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 0x5df370ae13a82ba77e49a168207424ea3ce613981d751894deec7ddef1734945. 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/88a37f68-61e3-4a66-8906-ddf323492670.json and https://artists.proofprofile.net/proofs/artist/88a37f68-61e3-4a66-8906-ddf323492670.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 0x7fed09182fd30882abfc5076e32f51b1987166a3dcd28149e3eb3c3b04dd8ca8. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZNMY2226583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3e92cde4c862c2aba9127205fdc5c4a093b696c776cf3c2549884fedd73f18. 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/QZNMY2226585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe757edccb1230124fca86824808144fa5dfad0f5f1243f4e027df6c772075933. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GBSMU7941719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64b64de1477984a78a7921b1f50503dfd065a73d83b1a4818310e3774d93571. 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/GBSMU7941721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0bb62e1ca23eecbf2841fd44604e97d6e20bfae0a9c79bf2ce02e8d27ccab6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:03Z), 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/GBSMU7941725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d46013a67bf77d47bf88a56e2daa8454de4a2cb6edd331bf7154cca842f6b8d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBSMU7941727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ef789615490def9f8c8dfe5705e01485100fa2813169a384c6683f76ec3811. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:41Z), 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/GBSMU7941728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4940c8a2fd7ea663e0f380304265d91429f46ce9ecc5a93ff818da92a5ba1cc. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GBSMU7941858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f38fbd192f306c9bab543964893789aadbd68abe6b74a7fe299acbd53b50d9. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:48Z), 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/GBSMU7941859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc8c101dd1577584caee3002a8d0719418395840c1581bba824c9c8bfc68d78. 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/GBSMU7941862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245c3eef892e0c12ba87fa9768fad9ae51add33806efd5a629d40883a796ed92. 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/GBSMU7941865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0ddbbf08e9937f68c28bf42ed0544c8594e61e0791e3a890c61825c8c3476b. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/GBSMU7941867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eddd086858082d437d54257b9b9b88f958a2d74489a7bf6935c7a19e60053e. 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/QZNMY2225330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549824722d0ed440f8a8a7140aa670d546d1e540a4b17eb057739e5aa6ea1e8c. 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/QZNMY2231995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e438fae7efeff61e6c08467f9b35741d64cceb219b572eda4c8f1c9ca0ef653. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZNMY2226765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964267ef9330fec84b54f2e7f66c6f0410a2c52ba4411210a8489aaf10dcd273. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:05Z), 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/QZNMY2226766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18d9ad37529fb36b350c88a10abc55df5995aa3c96b0c3a5f864177de7a0d8c. 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/QZNMY2226768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534250d068a0d34028e365bae1b74b47255246e6c24cd6fe4b7ba3c86c8eb650. 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/QZNMY2226769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01657912880fd056ee4ab226967f5c36b86bb4741b281cee1a1199731012f6ae. 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/QZNMY2226770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2688fc88f368063122d84a41cf6755ea24732ef357b5a310148bef054186b7be. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:55:52Z), 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/QZNMY2226771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8028712aaa7a9bd165b05f6bed5d8df5914aae19820e9b64354d75a811b907fe. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:56:04Z), 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/QZNMY2226772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb424c57a36069084afeef4ad961f159a66c332d0d63eece3828d5d6d59a3c90f. 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/QZNMY2226773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bce6e391ab97f499be223fd58f7740a8517f64d489a866259e355db8344ba0. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:41:43Z), 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/QZNMY2226775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870713bb43b18f120b5f1b0db79bdb4634e3113af5e1b6e3694ecaa475ed2a85. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNMY2226776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60db48554c1dffb0e1c7c2924b4fe78e97b35e75d2099f2a60aed4ab00bfe807. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZJG52388377.