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 0x0402f27788493336337aed31b75937e5a53ece16b9fb8287cd5d1bf4f5f145c6. 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/34b1dbda-07d1-461f-a151-bdb2619d4943.json and https://artists.proofprofile.net/proofs/artist/34b1dbda-07d1-461f-a151-bdb2619d4943.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 0x9a0607c0a74394816f8d45d7c4026f79991fb53ce25565a19b457495c5133281. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:17Z), 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/SE6I32002420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfdc9ead48b5d8fde28468917268e3e0400bf8a3822d5885f9216d8af62ffff. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:22:19Z), 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/QZDA42225842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81530ef49c9e12592da8efbdfc5326bd728ca6c2f36705ac808e76329962f9c4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:56Z), 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/QZTB92263972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ede1a868b4483417b6bad014ddc1fe0461619bc2c358eccd44e06d234f88064. 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/QZK6L2301910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3affb0ee1fc4b698b512795d83f920e2f6746bfbadaa41a6fee765489d438efd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6J2313987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11949d3609c7feb76d4aa4f70a653157f0facde1756549677d319742045644cb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWX2314584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cf6fb98c9f8e6639a6a7a3364d8d2ce2a4911906e500493f2d832e7d9f1cda. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZRP42327546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1464eecdb84726d6dd2d96c9194a313e7b5aaeaad196c069121c5e20588c35b4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTAX2380113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1279e115122b542dc0efb497656c9759e47feb43f3c66b555a444400641b3b7. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZTAZ2397998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeece3b8a550b05f21ab726dd129b2d86ea123ce4458cde697782fbfbe8d21cda. 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/QZWFH2322674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd86e0768bedf17e424f85e636f76f2048817cb9a7bb5562baa8df132bc5e39. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZWFR2334959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11949d3609c7feb76d4aa4f70a653157f0facde1756549677d319742045644cb. 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/QZNWX2314584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc172b3660b2ba01be82e2cbd063f4392b2cf5309c371bd3312281c5d76574c83. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZFZ62490522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e3dc4b6f648d60821497bcdae8bd6590015799058ae2ad94363ea60fd793b3. 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/QZFZ22437686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017a066aeebb0556785c1c44afa2db838a5ce9331f0ec7682ec7f410f67f32f0. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZHNC2460056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5ff3d0aa6a5339655072061e2edbb21d6f69b2c6fb11b6e7eba487c6104e85. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZK6N2437450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a724ed94884b8c1f4451c5fa128e0bff5501495efc53f5a8163842f114b5f5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZK6H2468023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042b3b4d6658c49f5a4d8f0560d3f535a52f83387903e8166a9722d92990784b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAY2422301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316bf9a3082ec2345b2c95a837595fe3214a60179b8eb23ef27d19c9c2523d7e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZZ8A2450379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f3c6f65f685f94fcdc40a1dc222b9b15f40ab9b36091b80edc84d13f25bdbf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ8B2555226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f4e4380def7030f4ba2f0ccb64e380ba7970f5960c0d7a80fa10c3f01fb257. 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/PLC062410475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97bcdc1ff4edba7c2b94046dc8a681325f707f74c0400567e1dd9b26e8958a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/PLC062410479.