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 0x99b1c76eca07111e14d448c78f3388804bdace7a646771461d38e454e2ec0b4b. 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/2d63c86d-c944-42bb-b869-4514d1221add.json and https://artists.proofprofile.net/proofs/artist/2d63c86d-c944-42bb-b869-4514d1221add.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 0xfe930983967f4e6a182cea584fdef5001decf53f35ddb35dac8631851cae8ea2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:11:11Z), 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/US83Z2329565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfea31f7500022466f6ef7282445c2354b0484a26f98ce2a3b3405abcd898cc7. 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/US83Z2352086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a489a67f94400fddfae3e43d796b3e44addcb47b890873d051bba7320e5f829. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GB8KE2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebec4bb92153ebfb755d44d0f313df2b6bcb9b5f4df9334fcb8dd106caacedb1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GB8KE2400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a52dd9550812b7a8180a1b350c36498f5c78af3d175137fb51e8d7203d513db. 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/GB8KE2400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd381d114917d601a9c8b50a47c1468a1810b6b134a7e401f1b8a646080a00fe8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GB8KE2402734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735512ecf95be7157a57b14ab63e3c08ca16671dc05a9f2ebbcaa6973c172f20. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:20:04Z), 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/GB8KE2402735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b47bab6fa35b4a1dc03496fe6cb4001b69e63ecb2b3cb866491f864c786cfe3. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:05:57Z), 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/GB8KE2402736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470f05b541bacf278f4e30141f98888e6cb49dc50752c9fff22795b9735292d9. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GB8KE2402737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a548157d98b756d9c7569df9ee0ce6e7791d13022e5684a027407cb67b7950. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/US83Z2466684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5305e81e4f239bb543b28576eb6ce5d23e85d072ea2ba4e7d3ac68369fd1f888. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US83Z2490104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526537787f366056f99bb36b057ba50afc9fd8f766f60031c7f993406c8547ff. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:06:48Z), 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/GB8KE2415091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e838a91a8be9e61fd81d3375a1a92c136f062cad1b7ca478e734d892d7481c6. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GB8KE2420967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7014a133631f1604d6aaebe084c453cbe55f0b913de75aabec6e3d0ce192cf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GB8KE2422423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620d4cd523826bd72629926c500021c44e9dc6be3bc0ac88689e6d393691d5db. 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/GB8KE2424797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0778a7ef28452eb10c1bbd40dca16289926f4c99c300ed69b6c0b803b9951fe. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:47:02Z), 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/GB8KE2424814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6ee9d5ba08c389b4a16be2c66f9eed72ba2947e0d226ea2959d3e4ccddf6d0. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GB8KE2425976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82740664fc813665c5b3ebbe275f798c511f3151709bddff01080d7ba0aae782. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/GB8KE2424993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6a5d0a5afdcbfbbc0ac46a631307124ecda259b579ae64e2a49fe3488f68ab. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GB8KE2426745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29232a215dd96dd627d1e218025d7a518728409ee67b95911b6c1416d94abbd. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GB8KE2426744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334400952d02613bf9df79604426f19d8d61837071f446e9e244b040bd87ec5e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/GB8KE2503688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdab84bd4981b399b67fe7f27f9f2922eb878937181acc8cc833f82cfebef2e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GB8KE2503689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c5b8d3afb05cad77421c012fa832e474047e63c6b92a28d8d85e8e37158989. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GB8KE2503691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba58db7fde36047ab164ee6e4b10b85cbe14340af56146ccf62388ea8f40272. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:44:25Z), 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/GB8KE2503692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1d914cc84deee51bcbb7d49f179a4b5fab4be78ddb10822f7108b782e21066. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GB8KE2503693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa374d0fe612dcd3d7c6af51c1737825ed8a5402314c354df4018f0191a8f4fdc. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/GB8KE2503694.