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 0x152358503cf48282208ed3eb79d48e6a8b95918dabce4288735fa603d3690778. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ad6b2df-a113-4e1d-8d29-3f9751723618.json and https://artists.proofprofile.net/proofs/artist/1ad6b2df-a113-4e1d-8d29-3f9751723618.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 0x2106085550ab2dda96e19d1b0cdf4ce8753a3b49f3044dca578c8d95b602050b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:37:20Z), 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/DEPI82500710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa569efdc46e93c402972354c853318b246b667630d3af4e004200ea5f624eaf8. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:37Z), 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/DEPI82452180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6394135f34240fd6db7eae5f88abf3cc726f833862b8f577f1e3918e9a5703e7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEPI82452179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927cfbe00591882d68e58e18b45b337bec919715a4324866a3657bf64a1bcd36. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:22:36Z), 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/DEPI82452181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553eb63b6b5ef0d77ad72c9520ec810e82d8313840148f7adeed4b3390b471df. 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/DEPI82452178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6aef85a4a1faa1a8317d50c8ec16601597365c024c0b017831eaff62f1f9295. 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/DEPI82452399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77916111b532dfe9c7bd8e90a8954b880a52db1bd1613ab5c3e50b26d3cf2fe. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEPI82452400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c778f6c47d78902d8c38dd3de1acb2a3961136cc92478c9d3ce332ae420c007. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEPI82453043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc187f282168f648e6c06820521c908207d88ea4fb48294bf9e41053fa86f2c. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEPI82453041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbf2a81accf2470af8eac4afd5418a2cdba268b0611891254a62f6bfbfaa49d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEPI82453040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ba01ca0013b9511f768f88d2e94005ae11d1fe7da0440b5bf8515a3bddce9c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEPI82453123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41b54bc65787abb54cec85a7880fca67f1cc45a542991afc7429547bde2b66d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:00:47Z), 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/DEPI82453126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5180a06b3aba8fe5c512bd51eef94ba51e20fb2718496025678c317031e5d3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEPI82453125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1202836505225511c9a1eeb60714468c09a13de350ebae71ee97d7d9da8bfe. 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/DEPI82453127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30e62792b38d3ed024223efc2d40f24bab7f875c1758485ffb41252f8ae8d3b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/DEPI82453130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7450bccc67849d13f5c820dc7e0550e1220d150a6219a32b9c4eeef972a0a3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEPI82453131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b698af715cef108ea346f3608a5f5c772847e81f8190c0367dd47a62070516e. 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/DEPI82453133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1e3d55021395d593c39ca885cb5d2fc9edceb7ca6bba309513caa5b3409da7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:06Z), 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/DEPI82453137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37011bb769ff480198cfe1f7544642e0f05ae3639ce7db44d0f019795f2ba351. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEPI82453132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf562da97d94319119fb880b9cc7f6f8554fd0c0a3356aa788cfe9335bc2c74. 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/DEPI82453143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8262eb4c1977f50abe5d086c29badd31ad84ffb01aaf3b6f368196f2b9b10a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEPI82453138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae298db95f59936198a82a91cbcef09fa3212d37211ec80a41b862f69097c5a8. 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/DEPI82453140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6605102c90990d947a66181b240a48172ef3edc14ceff981733abf462f7be3b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEPI82453141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a24283698ad655caa7f1e19a25bb4f851e46ba647d66664bd215372f529378. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEPI82500709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ef4cd484ed532555da02915ae21bf66f5306e0e89ab788a9540371a26661d2. 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/DEPI82500711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dce5bebbfe67cfa503c364d57b105aa4a2ee4918f900cfd73667e0e14d4671. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEPI82500713.