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 0x3336cbfdba51449970c6e3fbda5b336083ca0a8eece1d8253a4a2ed1b3b4106b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c385c971-9149-467e-ae40-0662ab9f0426.json and https://artists.proofprofile.net/proofs/artist/c385c971-9149-467e-ae40-0662ab9f0426.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 0x5e7c13824a1661e5e7c20337a9a5625f5e2096bc864d26dca53fbcf3a2eb030f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZA56E2315024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9698853518d23a5fd74c09c608542ce5990bbe48af9e90a4d5551bc924e22b76. 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/ZA56E2415906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbccffa87e4e36164b5816f50af1691fcf0b691f02a09a5e06454982743e8a98. 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/ZA56E2415597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9170d8f99b546b6e37788d74de222ff6f089083616a14a26a926cfe5de94cfdd. 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/ZA56E2315397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ad105a198d3194622ebf30edd5a7579962f2bf8a6ee1aad818ce043930679e. 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/ZA56E2315260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9131a5f2f72b6ef5b1c0678fe6cd219f4196176991568bfe6f3229a88b2cec6. 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/ZA56E2315025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da4f33de8f7442112e84dba435cd2c8bc65e928472c64cdb2ed72af882b543c. 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/ZA56E2306201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b659816d3b7f2c9a7b126965d1cfac1ff59063765cd4ec1ed92c7ed2c209ca7. 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/ZA56E2303736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd3358c59fc5e5df2695c7248c62b43d19bacc38593e46a788e51ef928521b9. 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/ZA56E2303654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dea20e172582584ebdeebfdd42e25cc115c7e7a2d0efb6ed7a334938c55f4bb. 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/ZA56E2303601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca8be293f226e70c42d0596a830fb0a84f0c6f9c465bcd0704113a659aec3d8. 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/ZA56E2303334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcede3d697d7fd779818c6b6543b17e368ce21eae3f238d39671f7b1c62d7fedb. 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/ZA56E2301997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a918a3619ea0734930b57effefc517c9bf1ae2de632fe3851903ed94353b7b. 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/ZA56E2301996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca23d655be4ce39e46e001e20f3632ab643a31cd0046358b2da2ec32300012b. 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/ZA56E2301995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512e74510d418fcbc469ffc9656040b28e3551c1ab637d822e61bea49107b96f. 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/ZA56E2201542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e80923494b336ef0a2b385ef76750a829315c1d5e4115fb63c5cd0544d8078d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZA56E2201048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846155aa5a118710a18bcda6169df302ef2b3e42aef1a63512d2b42dca5060a4. 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/ZA56E2201055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fac017851f78bbb49a647fe014f9d28c8193c7398c2be0c3323218b8b3cd631. 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/ZA56E2201062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bbd8cdcca1d8f4e19fbe10a59e152807cc3ea21b54aa183bb85b0172b63095. 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/ZA56E2201063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54df6fec76aa4b4a9cde8beefd80ad301308bc4ad7e281d856ef11bdda92294c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ZA56E2201064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ce7905e651dcbfd65903cfbb92748c2770ea6938391e7dacee714c36b1e82a. 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/ZA56E2201065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8718f3ce7963fa306f111bfe68755ff5031d7ab9da494d591784f9fbf6a69c. 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/ZA56E2201066.