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 0x14b5d02dafe296b6ea3e386e88fe7dccb3b2beb46579513368dec7128b7a01e4. 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/312ae4bd-3986-4d47-91f7-90aaf1922b06.json and https://artists.proofprofile.net/proofs/artist/312ae4bd-3986-4d47-91f7-90aaf1922b06.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 0x2faf0de3ae0488ccc6f63ce4e52732ea701fe51656e261d54f8404c816202935. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:52:35Z), 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/AUCEJ1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718d7cdc19fdd94e4471c4c6ae70b759da6c58a61e0ff9ed7f291efb049e3f32. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUJME1901539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5194eec28721c369efa866cb32e6f04ef1ff9f3c3bcc29661d82da10169c54e. 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/AUJME1901540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839385b164c118adc958a51fc5023ab0ae20434f12633c2ca6a4d3890dd140f1. 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/AUJME1901541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430e5df07027e0b1c100a546e8b098da11b634c28d0f57d09f864653fea710fe. 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/AUJME1901546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d534ca6ab9a71a5d4d5efeaf952869c8ce934cb801a0ec517a67d46c859dd6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:32:54Z), 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/AUJME2001629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa811e5d193cdaf4bd5030dc880be2a96c18335c6d19c4e1643e051511e1b00ea. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUJMR2001822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2103f9e57c6814e9103fd80616333b19e9fec879f55072fd16869702c8e98ab6. 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/AUJMR2101879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986f01e5f36038067284b66d0db66862a2366d10d83fb70bff6fe0dd21eb8946. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:40Z), 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/AUBEC2300637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1fdca2306df0e0f672b76677f9d3f69c39722dd34f9ffdcfb5a196a70aa6fa3. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:54Z), 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/AUBEC2300636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961bf359a568601f8334ce449f3c39f56dc024ef521991940edb4078d83e3508. 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/AUBEC2300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca63dc281cca150deff00c906c805b3f91a2f674314571bb48677323fbeaf4c. 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/AUBEC2300632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48270bac97f3f5884fbcb67c2d85c94fcf6b6a10c157d22f93577157c47e79ab. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:22Z), 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/AUGBT2320295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e531ef888c8efddf9753fc44fe0036c3c45a26f5b5162da0ea52a8bce76d9f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:10Z), 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/AUGBT2320297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a02b6d52e7c903f10fb1183745003fa43918f485eb2487cc2c5e54c9e2f1b5. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/AUGBT2320298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b598100443cc8215f161010897255f24c2010bcd2f2ba3b12d0d2552325a36. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/AUGBT2320299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce0c4fcf8f52b562c37f1b4e0a76f589847dfc2c0243fedb79bc371db48d9c7. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/AUGBT2320646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ebca941eb737118d14e96c79b18bd50e44bd8de7c637561852d44737260d0b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUGBT2320302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ef31c70cf2823777fe3d70f2428d9019b6018d9cd091956de03cb923fee5bd. 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/AUGBT2320303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bc1e0b28fdea631c9170dc5637b6dfc1d64669ea7be1b188cf8e291e60a504. 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/AUGBT2320304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f984bcaa7c2b9c0b749beab066ba5fb7e76ffe8fdd0ae8198272cc4b579fad. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/AUGBT2320305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3fa1ba74c650f6e25dafbe5c2c57f4e1283715e9cdd56a8315266cf4730b10. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/AUMEV2404423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279e99c5ffc0ac3b0d267979fd21910358d9af3959658f3f1b21b3859eeace7c. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/AUG0H2401333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7176593d0aa48d5deb1ec2e94e9784f18389212e63107fbdcfebb3fbe96d9671. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:37:13Z), 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/AUG0H2401406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769d40515c313c8614bbaa39075bd00c79c8e8d4677ce57eb0742d8d1051c436. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUG0H2501321.