1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x76c21f0a9f45858bb00937db3b19afd066e7660f033fec4deea3aeb07739f288. 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/5f7aab2f-f0f7-446d-8b50-c1eaf99f0599.json and https://artists.proofprofile.net/proofs/artist/5f7aab2f-f0f7-446d-8b50-c1eaf99f0599.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 → block OTSBitcoinBlock must exist at that height 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 0x1587e2f0ec747b25e02423cece29cbd5311fb9ce1c22594aff55292c0f541988. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:38Z), 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/QMQY52150057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff771957675bda94c4f76b44af3e0e0203cedc42255cfe9c6bb1463a1d3527e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMQY52150062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ddf00bca1ae99d3922a306395c24e1797b6342061f3f364d9555293ff978a4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:20Z), 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/QMQY52050044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b51b2a7400f8bcc7acf0014978b1c0184b111548b9bd179881d73162066c46. 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/QMQY51250001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f279da0520a5aa6fa86b95c93eedd9f5eda3af58428875150da97872cf6ed0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMQY51250005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde99a17b9ae8ce3190f2e628fdc19006badd69e05b1217dd385d1d2c9bd56157. 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/QMQY51250011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bc98cbaed7e35f472a2ec2de8d1d241cfad291d7b619efd3ae240f83436a89. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/QMQY51450033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417aa24fbbe6cdea8b11a38a70f77b37978b4f362f0c70b385df0438d11f2233. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T02:01:50Z), 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/QMQY51450035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddba49cd0d3c58ef41a4743062a33cc1cbc0c5627b1635f872e9f0920fbf5238. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QMQY51450036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e4e163235350bf83e3b741dd14bebdc5735fac2decfa40b0de86d1b9c03702. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USCGJ1520775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb76fe8a4b9d2878dbe7115e4fa1c2a4b56bfc1afec3485ceda332caa72d6d3. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USCGJ1520779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec0009695c2e3ff3345059dbd17ed2d2f7d43503c15abf3b90376261c5d67ce. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USHM81601329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcb71b8832942371c20b949ce2f84850ca38b84a9638563c1a503b50e74de19. 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/USHM81601331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690484e31873ef3f475b51160d2da53a4858b84a74736e1b6d8fc9e708e725ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJE2575254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756c4f9eb741781a0077595295a5b7371d256036cc880591ec968fed516b6be2. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/TCAJE2575316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a61b9464b8f3a92f36cd339c7cd26b83bea527cb52adc48e7da95c51b6a30fc. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/TCAJE2575331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17b3437077d70ede6d422fb18aaff42f2b3b924f620b6686064a43f8796b193. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/TCAJE2575347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b492634943ebf23d3475ac81304da69253f5fdf9760e523072f6c09cd490fb8. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/TCAJE2575358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b08c9b4cee608cb756496aef342128270cccdce22cd2d54b786a4c5570ce3e0. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:17:12Z), 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/TCAJE2575381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36f1afce01e57ac7f1ae1a4e0669a89ee7ed194cb572e146de60508d0e4e672. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/TCAJE2575384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790d128ac8c785f4f580ee5cf765cd9ec7041a2a10d8cc83c9afc284e64d624e. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:16:36Z), 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/TCAJE2575390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f451bbedfd37ddaefb3adc9b6396b248b4acc26b9af1fcbe0773fd7b87dff. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGH1992597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8a0e5b9e19556b60bf5a10221cebb5b440a0028a38afed2a50109374cb1591. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USCGH1992598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52899e49f0255effcf730841cdd4d0161a2a7b45fbbe8fca1969013d3690f934. 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/USCGH1992604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf215d0ed2148165b3b9170c29556b510033db2dccb8fca045c9a3e77ae4597. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USCGH1992606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059f8059aa61daa538506fc374178900f4da9920022fbc81652df2e2aca22cf7. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/QMQY52150070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fd306be2fe746127fca8d596507cbebde67dc44d5b88e1cdbfcaba34ed18b7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMQY52150071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa229aa749b9d7dcfa80b55e87655f2019d6d3be68c6cf145af6c5cef23113d66. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMQY52150074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c7b4e95b355cd9d812cb9ca206ce94d5b3ecb6c89061f6f6e647ea5a6ea9eb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:54:51Z), 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/QMQY52150078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00c1fc23a478a7af62156b6f1313afb33b66734b73045f9fbe5fd5e7dbf3ef4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QMQY52550001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379338b1556158ade937b862ab1ccdf78cd81b5bfa932ebeb3d559d829f828e7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:10Z), 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/QMQY52550002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8561373d4373c1deae29307c2082270fa800d31a27c8562025f87c6ec1376f3d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:18:39Z), 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/QMQY52550003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75b82958d9c2d96956c98611a87bb115a0ed35acf086e2e8ae3f8e62e814d4d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMQY52550004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc54de9aa8f704b92494a0c8f9b1bf62e7ccd93256842351b36731fba3e8b0d. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QMQY52550005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3005116bc8ad1bbe130caaccc2b1b1efb7001ee1e382045e891e78714632a5e. 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/QMQY52550006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fdc106f79c7c3738bc5c2a344135333b61d240a957f1d49a0ef99d91c499a2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMQY52550007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0afc1b909ee7feab47b86c5af378e4b498378ce5373d26938343a8583a1c6e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMQY52550008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe676cc5cad657bc0a6400982a2974528cc27920afbe2fa48f8f7a6188f7f20fa. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QMQY52550009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6c13d150155368b3453524691900d6c05849291a17e00d261e3e29549cc083. 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/QM4TW1577877.