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 0x38ad4e9922fccfdb6190c56b1b6f04ef8eef136dba43b5d059d6684de990708a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d14a4380-642b-4db5-bc1e-91eaf320c9ea.json and https://artists.proofprofile.net/proofs/artist/d14a4380-642b-4db5-bc1e-91eaf320c9ea.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 0x03e848d10c62f986522b508bc336f97b1e067fca94d30a70ccd4d1f324e7e414. 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/UKZGC2404767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05e79b11f1f2acbdb3bceb57fb31718044a92e9f223bd336ec0ac48693a4da3. 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/UKZGC2404768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9d4d5982a631df6d18644326f9f6925f58e09a65badb7fd788f0b7f24a6e1a. 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/UKZGC2404769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86be6a06ac22ed75d33f99f880b7ca563a9a69f8f806bc8eb910013ce25b3166. 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/UKZGC2404770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ed20dd15f639730480b02d15b0640c6810bbd75e3d3c48991200bff3294c92. 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/UKZGC2404771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931a003974c6a603381c6904fde14f327df39dd5a7e345fbc5f7415d2369aa21. 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/UKZGC2404772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa587d224b88f2ac5b7fc8978eb5b0a0329e706cb8427a721cafc1bbf484ed96b. 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/UKZGC2404773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f7f9e8161359766159e5874095ce6e2368c70ea8c6a4bcf11aebac27a2c83c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKZGC2404774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7c0bbf862750643986b8f602ea19523cde12e33b013a5aa15d2ea372cc962d. 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/UKZGC2404775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b08f4257bff1fc387b7b5797cdb70b6cc2ff38dcd156a285ab6a6c30642712. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UKZGC2404776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ad49f4aefbfd51617bebaa91cb8a0605c457c714985ff7c8b5074ac6f0cf8f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKZGC2404777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584841226c81cb1e805b3eff6b89374b19aeddb116dedd3a617e9bae5f6f9dbc. 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/UKZGC2404778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0e29ca559482b90772ffb5f3fbdbf6047c8c0a0d25ecf951481c339b70db4f. 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/UKZGC2404779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e4a40cbfcecf6b9c1be3e26e3cf7027084ca2300c1b49ebf7c42ecd41df32d. 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/UKZGC2404780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8601436c9694373fc24f2c8e650f069c788aac46017685cf108e23c2c6f4eafe. 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/UKZGC2404781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5a0059ea7bc9677077502e0ae6ea866b644d1bd22346908440d812ca3f7933. 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/USANG2240198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c575154760b875e9eae46997847dec17e0020a0833d5a5e6914d9bc2c13351e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ72408125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48caaa36f6a10825d859240b91af7dc9d26bfb7aeb6672c3ff3f58cddc75765b. 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/QZFZ62434939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1104ec28782c36bd3a82cb2c97a246a96ce6fc85fdcf46a7bff08c6861accde. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPLR2225157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8480a5e6fe21329da6e570090935e4d7eda00eb7c5dc023e7b72ca5d65e14f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF2298985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45173056999ea59ed761868451d4a9a7e6f781df8848b404aa34afeab2e22f23. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWS2244433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a4d90aa32bc315e0419c0dd87d046d793015b7ba6bb14e650c7e3db24f92b1. 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/QZNWS2242765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4832199a83adbae42158e7e4c3afc1854c8738d305f889a64a709fbc84726094. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR9Z62100976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c79900f1adc4fbba9fd07db5044832b1a3c276559ab335412895f77bfb99a6. 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/GBLV62119348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf174d1e759fcaa47e73855cd6e57fca32d7c8701bd5ec5614c2d30492dbde815. 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/GBLV62119349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a2821cdf02bb0f52e7fc6447bb92e7f2b4b562f3aa982fc946735bb741dcbf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWR2364192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d28d0f80f81b4cbee2ce2523a1d1044b8c4aba17afc4cfe2c0467525e1f8ba. 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/FR9Z62100974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63d39b1057f5beabf76362e88b8d5ac9ebc5983a39ca86461349f01f1636700. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US3DF2237930.