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 0x21bd1d2ffe68ccc1c0473228c42bbb44d5eaac8dbcc5f7b50d27b0f25e280095. 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/0951dc7e-763c-4aed-9ec7-45bc11669fc4.json and https://artists.proofprofile.net/proofs/artist/0951dc7e-763c-4aed-9ec7-45bc11669fc4.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 0xb3a2ee426327f0625e12e38e20e6f2b87cde5088b1e45b630b0da4999ddaf401. 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/AUXN22280803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeead5e082cdaf57f9450526acf43924659277a5da0031a511b950504d8d19e12. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLYK92200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c87300e86de60b79a7d97634049320e22e46921fe61e0f15c6d4d5e1515a266. 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/BE8LH2400156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078bd44a5e748fab5561d5925205d7b5846b5f06a81c4809e8f88a06c05a3596. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR10S2431380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8296cad7e03740093a46f45dfde3f891641a9a38552007c2badf73dd678d4d2f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMER2357874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42da865aa6c252201f2cfa1f3003d945643d96c26de74d30f563b15d594e2346. 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/GX8LD2355276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52417734454253c35acb4b2c2f7c314033aceb39264667b594073dfcfd88fab5. 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/QMFME2220880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fa016d1f7fb462ebb0651b7b65b5c893788a830f272b78b4741b2fe2d5fe99. 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/GBLV62208113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfc823418f9cd15fd853c98104aed98ee6be8ae0afa60cadcc447492f5960c3. 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/QMDA62248643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a46bc57d24a0a543993a9022fd672b32ca723bb1ef6bf3c0b365171b265413. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMBZ92252423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4c7ca649d334ffd22983dd669474302c7b1811c5cbace6bb25e0d732aed759. 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/QM6N22284463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b77d847361790f399b2716d9f916ebb443db3247b2f5947dd687c8c85ab59e. 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/QMDA62188638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf469833608360f1d3de3252ee6f3571ecae103c582a29f111b0e3bce6e83cc11. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DK4YA2139601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e7f3c3de95bd1d73bdf6a9e7e9ced3d4bee5175b01d2f734fb8659f5a2ffc5. 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/NLZ542100268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb517b6bc62ab66370b651cce05cdd9b35230dd35f80a31fbe78947816b599718. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMBZ92020407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597c8275760827b98660c2e54109b5f92bfb6ecb67c6eff708effb86038f19d0. 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/NLZ542001259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11129596a1593571a64f91f98fc6c28f33cd3c10219dc8bab75d943f66b46088. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLT2H1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4deeb26ec623f1bbbc30797cb4c2f7960380869b5ce7628b5647658b24439c5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TW1953349.