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 0xf715dcded62cade4935a22873d913479141088b6943a8b67177c9456c199e6c1. 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/d7f30fc8-614d-4ab6-9eaf-e06e0f179a4f.json and https://artists.proofprofile.net/proofs/artist/d7f30fc8-614d-4ab6-9eaf-e06e0f179a4f.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 0x11b8a12b7e238e2fde30ed8ffc948e408698563715b70148b7a3d16119a05dfc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BAA052010451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086ee5ef3b3714af1b46c6d2a9fe815296688fda77510242f5edf0dd397809ef. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BAA052010455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a6dcbd7ea202abf1c3a15ff7b67ff93781fc8e633bc89200e09fc9453e4bec. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/ATR980017583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa76299fdcda14c17b92e5190b802a889bd3585b313e1541a9bfeaaa61acefa. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:50:38Z), 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/ATR980017585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e18b18b00d05f7b2004d7cab57b4a00813b12f99a1a6de444ee2f58f3b37d06. 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/ATR980017586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f73cc48d2b7adefbe36b2227a45ce1bf31ee5384b9ea2628dff6fb5b34680c. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ATR980017587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b94854da6513ca6ec816c2e246e6362d71ace87aac5eae83f1ab198233c9bb. 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/ATR980017591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e41b5b443d90748b36806300e220953e7be3679d494f59473e7363faa1d827e. 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/ATR980017593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a357f9dc558e693a6c2877423c810a734b847090383844d7267b4b3175be62. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ATR980017596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ce8a4b9850b197f275cdcf9b1d33d6addba402777ad869672ae35e14f89853. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ATR980017597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11e9284e6d0220df3663912b7f2bf39d0f7694209af180de74f8d9306780ebc. 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/ATR980017598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe1875ef4e878179061561ab6b59e8b464e9c90e969dc061b173032b373cd5. 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/CSAO21244011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c71f85e9be8d029221d1eb6d9597ec73e80956b4fcda8285b9ff9060f09e08f. 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/CSAO21244004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4643db62c5cc9ab5e4452ab99ddc50aff328f7a6a547fabd4a79c61d03fe57ab. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CSAO21244005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5064d250f2bc1cfb0fb0a1ef661b183f87796e0d70b0107817584e8c36d7ab0. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/CSAO21244006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1162579d62f4e5ddc131e3e96b417c6a9460873babdbfa9c8e44a8b6d18518. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CSAO21244010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cccbbdc0d707b5e761aefbf1a9c4cca22a3ffa93f1a170ce6eb9fe275c61d9. 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/CSAO21243803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb073c9f9f33c89859e2ddc3d6621c877ca5c1def0df1770f781c8d0b094bd49e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CSAO21243809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09055b68d40c3d5509d39f5595c521c0cf47d2f3df89b55965f971a2b166d898. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:16Z), 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/RSA221832069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff0d26c758709d068a97c8b9f5e4bd13bf6f87f99ca86cc8320817c7893e986. 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/CSAO21243802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70099ec996796fc3aea8ee61a4dc663ce302647a2b6ab151c6884096d50de86. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CSAO21243804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dc619d306360a2522eef5e68af74b0846e678830eac7a9a918a3f5374f76cf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CSAO21243805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe480e85c7c8579efc1a764909a474dd26e7b714b6df6bfae982009bf581a3597. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CSAO21243806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb073c9f9f33c89859e2ddc3d6621c877ca5c1def0df1770f781c8d0b094bd49e. 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/CSAO21243809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11422fda6095fe33aef5d3d60d93349149bf9dc3595b5e1dd4d201934e6d83ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CSAO21243810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11a91c500e20a96df2004b87ad2d2133ce4eab73fc7c13fc01e51f624bb13c4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RSA131406083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74356ccc9df5730a914689ba8d66c5bf929f20e6b81f80fff54939cac4ab54c. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RSA131406074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99674ed00f9a8cdb5f75ed0a9d8a4583f659627426c3b197c30b50b14e49f8fe. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:59:22Z), 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/RSA131406077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fb757abac4e2c25f0937c4fe2008f6dc896c44e4eaedcc856cb12c3d23f665. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RSA131406084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaacde752f58e40fd3ee8ac95c3081a64fcf5f71902ae8fad36faa89c979dacd. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:50:45Z), 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/RSA131406078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23a35600d16070c89b192dd9a88690c82a467cd9ace7a3ea499e68efd6988d7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RSA221830825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f30de65e264ea102f675147ab58dc9ba2e178f3b7bfc5f8cb2580fdfb53e1b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/RSA221830826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06c686571688f9cbf4daccbea4da2fc026887fbad7aed87f1d124b637cfce55. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:47Z), 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/RSA221830828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc06bc14ce3b9b7ce833b8ebd81eb038ead66d07b1fd6cc306565ee350937a. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:36:54Z), 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/RSA221830830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ecab89df2527d644198dc1d08060f266add25171d0d3d63aff7e3c3d3485f9. 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/RSA221830831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98df192c5db317df7c690ea38a689c684e1e9d4da094756a1c2e0c527f6cc362. 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/RSA0G1703625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b68c3cc9c1d4e3d2806be7ec1ff52a304ae028afde1542b3f050c0ec5c1e995. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:31Z), 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/DEKB72532555.