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 0xd66ef80e72bde05ec74c6e40ef255f7fbf860da38716da69947da83158db9801. 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/a5ef48c4-6383-4031-aec9-0ab4f986e719.json and https://artists.proofprofile.net/proofs/artist/a5ef48c4-6383-4031-aec9-0ab4f986e719.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 0xe3e11c420b7f2f5f31cf01e990b8c7366a11a290ba7c5343f03df76795b9c33e. 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/DESU21900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b5970467651eb35c8387c1845bd3ae8cb6020543569070fc52c1dc1d1bc566. 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/DESU21900023.
Ein Traum wird wahr (From Disney's "Aladdin")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8671df304f0f54cd718280578a72c94835759510654fe37bc9fa8a3110b4aba. 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/DESU21900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0d5ac9e2d266291c4add0b9ced520ec83705bcc28daf87f84d7697141bbbdd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:51Z), 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/DESU21900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb941cd2adbc149738147bc1aa59d35730485351588976ad3ef5bc8e8c0a6f209. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:55:43Z), 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/DESU21900031.
Paris aus meiner Kindheit (From Disney's "Die Schöne und das Biest")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4734525531861f1d8e1fc7f74d1fa7e227a207756aebe7058b514cfe22142c77. 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/DESU21900032.
Die Schöne und das Biest (Deutscher Original Film-Soundtrack/Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a5b370fb687eaf9c508ffd651b1209615b0cf75fc9dd28b436c7b9f9ecc47e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWD11779082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182161e9a490f963a643583d2eb34db7512ef4b9b40362e021cb024a3c37f2b3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWD11779084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ebf13def1aec7ae0e0116ac6b1bd15d5fd0c551fc06b811f77b664274078dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWD11779087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c96c786fdfdce339706b9c99bf01e8b042f4cd1b0e243afcb11bca8c63db7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWD11779088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e9c2e39516780dee587dfa4e91601b719d027f21333fd14186a0af9d3a6307. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWD11779089.
Die Schöne und das Biest (Deutscher Original Film-Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a5b370fb687eaf9c508ffd651b1209615b0cf75fc9dd28b436c7b9f9ecc47e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USWD11779082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182161e9a490f963a643583d2eb34db7512ef4b9b40362e021cb024a3c37f2b3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USWD11779084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ebf13def1aec7ae0e0116ac6b1bd15d5fd0c551fc06b811f77b664274078dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USWD11779087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c96c786fdfdce339706b9c99bf01e8b042f4cd1b0e243afcb11bca8c63db7f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USWD11779088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e9c2e39516780dee587dfa4e91601b719d027f21333fd14186a0af9d3a6307. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USWD11779089.