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 0xce31b971abaf78e59cdac88399be29bc3c6978be175a9f4158d9570897d25453. 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/08cb47e3-32ab-4d2f-859c-cdf5780c3e82.json and https://artists.proofprofile.net/proofs/artist/08cb47e3-32ab-4d2f-859c-cdf5780c3e82.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 0x1d02cd099293343ea454f500189fb5462c2dec0e9ccaef2c8cdb9e597962d785. 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/USHM20999819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fd7765e7476ca2b8a5194b9461fd220c255eca82d26ac1c9569158da8018fc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:08:58Z), 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/USHM20999822.
Saraswati Mata (Savasana extended version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3204b42cc4d3083c6ac8f8552f32fc210ba365bd2d9557af91d755b0ecec665. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM20999823.
Magnificence (Savasana extended version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7625cbc14bf0b62e500114a7c7a381a6059374c17ae3c3443a7516f09acdca. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:24:18Z), 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/USHM20999824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41f04e27fe38610bcfb31ad8f15bf963ec5cfa55c1f75fd9d7f373525c2951c. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/US4GV1401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1d96f325ca57249b10318738c008087ceab15c486538c0128790100343526e. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:17Z), 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/US4GV1401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40de4b0db958327822c5c5d13a463068c6cbb73cc6315f764ce234419273c7f2. 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/US4GV1401011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f117a8fa5c5b4735592b87c2ea2a20c387fe9ec1e131bb189ba68a9fe09d11d. 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/USHM91811209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4588f3ff54334593bc6b310b7c181f0c302292afcfceac354c366ca74e088af. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:44:57Z), 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/USHM91811210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4922ac2481fcedbf17a76b0a87800433e8ece8208c5b8f7a6c7c32aa2d938bf. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:24:16Z), 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/USHM91811215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb7a1199fb09ec86b26ba95761a45f653a94dc0ca0d9595187ac00d64fa287a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM82518281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d52785aabcc32c1edd45623bbbbb60c36648924726ee5067991b69f5a21c68f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM82518282.