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 0x3594ad7dfa73f8b57c3f11ca0d778613237879ead7517aa431b76eace8e98a2e. 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/b913dcf4-04c7-498b-832d-50846a6700c2.json and https://artists.proofprofile.net/proofs/artist/b913dcf4-04c7-498b-832d-50846a6700c2.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 0x0c04cdf9d16f04ebe8ee7090c0582fed6003c8de682f86a4f599812941a930bb. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:47:20Z), 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/MYAO10800391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0643a2daadc69fe26e19044cbde88a1401479d5e7f7c01d67d20efd47ee2b7f9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/MYAO10800394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e6bc0926dacece30fc308fa0140fa71fb33afb5a8e4ecd4e1e78ad5d657a2d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/MYAO10800390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7819aac6ab5f0e3edd07091bcca7878823eae4d8da547f89e2e986f01ce9385. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:38:04Z), 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/MYAO10800393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e65b5ebfd076be94bec84625fbb37cf3b164de92b635af5f9069c026a4c5e84. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/MYAO10800395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859159b91b13a0d9f0a498b0acba9f32cfb142dab9f3c55b1046792397879666. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:51:44Z), 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/MYAO11600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8ca5481e4cb26c42bd8af64de439bb32b2dcdc8a7a8fc6961f6ff3017d4e62. 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/MYAO11500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb23fd7a22cc366fd96ab4c9b1cf12de9b250009304c5bd3464ede6da7e9054b. 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/MYAO11400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe84ae5780d113e63c0ff30a98fb75cf3ff7ec841e0fdc99f0104beaa6a4a912. 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/MYBJ11500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c73b9fd225a7d110c21165900d6b698de50970778a0053981602be59e4c6646. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-22T00:42:17Z), 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/MYUM81505710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247a02d60ade36004c7e3d6cf978fe8743e412246c17d28e23869d083f1a80a3. 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/MYMA12300109.