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 0xafd3b8b8e268534a86a4ee74767af7b9a6c359ad2df1b7a5e4d2f95510f4dee3. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae9bbb82-8f37-46fc-90bb-063cf3edbbce.json and https://artists.proofprofile.net/proofs/artist/ae9bbb82-8f37-46fc-90bb-063cf3edbbce.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 0xb0b58560cc05b1a12c1c8113febba51180ea38aa77fb5062431abf332af8f37a. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/QZDA81956787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf4aee1a307c15cc30ebf40bb3eb9fc2780571245b8c8805bce2b310e5605cf. 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/QZDA81972754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a499052593f55dc024f4f2afd071c7b3d232d4cf3445aff8c1d587f8fa5e7b6. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZNWT2193436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c6a4345e2111a4dec4db1ee09738589beb0416562f68d6cad2851a8386fc60. 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/QZHN62273216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a27af46648052ab3dbd4110426ecfd80ec18b32c8a007a50cdec1ab4bc8e5e. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZWFN2301556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517967b79224d1bf081bc164441809c316305f6abf318f78bdf7e92bc5df6e50. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWU2469749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e58c813396ad88ea8bd2cee7efad1ecfc2a3d04383d7fda47bbc688d1e11a29. 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/QZTAT2517512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348135bec484776d1aac27acedb9960c65a65477ffbc5d9fb2653c5ddb9e63aa. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:17Z), 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/QZTAT2517513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fa383a276e30d798b5b7d7552bbbf7457a5179526eeec5b9c3b34563a77170. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTAU2546253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa834d08fa3f031de6c80f2808caa8d4599180951efcfb09935a260dae4b3988a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:40Z), 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/QZTAT2517515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28140c3fb07777f5f96dc283e2a1b582267873aeaa19e0a35098f9a266c56f3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZK6N2583177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62f09330137dfbfe80850f90dd5cdd2c3993012dafccb01a96ad79355a3c330. 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/IL7192500332.