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 0xf06ff9a2b153153b9cfa6b012fcb479c1c23108aeb4d5b43335f015d22acc6e9. 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/77703a8e-314c-424b-9fcd-096beaa0367d.json and https://artists.proofprofile.net/proofs/artist/77703a8e-314c-424b-9fcd-096beaa0367d.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 0x66089234aba698e09a32306e8af699c4a8ec080920fb2a60ddc3f991dab3f843. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:13Z), 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/QM24S1910546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f20a6c6bff920563c0868e8412778deadfd033a6a47de86af6aca872994740. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06138b38926975a85a3b4ffaca7abde0fbf9a637efca04b7a414a3208c86921. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USLD91722176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d5a446f7b1b089fbdb65797926cf8559d0574b9952a53f35d137ec7a9a0b46. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91722177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeabf6a82ae2432d9fdaba83142d1535b4f2908d624c7410125d7682929dbfa2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d5205316924a6f7b7b94a501a68f0b43f8c660d82e61430781e3ad62a01cd8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f73e4c1dcf3c82212b1436eb47dbece169bc5e4c2678704b41c3713ea67c34. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1778e740ed8c1e14abf08da7a29d3c25b6f6f38e9336a8509996bab0d5588ac2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d88b8fa6f4bec149f302d27fe30e765400c11adbeac0dfaccc5602d616db28. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91722182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcd7a96ebd08523b6f6d4bfdfd9e7f8785d4bf6eb1cc69ba68f60645c758e6f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1100d605b0e3e3796330050d5b990fb3abe9e8688a247993e209d5e416ceb444. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63399412356d5d3aee8dd553c4b6e327c6c19514a172fba0e87458b43846e03. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18925ce5b3084cb3e18b1113ac750f39a40e81270024cd91ca2f46201befdf82. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91722186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42d300bd961d59f48a80cf2402ca1128291524d78bf6b6d0de85efa75980671. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91722187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c993e0e77da8d34b34906d9190fdfcc58cb99bb862eb540816fe951f0f4196. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc825e3effc942bf38ff6e0ac5a68c09d785ab0a6cd86aaf85c3f4497e780c266. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91722189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67979169a48a94ed6311f10bd8670ca30800e0d2278a0b880321a240fd81da7a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91722190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323151945599910b72c7cea0783957ac45a943ee22cd24853b7646e83d125c44. 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/QM24S2100666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b783814e451d2792ae96a8e0ab4797b053955c38f8085357314f162825922b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUGBT2214908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc633755f64e8f0df6ef71f01ce8f6256be3eb4b6ccffa3e4e4f1a1517eae89f2. 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/AUMEV2314336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd465f48b49ef853785d4c0e67eb6b4cd774ef1ac2009b80ac515a06112cda2. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:36:43Z), 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/AUGBT2333733.