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 0x32ab6aca8e335e1a61fac5aad7adb5c7dabc7567fb3e8c62e5b989ec23c309f4. 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/7f54702c-3062-40d3-9916-e8d3b5087a45.json and https://artists.proofprofile.net/proofs/artist/7f54702c-3062-40d3-9916-e8d3b5087a45.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 0x60c7226202895b805a533fa9d256c39354b2c6c0be9e974e5ddec50f54980704. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:29:18Z), 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/SE5Q51822107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdae35c2dc941b7700522264678f9663c834aa26cb30c51417a70e15f724a1ee. 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/SE5Q51817185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf991e95851004571c21b714a8ca6c93232fac95ef341d276c31b1b521dc5aaf2. 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/SE5Q51825097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e640cb796e7f089735ac301f8a23605ffc4832507289c0b6ed4983e39589553. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5Q51808516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79f6be5720aaaf980bd1163d8564adecbeb6d23a2abbe4df270bee7e65a413c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:08:35Z), 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/SE5Q51816941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb1ad92759ff316ae04a8c94d87a4c2c1aa4e324486c2246fea29559b2c87e1. 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/SE5Q51813191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf093d93447a4c4ff25de75c20b276b6b5785388d1b6896b50a19a49b0de13d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE5Q51804479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe700a11aa92bce9482693441edef0d3b74a4c56fc47a8e6e34e13b2c32df1ae. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE5Q51822682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1bdd64dfb7de29868fc98836c35016f550bf2a74130dfd0123d296efc38445. 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/SE5Q51802316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca72fe9e063c1a2a7907bb93d7db9a142117ee3e08a7a3155e22edb6a98104a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SE5Q51808485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd166d0b2c7b8104e7ed5327befc94aa49f2747fe0ee19f81493f13a174ff30ed. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:25:02Z), 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/SE5Q51818437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789d5d565b2e004a9617ba9cb3fa6eb7fd98211247230fb4d745b4078fab07d9. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:00:04Z), 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/SE5Q51826573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6485da7f9b70f80ea721aff12fa7ae434f7af4e406435f8c4ea54e98cfbf35ff. 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/SE5Q51805620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66903ad67cf74f7c303085e52d6e56c17d39996530d37e599ae67516bcbc2b9c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE5Q51804582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a23760b255b1f85d8e21125a0153c7c7dd38f525a55b33864aee01b7f8ec83. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:48Z), 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/SE5Q51818625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad21a7856c3bda4785a19814c08adf445b9e1b65a244ba288338fb06bc065671. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5Q51821074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed84502e436e25f592128494bd74969bf9a9ea00cea1000d813c3f2164fb6315. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/SE5Q51808014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20f4996b5f5ca220200f325e4352ede19a27189adae126383968c4917bc6fd5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SE5Q51811802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30212aa7619b2aea78d6a7424aef14ef98b489394f354e39cb108995997c0c23. 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/SE5Q51804224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fa0e7f63364fdbb262c6f86bccafd86c5d09907a9e8128fea0630a855289eb. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE5Q51804918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae7b66781a9fff90bd54a84f34bf72f775a1f06cc6d46d04a40111c6cb4eb9. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:40:42Z), 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/SE5Q51806555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae7b66781a9fff90bd54a84f34bf72f775a1f06cc6d46d04a40111c6cb4eb9. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/SE5Q51806555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae7b66781a9fff90bd54a84f34bf72f775a1f06cc6d46d04a40111c6cb4eb9. 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/SE5Q51806555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67e392f680c1ec89088d7ae8324153016407ce62cea1944a7a6675eb56a170f. 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/SE5Q51805908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db5bbfbbe504d46fb4b8fcc0350507359cc825345440ca95cdda610f2d47019. 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/SE5Q51820614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c57bc185b6af1d4a45fa1948ca50a22d903f70336919d1450b8f3e34987fbd3. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:41:52Z), 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/SE5Q51805999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57550390908fb83abfcb638adf873f7ac2e5371801bbf61d9e4cc4afcd16f4d5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:13Z), 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/SE5Q51813734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abdc18c7bc427c76df92175ba90bc72c045ab180f330d974ea1aa049d9e77e3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SE5Q51823458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aca04898919686d3fd127e37b71da64987d7c6a6878e27dc96c495c5b1ec19. 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/SE5Q51816818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cdf9d8e082b39f26ff4280e2308929a15e6d6df1a1e68a9eca22ec0fd03359. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:52:50Z), 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/SE5Q51802371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbc2afc9abf06f37553b57defa8fe3902f163d9cbc8ac1012d5f446f579f629. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5Q51808561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa733a952cfa855d4d4a12b627642d0b3510df546ffc81186cd11ac0797bd0. 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/SE5Q51807794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683fa2f633bda9114200840be5cb6fe18e4378e342c819cefdca241cb1a1e0d9. 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/SE5Q51811132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cca75bbe43e87486596d778056893f21061b5ca31ee2cfb631a1664970ccd6. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SE5Q51824984.