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 0xe6f438a009c4cfb332f6afe9f28aaf72932ad96338f3e9385427f443485c3c01. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bb3e54c-4475-41d1-94bd-58fae13f5d7e.json and https://artists.proofprofile.net/proofs/artist/6bb3e54c-4475-41d1-94bd-58fae13f5d7e.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 0xaf208cfcb7ea35ab42c327111ed95668a11a331f192e328766e672e2c879df3e. 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/QM4TW2483060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cae1522c71c5bf1dfd8a2024f675bd4006cada7f3ff0b4c17d0887c70d90163. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM4TX2486733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f5daa6951055ea1ede56bf6254654c7777a6d8f35101bab2f6d721eab5865d. 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/QMDA72339322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf208cfcb7ea35ab42c327111ed95668a11a331f192e328766e672e2c879df3e. 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/QM4TW2483060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfb0a168210a68b05cd8a0ef1583fc395b7be0f487fed2d5f488599c3bc005d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEC1936388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7789c1ea675869913bd52c7713e9c1628bccd503577b79a4bc04c52e25a60b6. 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/TCAEC1936393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2a2beca78d07339054a27c66c024cd8844a6fc5e78a8458b1c1e22792e197d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEC1936415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eaa9896c31b5e522493e2bd3535ea8f0b2ae9b08d05d762f47ca302cef583e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCAEC1936374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee336d8f67cf446948b8ac954ef5dcd2ab310fad25b2fa0ef1ac22da7e704e1f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWX2328249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6131e95157f816ce90d59beae2ee31ec50a480b865a456c18666132580662890. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEN1943485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf513bf99bdeea48e2ee2f5ded621c3b18819c2c971d06ee7c0cdcd8c35c9ed0a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN62266047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2489729db0ae9c764f41be9508da34cc98b0cd3227ffa22acbdd576bfab36b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN62266048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09889c992632aba7a73d0ae61c214dcc8f153ce9e056fe448c2bb71effd56ec0. 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/QZHN62266050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a44e3509377ee93bfb04739cfb08e04d033ac862733c7b5231a8c7e6a30c978. 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/QZHN62266051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505c6003d3809eaec9fadcfa1c7da5961facfe918a48dec276fef6e061fac525. 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/QZHN62266052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38985692522b37a2fab63a3c9d0b98b6315eb8470e9c23535ebc203c43d18634. 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/QZHN62266053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c50d3215014eb8454d9fb38e3be67764671beed56532c3715a69b2a6e06b061. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN62266056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd54b2c0b7e9f7b35ee98d73122839727940114187a8c186229fa4fbb328780e. 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/QZHN62266057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f43d3b2f5e81db131d6d228dbc33a72aa214745a17f3b66ce6057ccc34d901. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHN62266058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c432690d0c00d281cffef531cffece0709b962b880948bc5038a048af3b692b. 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/QZHN62266059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01006f8630d80224adb8613ec65010be088545d488e7a0839995c1ebc07663d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEK1905030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1fc7cc9c6bdcb21e44b685827f46f0466362adff8b017827198c775c448f49. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAEK1905068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b734109f6ee2e0cab64edcdbbca5f21bcf37089eb1df8474fe6677a49911d46. 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/TCADZ1802221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38aad676a3e986820e50a59b0d9b26bc84774c9762b99b552b6d2d4d48f676d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADZ1802258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41f3aecb43bdf04956b36ab96d62c8b871965a47feb912e881ae4fcd75b83c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCADZ1802348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb5b538514f21741ad1c50370d4b4399cda540b05f0e5d845d7a843d6f0572a. 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/TCADZ1802368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178be61fb38dff6b96009183502fe620b83a287dafc8377ef3823881691448a8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADZ1802369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723aa9b20656689e70200ff880ec227086e7aeff508b5b714952a956c03367c1. 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/TCADZ1802373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7da3bd20eaa1c9a563e3be1f483d2cd11b8da2e30c4fc3f6222c0688e1317f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADZ1802384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aca50a3bab805fa743366452fee44890a6a5dcc1b7a556d4bfc37f5af70c50. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCADZ1802386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6136a893d4e0a017bab22af67c1a078b2c71d293aea4344c480f244d16bd6d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCADT1857679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d0a20949c4d7f05d674d8219dbdf10f840a0e0bf04e33834b09d632b2d330e. 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/TCADT1857682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ac6afa13a50350797c3651e892a41e64e3dfdfee213be12221583e36eaaebe. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/TCADT1857683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e416903e2f89c416b9f9d11fd77e8c8cf03a970d8f7ab35f4584baca7c27e0e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCADT1857684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879e37e8ef8077fff66cc7ab15aefbd738314f5ae485ff16bbf905ce0ee0f168. 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/TCADT1857695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be783a631af68ed99034aeec818c2b1d2a28cfb33314ded346a3f633cf816f1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:12:39Z), 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/TCADT1857697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf22fcded13550279f879ff9eb3869977a2891255d6d3c4516632a4a06754c27. 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/TCAEB1933948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27ab90f480e9ae148da0008bb62a0ca49b32ff3dd1e9aa92ea96e3d04e73f2d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAEB1934024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093bbb8e8c430cb3359706866ce50e9d3d1144bef69ed899ec8fd2ccaff69191. 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/QZHN92517635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d5d2882a180577f9db3fb528c059d50c5a9ae351815b97574db1e5118f1116. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA42511784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cfb334e4c9d38c638efbd7869916e76e45d1e68300cbb1ef130df54d87b24d. 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/DGA052336618.