdfecfdb7c440f2439025ea239a3c8e1df95e. 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/QZPJ32236363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c3033b302f3538d0f34e6db79b628e9eeb56bf94fd45c58efd0704c047562b. 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/QZDA42366372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e2079fcf01714eaa19144c4b29fb27b9a536a4be8c4fe9e3a50aa1e046c068. 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/USCGH2390990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8678523fc7814ba5c88b479ccc3e1b1c4d98eb4643f479ba3d8a712b875b7624. 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/QZNWQ2254858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802da5b535310a688e7e77ac90a4743326664cf78c794d067423f24763fec109. 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/USDY42227986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b822d1e90d2079137b671018499ad0eb1b19d3fc2f9750f8dff31d11ba8e36. 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/QZNWT2150338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3740897876bb011536f25830ffa1130e2729724ec3bc177af8d01b2aae1582a6. 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/QZMEN2110594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2fe0d04276742387425d11b3f84f7786d38c475f71337ef359b27b3184e3a1. 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/QZHNC2102655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1deea375cc348d12609fdef231e4e74e19f89ec1c1ee6dbb887dd71ea965444. 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/USHM22101555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ed7ecd3b31a47f60fb6f37c0f5299cd6d7e3b6e6e6af52be0028d6700eda1e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZES52192973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544e2c53d2b77e0122c968c6aa77ff6bb00e99fcd905c19eb40cb7d1202a80c4. 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/USCGJ2191868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf91eb80a3dc31cd3744930749fa4421dc4e7802187cc6a1040bee712ef8b60a. 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/USCGJ2134925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968f1acaee5143a5e97eb79c9e4573031661bc954beba85bcdfc53f5ad7fd67f. 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/USCGH2172568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345a375b2a513c0784fa606726909e359fc384488063b6fdb5ac0c174321bc23. 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/QZFYZ2117183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa348304b4ffaf41702a564d16591d0f47a841d765c0a25d7e474ee7b70394cf5. 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/USX9P2006257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e7f0a987a28220e38c144125defa1e5ec78c7d96418eff06d94b53cb80c217. 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/USL4R2081511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c602382caa667f90b7ba09455acae3234d9b33928226c1b38cd2bbecb98d7f6. 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/USL4R2096233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832f4675c0d51f7b1f7c9e3ad33dcb3656ac5aa96ff600c486275dcd1ea52509. 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/USL4R2096224.