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 0x5ffbe9110c1572a2c35ccdd9ab71e465af7fb045fac93049c9a035a4e640a0d1. 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/998f4d48-0884-4276-a7b0-635bc778e80e.json and https://artists.proofprofile.net/proofs/artist/998f4d48-0884-4276-a7b0-635bc778e80e.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 0x37b4755e55317e101cdaabe758f4145bf8a9a27e59089883dcd9406921cfe5cf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SE5BU2257215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e2e37ffc70a76b5e480f208afb08c8c36afbee9ab4e842e826b6d61d567298. 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/TCAGE2212967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e2e37ffc70a76b5e480f208afb08c8c36afbee9ab4e842e826b6d61d567298. 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/TCAGE2212967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1511ced8f80fd5fca93805746676acb5d3dfb0996057000e3a40e908cb471004. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAGE2213050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f128cb63ce334596a5a17d1e5adc4cd1f480033e72c82c1a57d5b5efa7dcae8. 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/TCAGE2215203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2697f8e68a2e5eaaab710443428c2330ac73a0b14e3ef2e9bdf3332c46fa42. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAGE2215207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cdb294e843bf6cc09e9576bebe1ce43fbbdff4440edcfe4eeb1b55120427bc. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:00:46Z), 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/TCAGM2285059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddef70069b33e39e722850621932e2e3a9d74f1a3af0705fc024a502e4fba7a. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TCAGZ2346317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b62eda3ed0760bd59b3279d54db2d3879b11766c03cf746a649ed2edf2c7b7. 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/TCAIN2457672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa830e0d1ffaeec74a70896a4c7a8ae873f47af8e92320b5c2bccc9275d34bf0. 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/TCAIP2439574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2652285bd0ca6efe081c867c5b0ef671ee9437892b40b117a35601231309faad. 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/TCAIR2439670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c89e05d5f989c3c3969447056388a1550b7fc3e1d958fa596ea7d30cf945b17. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAIP2439683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b62eda3ed0760bd59b3279d54db2d3879b11766c03cf746a649ed2edf2c7b7. 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/TCAIN2457672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bbebecfde61378e92d999eb99e9e899b7f6827cad3e2bf302334a5cba31ed8. 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/TCAIP2439842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41db5d86bde9cf6b8e39151353370122a2b349384b9b56659820c339a3a83ce7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAIP2439930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb94f1d422ca3b1b241d7410132a3ffabdcbf262a502cec2a427f08c17957d0. 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/TCAIP2439953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b0d26407a346473a6cb1c3591612c0130457e7ea7d3a1512598be1f5e8ece3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAIP2439980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a13d66ed881360f4585e0a6e74b1eecc4670242a15968f515b7ddafb2d77584. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAIQ2439999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d7c9c72aee10c4ac3927ffd1c0b751ca1ed0d4bb681483a3d979d33123077b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAIQ2440020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d1f259271e4ffc31bf09f38c210322ed6a79eb30644705bf1cb9e2ddfa7e5d. 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/TCAIQ2440025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a8ff6991c5e78cff4dad9557ccefac9cb7cd6d96fdd3a1d08b042443f12198. 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/ZAKN83300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a8ff6991c5e78cff4dad9557ccefac9cb7cd6d96fdd3a1d08b042443f12198. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZAKN83300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee27429391df62d0f00e982c0679903f5b8704b386d67b026b41bbf986cb9f62. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZAKN83700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36f77b50698a7367fbf4edf26c55bec9924fcea511406f105eb4a577a3af4d5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZAKN83700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a8ff6991c5e78cff4dad9557ccefac9cb7cd6d96fdd3a1d08b042443f12198. 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/ZAKN83300106.