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 0xe41b9923c270025a1f8c920b5e943f02342b2f4312c6e9116d2bc6bedbb18e63. 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/5acf5db0-6e52-4688-ae9d-4e323abb67c4.json and https://artists.proofprofile.net/proofs/artist/5acf5db0-6e52-4688-ae9d-4e323abb67c4.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 0xbee96b9edeb585478aafc082d5fddece85714264b0f67056459a1641cb5b58c9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:42Z), 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/QZFYZ1920320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e487ad61d7fc8a9f2db592bb08b41fc10422c2658fbbdf92a171613296a908. 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/FR59R2147390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266ee5d2c36c60d35c0ea0ae474ef71213078eb67e314e195928c8164de7caef. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/FRX202136489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095984a3722abdb01297434f8a7da3831f8225d0799c6879f9092f27339061c7. 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/FR10S2267600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45421eec6fad335e856734d0f09f4c49f001bbb1ef64a6c70bf4ebe0c74f9106. 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/FR2X42287338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8b9355759b4538c562683d79e6e41659fb1451fb123b021187850d2b4a879a. 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/FR59R2264406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b6e1c4b69d85998e9d4c005992ab675959890e733fdd4c42d00f75052d1764. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:42:18Z), 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/FR59R2264408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cda4e3e64c954928433b5637ef3e4560797b10472fdfb2f4c8ba09027f91a7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRX452260769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a0a1bba4341fafd83e6760559c851e16167568f676cf3acabbf690f9d8d5a7. 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/FRX872274654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dc1fd87d965677644b6a92a2edeb273d7eaf63706ebfe31ad5e3356928efb4. 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/FRX452474357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48a928a61e80a47e79266d621c064269bdaa419b8b1aa77e51116fefcd5f8a6. 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/DGA0R2448632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c891b34e9b35dad052ba28886e79b91cd2205158650dce08224bbdb39729dc. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR59R2548862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6577dd1ab0109a78d99607460b5969347739ab3579e1bea21f2569cca5aa464. 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/FR59R2548863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2309a0edd922112a89022785f13e321993a629708e69840b25561698c48a33. 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/FR2X42548302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cb7c9069f4af1fe7ddb2e489ccc4387180ddf642c3aa1213924a4db9cdaefe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR59R2548864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe384791d7b7f8739ba6a2273d9ba0f90190ea15fd05a75a4e86c26cff32831d0. 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/FR59R2548865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764b916d6c24a64523b9c868a451b240dbf54b69f0c920974774475b3d6ca510. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:33:21Z), 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/FR59R2548866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8e48752291efeff885d8837b1f389b143f31285ac06d742fe91de16aa57737. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:47:08Z), 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/FR59R2548868.