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 0x9f6e0d3866bfb11151d45565a410187a99e22c0df30503f718ef47d29bde4320. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5883291e-5ff8-45d7-8e80-4456f4f5daab.json and https://artists.proofprofile.net/proofs/artist/5883291e-5ff8-45d7-8e80-4456f4f5daab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The New World of Jazz - Naxos Jazz Sampler 2000
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 0x87f2ac2451fcab2ece89f3cacdc315a7c116769c0d55fd98cff7c9251ed88a26. 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/NLB152400793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ae6dc96b274c8aad5e297a65c47f4ad30fc54de7174d541dac4f47e9d45c24. 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/NLB152400795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b9bedc5768b75dadb17dd5a49917eac05e7d878c8481e3b2cf24f363f412e4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLB152400794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a7890917d38b1b912b1a296b4347dd3f40c9e0f2f9d70187c70c1f13541c20. 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/NLB152400796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a32fdbc9a13ae09b951c38ebb3c6d13e141f782d0cb8ad4d7f4150a0cb598a2. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLB152400797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e24511a23d699560ac530ff99456459186fb949432a8e97d036efb51c57c94. 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/NLB152400798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a40fae4ea44f264b4a3f4613bba9c609750936175277c3b5a811b2945ec114a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NLB152400799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f08b03a5aba70f83cabe4fcbc40353317366a297c777b25d8652486e9e042b. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/NLB152400800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5324da9d3ce4806c110ce06811f6dc2b2dc577d0d5a5d5c128c7f7e48dd55e8c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/NLB152400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2170bebf7d0de36f93ce9c5d787a0bf39406ed65b1fe2db52f4773540caad01. 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/QM6N21475225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78affda168d2bea75f659635acfcc08003c0f81dc322b40f27bfdfac4b4ea373. 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/QM6N21475226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6b4e1de5ee34a46ca01d9fa00de3041476c964c572f3bc888de4465ff97581. 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/QM6N21475230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6818be7bb333b7fc4150ba67cbd01511f858ce2fd65a4db3a8959ca53550ae1. 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/QM6N21475232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52874fef7412a11558bd2f146b28008c62c9a2e7abe4909938b9d6d471c7f356. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QM6N21475227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c24a7efb80d32f5756719d01c120c57adf7f075e523cff1fc9db55a454ded4b. 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/QM6N21475228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842c03015804354e364eb64482a2541edb384ce7673354e23fe633d8f6147972. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QM6N21475229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a780b1e43d4b10cbf62c8555f2c28badf970381c9945802b5ee62610375aca. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QM6N21475231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c93629ddc20a3e58757cabf01a2063993392185edae35d9215df7f5b2ac6e7f. 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/NLB151700477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cb8df0ccf8eb7bdf88a95b6d5331d87eb879d513a4f12e1694dce5bed429b6. 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/NLB151700400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354842bc2548ca08cb0a8020b1bb9444cac5b00341cf3915c89d3d756d544bff. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLB151700395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f6058b9be842de77ead91ad49e2d52a401c9e5ce1a174a785b9cbf1a4c409f. 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/NLB151700396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84be54f28f51d5222198bf54b69c863cae38b901a8d4b53f5c3ddcb2215d7da. 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/NLB151700397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd032ee14349af6be4cbaf6a2a76565365ade73bc5549c80e0ef26ef5c1fd4266. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLB151700398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b94aceaa62979d008c365b95de3ffb205a4e85fd5f34515573c240003df0a. 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/NLB151700401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7822fe1e8ed1f87f8cd3995014ba21765d4e624325e047aa1d973bbbd565e7d. 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/NLG9X2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fbe3a031b06365472fe276c3e55d82cc403ab406edd99cf259c73549195dc6. 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/NLG9X2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43806447606d301824fcb2c44ba89a799538d496647222bff4b7a09da6ab9720. 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/NLG9X2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd732a692af164372507b6293b685a8c2f3306a7b16ee424811d50840a534fcf3. 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/NLG9X2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa735ddfdd59992cc72a9d99cd64d7503ce8694f4b31c8abab1859b1c7bfcfe71. 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/NLG9X2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc7530423ed1003c12a6e61df5f8bfa0c8436b337e8a9f650d26922c9a36452. 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/NLN911800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf77a256eb503a5f3c84f0ac2b9d166b2848d2f5f0028261b0da34153f5a759. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NLN911800043.