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 0xbc4695192966bd281bdd0b1e9867614ecbf55c1d9def6cdb0383c94db177c443. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ad5d761-89db-4310-9467-ccb6c8672243.json and https://artists.proofprofile.net/proofs/artist/8ad5d761-89db-4310-9467-ccb6c8672243.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 0x4d7e8ec58fa3cf791a2f9f70794a3045dae7421dcd364b1c1b055d54031d88ca. 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/USQ770800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b38c99a938e50ddfba0fd96485840bf3c30dd168b4a4ea9ef00d14c8bcc8f4. 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/USQ770800082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a90a2c33b2557751c89bc44fd15173e8fd50ee63f6e996148ca97938b468291. 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/USQ770800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6412a3750eb5a2350ecf9f2c312c89f7fcc1b07bad0a29c73c2392e5769b0b97. 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/USQ770800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0b086bf06817bd7375a47b609ea249939bfc32eb99ef61baf3dd2680de9228. 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/USQ770800085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3353992fc2914a19d83c9890ef298a12348f3888f9810414dec32f3f3b8d703. 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/USQ770800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325b2cf8194f8031a78d2066ed3456f45749a53774453eaa22d928a45f39f2cd. 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/USQ770800087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3cca46ba15af3336fe7f2c79ec1bb3689a28cfef76f95d2028c17d5fa2b444. 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/USQ770800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e37637eb8185abe238b69e5449ca25af4b5fa7f057238bfaff65dba91481be. 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/USQ770800089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c68d1b26cedc8829e01abbc831fed40040ee7a96975700b797df8c0826289a. 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/USQ770800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2f5753203ad9a50dbca40f1cf40e9c23bef19c1ba862a1e59337a348750e76. 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/USQ770800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbec6c39774f55dcabaebf4a16ceedd30c81bbb273cf8aaf7f986f432959f15. 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/USQ770800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bd726624e24f22feb70a671486111ba06c7c09ff23e146656568e5a2390a17. 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/USQ770800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5d19bf4ec1ae71ba069e6ad24191d20cce7ea43045c94139da3fbaab552463. 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/USQ770800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe064d783880525302bfce14360a19e1db3b18260457cd8cd73c815770b87e26c. 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/USQ770800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b086fd40215555d69d7b6e5e77f69fc36995718b211b310de1857e3a1413cf3. 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/USQ770800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3340b5c3f9d1113fb47d50087c13838fbb885bb1cf44ad56b54c7be53e62fa. 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/USQ770800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb4dcd72948dbbf6e546537c525c8c6f283f651b8f1d0cb2a0596062b1a9414. 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/USQ770800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5731239a8405cd1aeb4bbfc048f812073cb2928143a2145524ee6d643db1b6. 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/USQ770800099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2faaa7cf4ebe3971842d2bed85ac1f42190f90fe7ff76a33147f01e7cee77e. 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/USQ770800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624ddeca5adcee1b6bbe2fec86558032458db8b0c6846bd929d44de7c971d1fa. 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/USQ770800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1533cce447a0c6159fe1b8744c2e6fe5d5dffdb9da080e1ff521c85255b68a27. 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/USQ770800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee22be42a568c369361178506d64dc7daa011d2cb6f535a6332a46db04962836. 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/USQ770800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94ad64f8fa30eff5fcf463bb8993f35f3e3425afd65983fe709b2cafb0d8d5c. 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/USQ770800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4626e010d86f6a93beb1e6c8ada97fc2a9b0e146c4811bd0a6d64068da72354. 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/USQ770800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61927d59d405b629d452c7b26f2f7ea461dcf2d762fd7272ce89d8308354b8a. 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/USQ770800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4f8dda56a2bdd4d0c92d49a9a2bcaf2a2a9e37a613f1adfbe157073168991a. 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/USQ770800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875e38d55c7e9914988225ad4eab62baabf6dff5560605a43fd15cbc0c768c74. 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/USQ770800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ab9146053c834b673077d1f93b03c1a3783d04c30e8b383ea4da01d6d91cba. 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/USQ770800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da65e8e60f4fe67e85f6f7a107c045c40452c48445e35a8e3148d005bec3ee3. 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/USQ770800110.