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 0x5d39a17ff20e8ffd0a6f43724aaa15711026f25bb08a021a66d07d395ce2d1dc. 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/5dcfc235-d148-4480-b7f3-c60ef8e59d08.json and https://artists.proofprofile.net/proofs/artist/5dcfc235-d148-4480-b7f3-c60ef8e59d08.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 0xe465bb547073fcafba493bc8636fd153bd699873857f9021444323a8739cc238. 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/QZ22B1759476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ba64a719ec89e0b82780dcea6fbbe3a3909066131710e3c1652f4cfe3acf0d. 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/QZMEM2308246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaef8e34a810fdcc76d125385034c0719ca267456f3e64219e439bd95919a73. 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/QZHNC1932586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd76ed3afc99b602a47d274c39b8565aecb8d13b65e0318f68fd59c32755ee6. 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/QZHNC1932590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff52a444338e83ca8899a2f3a9ac0871426991573374a8c065a42221ebfde3fe. 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/QZBRF1888634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb370d0f5a0ce2ba1df2fa41441636d60ef43e6edeb25d22ab97a21579bf957b0. 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/QZBRF1888638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08c8ec2fc7e53e8bd9399c82f9775a9801dc305a0bc0ab6d49a2e83041d3c79. 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/QZBRF1888639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad01b95a7350cda16d6d64853fff3da3f0840a59e1bc543dff9a19491974518. 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/QZZ7W2408280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2204d840a4fbbd1cb0044c00dd6aadbe4445ec980e279a5be7eb582c5fa3a947. 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/QZK6K2415934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68729bc5552d478334db80e9f35653311dcce34495caf687c8d76a0e435d363. 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/QZWFJ2340412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac6189f26d81a0ae30663e55927fe789165f853ae4e41e13b8590b5d808b001. 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/LVL152302696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11308ee7d2a5572bdabdb35426fe47760481aeae851efa3ec51d09356367450. 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/QZHN32211760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe491e0b0b0958ad08d26b31a7adac2ca13491bdeb55950ef8f35e95ffa23a93b. 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/QZMEM2160206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02ee5f3c9257ac460200e4cf9ed954b9465270b613c2b72e9da3e2176f3f8e3. 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/QZHNB2191169.
Nesibaigianti Vasara (Noro & Who.am.I Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c835fbb3c1712ec0f73920794a5d3014db5b8ef2de6dc230b78eda85be4aa8d. 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/QZHN31972065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4342e51de52c84679c19335925a282430e8ba43b702b04afc0b9b83e75685969. 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/QZFYX1908309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce62eada5990d6a9c2157180542d7767f1b5698a653e949e3c35014e3ba0d485. 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/QZCE61849219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ed76571abca4fed106ef9961a55fdf792f802c87eb21e52d7bb2982a25ad39. 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/QZZ7L2439634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715f3b62381e4c45ef973acab6775bfc320c0751f8ef021d1428471a64884d1b. 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/QZNWU2350300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e9a99ab822a75ded24a674ec43205154fa70d6ee3c933d4adf232626c8d97. 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/QZHN71948378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc02051cffd259161bf6eabb5254f4fdadf0230415af0db9e7f001987bc077b0. 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/QZES51938641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8037608d6d9a0b2ebaa7ed944e3eb1533d067b0f6ef9c06fddabbafa8a4fb3. 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/QZES82221092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc02051cffd259161bf6eabb5254f4fdadf0230415af0db9e7f001987bc077b0. 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/QZES51938641.