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 0x6261a290c8a993cdbd637c3f6e351336e9abec5e7ab9ebf87969427e200952b1. 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/e21463cd-3fd3-4c4a-b489-251dda4dd37a.json and https://artists.proofprofile.net/proofs/artist/e21463cd-3fd3-4c4a-b489-251dda4dd37a.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 0x62ac7a0a833eff96b2c6491bf726b1d240cda58833569b81433e589a131ff66f. 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/BRCID9600109.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9287bc30b53f2149c683372e10617d086b0a700f11294fa43f397430008a157. 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/BRCID9600115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efbc67bced49517f38dc22a34ae49386c16920f9dff6107e3269957bab9909e. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/BRCID7700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bee43b5ccad2183c33d58b6ab66e2309e84b98eec945d060b5116bb31e7a3c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRCID0500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd491d0451a74ef6bb2dce3531d2770860b0102e3bb6bb17ba41053a2c585addd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BRCID9600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253647352f403c2e15da8cc930a59fd08d1f13406e554fb7c4b32dcd3b15be89. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRCID7700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f1eb4d6b3438e6c340acdbd6773f191daa0b49337b53b753cd2e948a15f073. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRCID7700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7f66b313daa4f5d3d8c57cb187a2256d23fcf2a84bc547d0d1020c08b6d882. 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/BRCID9600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04338e8bb73c8f1f10e539d74a1aa75cab87e279333467f2942fbeb79ddfac1f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:06:26Z), 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/BRCID0500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d02febeb7c0dadbc4e209229b3637bf8682dad185c8cf8138243d44af99cfd. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:31:40Z), 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/BRCID0500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5e45ff774ab6e67b606ec6867451af02fa9e70c32d253771140314ab6876f6. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BRCID9600111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaee7a92302fd6246f78e2a01395a3067e64edb267465b45308e9b85eb113cc2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/BRCID9600122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7039469fa563e65a1972fbafd0cdace5c4a4b8de116b8a84522f3f7f7ce1d2db. 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/BRCID9600114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443ae171aefb584deb53835cc6a794ec11d5246048095bca8ef24155a835acac. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRCID7700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda535062cd46bf063e1e8dd75260d1c3492c87061b45b36d7dae38f40cc6c90e. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:06:27Z), 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/BRCID7700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443ae171aefb584deb53835cc6a794ec11d5246048095bca8ef24155a835acac. 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/BRCID7700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e9a9fccbc9540f8a9973b5bfa40630d78bc4c7dca7d1013ee9e95f7f0e2db3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRCID9600121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9f39965ca1d462f456728e98391d4942bddc7771c23a64352ca16e7fca25d6. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/BRCID9600113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a5059bd99e97f2a60fbfbfa44fdc34ec46adbd697d103e8e4f65b9324e6d2f. 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/BRCID0500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5f13d5058d09968badf3dc560313d965b5b1e6b5b41d2895a741285eb0fb74. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BRCID9600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efbc67bced49517f38dc22a34ae49386c16920f9dff6107e3269957bab9909e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BRCID7700021.