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 0x0ae9edbe4f68ea7839917524b3b1c484638e6bea10c5e07b2b70019b8e844a6b. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30f8ce7b-eae5-4cfa-a90e-828077188b32.json and https://artists.proofprofile.net/proofs/artist/30f8ce7b-eae5-4cfa-a90e-828077188b32.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 0x53ae1b77c2b49bdc7acab0bf286ee2039cd0d5abcea8cec02e7bc5d9c22f6995. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHNB2517977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bb0c52f0e43b106119065bd30b63a9ef28b719b08d75689e26b5111a6b3925. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZHNB2517978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314025e28663abb68fc5adce6b4011ff43de95310c58868963cd0cf9dc4f589d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHNB2539027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5be0083bf182ea2c2e17772096defa2aa86f6f84c1f253d30aa4ee788c6dbdc. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:44:07Z), 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/QZHNB2541250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd77e9ee137d1a9f49ca4c3f49d69455618738fe41c16d10bbb9bf075988e73. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:34Z), 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/QZHNB2552185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd869417f790e9900480567c284203f93075561716620d82ead4800dcbc45f62e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:39:21Z), 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/QZHNB2552188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b837380bc1cc575411d665fa8e57d7ea5d6bb04e81cd6b3248923e5de14df7. 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/QZHNB2552192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3803382998a627ed77ab76fb60a6c8921c33594ea46115502b8a9152aa53eaec. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:50:37Z), 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/QZHNB2552193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fe3a9f2365dd59620ac546aa637883f7558d6649b34e8f7b1bb218ecb32467. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6Q2508312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274a7eaf1b16313d78334232c461900c76a71c70d2bdaa613a0e4f88479fe60a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6Q2510160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a0b49cd3c06d7f5736b319cf0cc11892f89c7d705dadd4c2ad274445e8b0c0. 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/QZK6Q2510161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405f048d12101d0e684120eae504f4c36076a6815b2b3066329780b01d86b893. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZK6Q2594897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e835a5282760d14cbe2d325e76fcfefd56b225801a2b5d01067d35e37856be. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZK6Q2597363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bbc676b27795a01b9e2f32b891fd0c95267c0e41086e9f6dd28df380afb41a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZMEP2586562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385bd0143f4e84cfa239cbeae626838735f4a1fb3c5a00245a7c92f38386803. 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/QZMEP2586563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a38adcfb049293b9403ac4cef91c20799a7573e0b530614e0f09d8393b8c4ec. 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/QZMEP2586566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0594bc1aa74214e782b3612488d33563cbbfcb17d46f992cce3a455f0696626. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZMEP2586567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43ec5ab9ba9b96f224f26fa24e17baba9648caa134a16eadb6c809045a62625. 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/QZMEP2586569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e110a36047a785a3e73ada2f7e2d4b66bded8d0d5a1906fb30806c1959794e. 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/QZMEP2586574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc6991db08a05bc2b0a5860827fb704cf93836483a06a5b67962752fe12e310. 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/QZMEP2586591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef85b35f9d81acca09c62a641f845182ecd4dca43b5aec5cb532a894e63d223. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZMEP2586602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b9ed09d87fc9a0c6536ce9aa0e756e12176df14db460c35c56b1ac3fe58326. 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/QZNWT2527830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea2b64654c6748f2fd9992d9b456562bc24480edbc49c6cdb9d4543fe07172. 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/QZTAZ2524536.