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 0x8daa8f9684edbfd9dce1bb9a1a588c37d5160cc0b8e9d0c6952b9b9e8142bd9b. 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/b0094cf1-6d14-4b14-81a7-bf1309eb472c.json and https://artists.proofprofile.net/proofs/artist/b0094cf1-6d14-4b14-81a7-bf1309eb472c.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 0x49ebccdba80cf1b29d05521ef35225cb0f7a2abcdd44b2c18e3ee198b596bbbf. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:20Z), 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/US83Z2327496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafecb1af62a70b112644cbe280ec3e8bf60f7dc9120ea35aab595c92386f1c01. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:00:40Z), 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/US83Z2327497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e16f784f0a0fbd1d602edb21afe6071af3498635e8c20791ad901595f90521. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/US83Z2331905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4370ac29af1b601ce9893652aab05766d66a5ea5fd0c1ab3a1f5817767ff922. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:51:13Z), 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/US83Z2340887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1934c9c160cd5624ad7ddc0deda4d6242d55c71ff7037b41e4b8863d377d758a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US83Z2340889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1118d7f0b46ea8558c20705e401c8ceae2bb4dfda048d32b1ad2e8fa2df00d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:40:27Z), 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/US83Z2340890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a884acab490001b8d2fb93db2114c06d24ecc098d2ec95d852656b51690785. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/US83Z2350961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcee17fc46d96937c03e0c7ca270ac9fb5faf17aafe13a868403bde43571155b. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/US83Z2465387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47141695bdaf101799df9e94edac942582e9846b713f616384f9f35b2a07cf92. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:00:10Z), 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/US83Z2484033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d06a60d3d592041586cdcdf630b460108df7463d75a01929eba072632570098. 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/US83Z2484034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1a5721385e8dc34ac1adb95c5f4e9ea7646a18218bc383233545b43d505217. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:00:27Z), 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/US83Z2484035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ebb8128fedc0ca804775dbb4575239acf7c196e15aa79b7f39421b8fbd7b2e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:56Z), 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/US83Z2489729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6491f468736764392bab324acdb101392170bc37c6114bab55b14b110a846ff. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US83Z2411563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b9aba7e28709fb32ef3cee5caad935701589b335ed97c17bd37a472dd50eb7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:02:08Z), 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/US83Z2428105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f51b5639602a588d98ad488fbfb78bfd78a3ba2900bd9567ca24e31d00be664. 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/US83Z2533950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89715224886ea543752b91c5678c329b61426786466b00938ccb094429335323. 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/US83Z2546482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf076c07ae4ccde51ed3515cba03adaa08d2f922a2fe37e6dd68d0a8bc813843. 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/US83Z2550199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93a5783d990577a3d54865d12143ea954a8bfa769615eca47dcb759382cea64. 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/US83Z2550200.