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 0x907a1e76531026bba81ae7cf490b02521db70aa16233916dc9e43b1a4848c11e. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/800cea3f-d6a1-40b7-958e-b9fa3b0d9891.json and https://artists.proofprofile.net/proofs/artist/800cea3f-d6a1-40b7-958e-b9fa3b0d9891.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 0xcc824295df92a4a5d2c566f19901f716ddc2d41fb4b5cd5e3954460ec8250414. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPW462475908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d98b35adade0ecb7fa944c8ef5ccbf3ed055d98944ffcc122572ea686dde0a0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPW462475909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8d3522e5b00c9569660976565b496268bb463d883bf3def6c7a55ae82987a7. 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/JPW462475910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1565fe74fe802dc260553a14f76d4bfdc417ff4766717e2c5bacab2c469de0a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPW462475911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6ed77d797080142812de7d17b6136a549738c2df589c18ded08aa5c6b2d011. 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/JPW462475912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4059a6b7e3da746655787e65f757872809f09d4e5e0d6facb52dccc608baa55b. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/JPW462502755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfc7e5164f52e16c64ee655010adcd3392466bef48133020ca201a686b5c3b3. 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/JPW462502756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbbc2c26dc1cf6c7c5077ebaacc1beb2bb4acc45e77e8c3258d81b89236f01d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPW462502757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6361a75171e2f252ace527aff611c55f213b21304bcbbc5a05b7017b78d09a48. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:39Z), 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/JPW462502759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56da44f7df1dab5cda88afc8138ef6ff802d71406291b88b2903ba96c131a6d7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JPW462500993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62631939ee7a919cbe290c894e81bb28dda122b44f1e968656b4c28348b322be. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPW462500994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc616ae8d9c53234cb7f4b05b8d7fb5693445d89382f0abd3881f785bd0da0068. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPW462500995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055194136c6c9f11f0929881affb3aa79917694434fca6f18851739d2760499f. 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/JPW462500996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5110fa936e2714e9468c33b1e2ad787f5ba2476463f781e9db241c181f7efd. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/JPW462500997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1e0da8e5a8c5af96c8b2ad9c6e2825cb50243e8d787927c40c4b3d0c13dc83. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPW462537213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3721502931ad4949203000e9dc462ab03ef48db3beb51bdbdc15420741020ed9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPW462537214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591ee1a966b2f6c795c3e56c66d61c457a6645d952f1b8fb6850843c857601de. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPW462537215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3ff0270eb9ff64f33e590e5f84e4c96fdeeff486fd7428ff418057fb948325. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPW462537216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456920319936ed2c9572a3ca446eaca87e153127e41533da6c794b4346313b4c. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:20:17Z), 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/JPW462537217.