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 0x88205d24d6ae8876cdbb00d4cdb0a760a3f21418b51b4514f1692715e0583bf3. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb38f24d-c53e-49d3-a187-fa431f96757a.json and https://artists.proofprofile.net/proofs/artist/bb38f24d-c53e-49d3-a187-fa431f96757a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Teresa Cristina + Os Outros = Roberto Carlos (Deluxe Version)
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 0xd1db115d3835cca2fe55a0b30817c4658100e525e2ceb5046f071c2a85c6b3c8. 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/BRDEP1200455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8197d13fe7b398b2af9639e91398ad3c30e3e34aa1d61216d821c1599a75e60c. 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/BRDEP1200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0590db1bce812be7cb9a9d4abe55e704fc07d1d6975340c2f1e753c75f4c4b. 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/BRDEP1200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c7707edbf2500ed590306f213c90daa22d487671695475ac102cf26e8b9c7f. 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/BRDEP1200461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47d1add95abb06a70998cf5864b34219225c91287b060f97285efe85d48a06e. 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/BRDEP1200463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af753139c16058c2a01526a97b2a5ff5c612d57fbbdadd94b4eec479d84de09. 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/BRDEP1200465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9ac4b4bb36d3b064af52c5f80c8219bdd5a1ce73da2ae9b70fd3dc82557245. 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/BRDEP1200485.
Teresa Cristina + Os Outros = Roberto Carlos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1db115d3835cca2fe55a0b30817c4658100e525e2ceb5046f071c2a85c6b3c8. 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/BRDEP1200455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c83553d7274e492e7a50c2116c03c5cea6703b1b5b6a95d1833fc8bd903a109. 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/BRDEP1200456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8197d13fe7b398b2af9639e91398ad3c30e3e34aa1d61216d821c1599a75e60c. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BRDEP1200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0590db1bce812be7cb9a9d4abe55e704fc07d1d6975340c2f1e753c75f4c4b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRDEP1200460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c7707edbf2500ed590306f213c90daa22d487671695475ac102cf26e8b9c7f. 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/BRDEP1200461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47d1add95abb06a70998cf5864b34219225c91287b060f97285efe85d48a06e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:38:10Z), 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/BRDEP1200463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6573ae936226468ebcbb7e91298d15306e05fc6955c538ec54e0d652b9c1c10e. 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/BRDEP1200464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af753139c16058c2a01526a97b2a5ff5c612d57fbbdadd94b4eec479d84de09. 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/BRDEP1200465.