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 0x80d94738fd6c807d5cab397c7c3d18088dfd1d5342c7d9bb2f3dfa8f903f52dd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95f59933-9803-4e9c-aed5-a5203322298a.json and https://artists.proofprofile.net/proofs/artist/95f59933-9803-4e9c-aed5-a5203322298a.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 0x76eb53038d0ccf76457e38c66a8188ec3c329e9b663b25fc44942f5f78e6531a. 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/FR6V81028552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921c6b20a328d0247d867f4108faeef0435d195b9e15423dc7dda55cc794f077. 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/FR6V81028553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22830737a178d41ad786d0fa917343a2ca7a8d63b76f239101dbed48793af82c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FR6V81028554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939f0e1bc2e19fd570de9c30ba36b5e64b992ea5570c66d657d9b552411b1c56. 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/FR6V81028561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5817f51817e3acab41d2650bddb82aa1e326cfef887971ca99ccc668aebce73e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FR9W11204831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc21bed30cbbb6c3c08ff1174e4f46a4240878f5c341d1285cf743bec1a29408. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:27:08Z), 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/FR9W11204834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9adedf343cc897a19aedd7cde99803c4f251f66c1ba6bbfee49ee4737280456. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR9W11204829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b8119c523f1f1038b137da4006b92cedf23ff345a3390d26e81e433e4f6aae. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/FR9W11204912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ea5943473bcc5fba7978ad97a40f3e184e544f7daf0dcaa2265ba4e0640f05. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:02:40Z), 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/FR9W11204838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe44a521c170c0fcb235668851d0ad6b67a08c45457fa31c9fe2ccbd4731cbaf. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/FR9W11520551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d19e1f4fc1e79d62fae1af9de1a2b4909418877f1845fb16eebec00b0b1b5b. 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/FR9W11520549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4697b4a39fc1c4c0f0173f575af53be92c8f92cd007077b755d8b833db6cb2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:58Z), 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/FR9W11520546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f65cff47cbbeec716d66d4fbbbb74e5912173415070a733aeceea1f7801929a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR9W11409644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d5765b65b47b311b8b90422230bdf3573adeee636871cd5e0d9b41295b17f6. 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/FR9W11520550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8eefd56f02c956362953a10aec18ac07c4083c736c05f11d89e73aab2ecb63. 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/FR9W11520548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481faa1f0e575b7b6dc8d7dfc57e7329c61fc191b355ea8ed239945f15083443. 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/FR9W11520544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7046899b052abf0c7ef3cc1eb71eddbbc5c34af3edb23e220249c7fa0be4268d. 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/FR9W11520543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ecf344bfdd8e9f2583d9ae826fc026a4e950be33273502d6fa3267782f40df. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:42Z), 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/FR9W11828103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a143cf17e4fcc5ebd53f06408acacd7670396c4ded11f80919eb7305a0cbe5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR9W11828104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdd0ae2ad5792a012bcd0ddbaff12f5120c33442d6639535f70259c319d9017. 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/FR9W11828109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2a0d63ebe41d532e9ed0be1f79493e9700813d2ba25ec5d9a4980d59c3d003. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:31Z), 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/FR9W12128511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f06dbe32dca3934262bb14e400dacc73cd6d6cfcb71e200ddfc2fa0ccd9cda5. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:14Z), 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/FR9W12106641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608979b870a07f8d25029bcefdb340010353897b0ac5f7ca43e847367598b3d8. 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/FR9W12128512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829ddb58083474104294c96b23e92855f4fd77e2cabca14b5d90fea66c60bb7a. 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/FR9W12106645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8130209ebbebc8df66cb03aff9f32352793fa981ceb8e883bd57cf36db2e3f. 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/FR9W12106647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72508447387c8f5058e83ca96daad8eafd98b9afdfa92fb65001374e744a9da0. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:58:11Z), 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/FR9W12128515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88de0feb547c31b3d8ecb4feac4a5ff01704a1cd601e919f9b0aa068bcfc061. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR9W12128514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7d3d5bfd9d98e09b4b441049aff335b3b6c92d1b8acfbc1881aefdb4e10683. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR9W12128516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199fae0177fad21c599509c01d3451a725d1b0f836a11077497aacc38524d504. 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/FR9W12307404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01806624d8f31c9f1e7ba15b3b9bb2804515ff2935b97b25808d740b8207fcf3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR9W12527236.