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 0xa3d6f09ba73b62a64eb32200604742b81783e4a2f97143d6f5533383e66b9516. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a563e198-3b20-4b54-a1f9-04981df60134.json and https://artists.proofprofile.net/proofs/artist/a563e198-3b20-4b54-a1f9-04981df60134.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 0xbb415d249ae65c33cb622fc958e442bb183b708778ccdd2ff4e882d55a0a1844. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR59R1783182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66560626c95fc8261e1f48cbed90785ff43b8b115c80f372eeafb47b4ccad65. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR59R1783208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dbb9908621ddfe00de9f579a91dbf3ddb09646a91d4daf3ee98f2b17a75d67. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR59R1783209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66560626c95fc8261e1f48cbed90785ff43b8b115c80f372eeafb47b4ccad65. 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/FR59R1783208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3be5e523593e188e91b6c92a15da2495a3584cc7a9db4e1fb2d03b479489250. 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/FR59R1783211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17edb0774ebbe7f2745e11b21a557e5364775b32ce7a09e4da14b30d7fd16f0. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/FR59R1783217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3536fe7b263f9d913aaafa032bdc204719528b2a9aee9d04fb5f09561915f82. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR59R1783426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e249de8cf9a3c6fe1c51a790a521e22dfc2745fe167728b5c62a586dd000c7. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/FR59R1783432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa838c50f0c501e1e17f64d5f46d8535d8a23b3f0d69104e71c9f17cac625f0bd. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FR59R1784601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a9ba168b0957505b3a8ca66a0aaf917747c45f26bc62282d16312d271e19ee. 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/FR59R1784605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268bbb98cdcc0ba3b7561f11ebee35017a9f04d046a346264334a05adf3116fe. 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/FR59R1784596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08943a87a4de32720891ec804e6e3eccf44698cb3b28cf2d2056c5c401d5a76. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:22:17Z), 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/FR59R1784600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9aa89beb92afbe062cedd1b74fa3536aedf58d9b616d9ef9ee4641635e4e34. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:01:12Z), 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/FR59R1785315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb373f35113bfccf2cceab659a43d4ce476863d46a726b0e94407c91b367df5d1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:43:46Z), 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/FR59R1784655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7241c171dcfdc4a73e89b20ffcb66b902796beff5fef53acaa0d3052c6b9dc7d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FR59R1785328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374578ae5cb0975bd4092613c12e519a907e60484e15dd61a52c7efeae383c1b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/FR59R1785329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15116b7c374335bd328e9ec1a3780392f6b814c445227e15f3e78732502906a. 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/FR59R1785331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b65936d9d543a66ac423fb6cf219ea4cec86ce3fb04f1c81046d90a9237f9de. 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/FR59R1785333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5f0d4ec42929e340740f5e71e3fef856ba0342437851f927a3654af0154edd. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:23Z), 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/QZNJW2029909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8351785ac003c170287a56d2cfde7caf938a1ed12f2bed4dcef0b2e03cebff77. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ62056697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daa6910064c369a34e0074ca7541b04c5b25004d689bed4e2877f93692f6454. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZNJW2029900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e89eb8e8e9092dab10f6a10601f64d05ae47d5b72ad796a11af0c4100e3a0c4. 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/QZNJW2029903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b736776cbe8313cf4dfceb93e29d3084331b5da3d9f4e369191f876ffee8be. 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/QZNJW2029906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db76afd72b2da9c469ac76d976394d6da17c1b287ca298a50a12a4b05e398c9. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:11Z), 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/QZHZ32171864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ac8b05faea73ad06377f4de44af13af48c0a149b64a799706c2f10ffff5663. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZGLS2230647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b8553e567356522af6d5d7a816df2dc9674f182ec954bf7ea69c38d201ba73. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZW9L2231893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ed64f88e48dbc4882fff531a4220900c676b497e7fe5623d1f6b8c3d6f05f7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTVM2345476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff735637b664d8c70c001f1ec250bff23f587ffc73242fd078b62b9493e66b9a. 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/QZMZ92464288.