1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xac875c4bd5acbe5e77ab491641ef55006fc93958ac11eac9ccf7d88e71c021ee. 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/8d0c0116-4404-4f8e-8f87-94097deb0d71.json and https://artists.proofprofile.net/proofs/artist/8d0c0116-4404-4f8e-8f87-94097deb0d71.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 → block OTSBitcoinBlock must exist at that height 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 0xac6fc93264cb49ad50c6159d56809df8c58e16b49be6c6e8523b6693255584a2. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QM3DF2255294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c83fbf94aee9a2e1ad80c0e9f670094db489f38aee22345a642dbb3396e89cc. 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/DGA0M2304224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ed774dac1e6280e434308cff479ddc4032a28c97d3a87c0086ed63f09e4b02. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:33:37Z), 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/QM3DF2280623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fa4014abf4567c0181447d82a01eb802103c7791c6a21e4308156a70ab3537. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMANG2376930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba4082b0b52b6744b51a59064e16a461a8e8efe68ef2f77ef872d29ed2677af. 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/USANG2470301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece3a4dd46b285fe471a086818d09720014bd2b8018fc06a87c72f8f1e82b7c2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:43Z), 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/US3DF2533583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7354cf59887b50116ad49e235fac0ab6ffab1ba9240ba4edeba57fefa204f33f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:08:27Z), 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/US3DF2540415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf1936e48c6882463fbbe838a9bd91a5c89703aa7261bdc05e5c6f527722370. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/USANG2500813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd345004a7940ab323572228ef9ab15ad3934d806034d43cf03c46ba84baa849c. 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/USANG2512317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7040483ba8837820ec6846c87ab86cbb0476e823ffc6839ceb85426a1ba34e16. 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/USANG2512326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ae7349d780b46ed1664acd28abc2f367fd2df7ff409ae96ea2377f22372247. 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/US3DF2460395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad8d26477eab5c8360f95d8681ad04a980b8afd0c26fe296af96bbbd7046ade. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DE1L42410019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e009d74f1f3d4727993edf2e978b3e2350da8d0c2b8140cbbbfff3348d4d005. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US3DF2442475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb0c01b3ae834de654688f29e008aab310a5c40eee1e13f4af503733ceac23d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMANG2228949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e6b701abe6eb673efde1575963dcd6b245070a0e20345fcdb09a89bda4f03c. 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/GX38U2348802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd930aa4f8459e5a6e2ca88f9d4cb36a8da17c49710b030b197c0bbe5944063. 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/GX38U2356364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7faca3e7eb64af1103883dffd343a07d3c42690852dada2bba2d7fc517e63a. 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/GX38U2384299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9924c85b0853dc1c5ddb89f6a3a08babbd566c54d9e7c155d5c763f39a37257. 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/GX38U2341330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb0c01b3ae834de654688f29e008aab310a5c40eee1e13f4af503733ceac23d. 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/QMANG2228949.