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 0xe94dae24d79e5343a12c01cc1108a8d9c86394bfffa3cda32fd6548d7ce10a92. 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/7a676098-855d-47b2-9d5e-092212fb3b9f.json and https://artists.proofprofile.net/proofs/artist/7a676098-855d-47b2-9d5e-092212fb3b9f.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 0xac4d8e4d58891da76bd8c19f7b42222f637cfc2f2dd52a20f45fc850bd9933a3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:55:07Z), 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/RUA1D2103687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d56c3cae25b8bcfadfdb9391255fd476b698f3dd0eed89fad390020aeb4ef7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/RUA1D2103690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047f3f042cb6b69a0340c811b8215538766832dfe082aed120cd7d6c02652b5f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA1D2208378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498670c8861ad8531cfb3a9f3598814c6066893649558363bb3e434252869936. 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/FR59R2277994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f052100b367e0e805e278adecf5c902681747caa277f6f7d73a8dfb553c48f9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:00:04Z), 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/RUA1D2252693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddce8f3de2789ed303cdbf6a98adf8a46eba2278060b37e8935811fa962cbca. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:20:57Z), 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/RUAGT2224576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21001c6aa6e6fd6ed758d8d973d1ee62a2a6a4e33db9883ee87d29747570e01. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/FRX872301623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8d0283198a6b874a5df5f6da7d43656b68885adcafee28d5eaeb34a429e27b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX452336645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfad7b5482ca6f4cdbbcc71908ceb1908f1f4e1ee6ed3e6647d522489d9074c8. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DGA092372113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf9b786cbe73cd7aa75cb532054f4e8ee74de74979cf17724bdf219e7c6e899. 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/DGA092372114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5f1a6a6e406bb7bd9262d3b6216b63171aac8d9a07a13b70ab5f8dda9e16bf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA092372118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d2ab0645567cc4195b1a75264faafbd53adf20dce5ea76f37958fee37f0304. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/DGA092372112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfad7b5482ca6f4cdbbcc71908ceb1908f1f4e1ee6ed3e6647d522489d9074c8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DGA092372113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b1a70288a5d5c54f5faa4f2a1a80963cd21cc7062b9a9f451c261ad2510172. 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/DGA092372115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5f1a6a6e406bb7bd9262d3b6216b63171aac8d9a07a13b70ab5f8dda9e16bf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DGA092372118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1045551c68bd60023d6aac0de6d52517d8c1315fdc2806378a18410c8a269df. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA092372120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebbf828b2872236333899032ec2728e8ac20e827ce6087d954cb2ea3a8b28ac. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DGA092372123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d9575685a6267a3ee2a6f8a0911cec0242c966dd8b8d57fd49e244226a4ec8. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZL5N2441803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364496095faa4cb925b51c4b8d098a88e515a3a1f24169455c808768d8315255. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:07:55Z), 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/RUA1D2498054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a8403debecd320ca7daf21c1b4eaa5ac992b37c65deaeb6f1d30f7e0f070f4. 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/DGA092455643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c61716b8f963e5895b81b78c5ca93c763a8d7d5cafaae280abc0210673ea90. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA0H2420167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d880a0eb35de915b2430d7254214eef0406e2aa20ff6b5c98edcba473454ce. 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/FRX872291876.