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 0x5402ad2cc769bd23b66b35edc8d602ce1a9487aab1c425ac5dc2b112b59d41ed. 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/39afb51e-acb7-4435-af63-91c792324cb9.json and https://artists.proofprofile.net/proofs/artist/39afb51e-acb7-4435-af63-91c792324cb9.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 0xb73b7902988c087bafae9d00c559faa97f82d6f7ee9b08278af173f3931acfc1. 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/TCAFF2011591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aa1fcbb0ceb4463d6ad475884c30bce829189937abad2bf1e13652b40937ca. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAFF2011599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5dc78d350dabfcff3b8e290fa4836a1947632a1c9949c7161b5b5e2c843024. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAFF2011610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858c2ce739ee8f24560dd4fdde96cc0435db21085e112369d868fd1ff934b355. 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/TCAFH2096051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288a513b957de55eebcd29cde1a1d2c1c424e4736b7637da6feb02b93e4df25f. 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/JPU962000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b29cb138fd678c05dc8710d57adf1f75f47837c6e0b87f27898ab636959ada7. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/QZHNB2144463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804f276d0ed745e0dd594507266866c563eee243e9f5ba45b4347ffe7823c103. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZHNB2144464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3708016b02f312fa92c1e6a4472a7c3ed85d55cdd97ba9564bd22a61be783f. 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/TCAFQ2129111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c7cb61db629bc30c9e8a6981eeb035af5141e0782f14d2f2a18f0047f9a95d. 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/TCAFQ2129117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572091a4a868492dd93bfe1321b3903abbd5fd38c957a3a4e105749d0380d5a0. 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/TCAFQ2129119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8075a502d3f8e9727a684951122b357ba50652c80b9f16423b9da0a02c9013. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:11:17Z), 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/TCAGC2202999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0e9eb5af60a3bfd24eb2d3a41adcfd3af92a46232e6c49fdbe0fedfb5c0ca9. 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/TCAGC2213220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779445af0fae05241abee1271d93d403eab6dd74ad982c5d33457ed74caa194f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAGC2213270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e113e08a92e311a36af9fdb265d3cf24ed0b6c8fa0db7562f0eaebd6463e96. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAGC2213350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd39d84ddd711e43407841db80b07d3c5e7de66193c8af618b506787caed7ba4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAGC2213365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe046026e5244b6fea6f7e93b96f84bc2f022f5a60b48b103ab82a59e54a820cf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAGE2251763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066833385e228a9f8e49510ba94daeac3d32ea1084cbad2ebebad06e1d7bd526. 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/TCAGQ2254704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179128e7abbba63630ca3fad71450179039079b9165f372fbc10eb681e20a0b8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:52:07Z), 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/TCAGQ2261094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eab959b81d9d3e00d1b58d8f1c7f940e7b0826500a4f56582f22c8f8949966f. 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/TCAGQ2261546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88b203f829f6ac6f03b33c55a08b222da63695c3b2f49271fd93d8d39acd976. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAGQ2261063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0c82b56f8ed4da2cb1ea01fe70647f7996d41d4a995b77132f54cf56225830. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAGQ2261931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bde18a2a12cd051fcfb96737e7f3acb53466dc643a3de8f9d865d79a0e8a2d. 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/QT65Y2515607.