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 0xd0355fb053b395a8c0d13526586274da421db92fcfd8f16e03fb9978d42d5c33. 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/cfd83f82-a78f-4f94-aff0-b5edb5b1743f.json and https://artists.proofprofile.net/proofs/artist/cfd83f82-a78f-4f94-aff0-b5edb5b1743f.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 0xd1a4536df45859f0f19ecc650a44a5ae0e8fc7b151f4d2e422e66957d53220e7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/BRPUI1000926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d4e6583d8082f6ae2daa1e051297aa39236cfe9a5908072449f65b65cb2aa9. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BRPUI1000931.
Filme Sementes - Mulheres Pretas no Poder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfefaba30387da6a0cfdf2459c7fe2495fa25b4511d46ee02f9d06cdc462f66. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:53:11Z), 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/BCDAP2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405f8f9d29b487661f8cee010a0dc727b358c207535f032da51bb987c6622d7f. 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/BCDAP2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d67d402cbac1bf22422643c1afc12971911793eb668b86c6fa1af1112defcd. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:46:59Z), 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/BCDAP2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa0600b9e49860c3c0e22a388a1d2283b01bb5cf94394f0c1cf8cea6833d5d9. 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/BCDAP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7744a0d516df6a26d2e36e12345dc72a1f0289c2d49217556d76632fcff66597. 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/BCDAP2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0764eb78b646be190b1d402d905b14b6cf798f1a23b120e227d01effcd017eb. 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/BCDAP2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ce6d20b2c9a045d852937b90fd75ccb2b97b79aa02784a8a3169c035507194. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/BCDAP2300003.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8490a72d4872f98f80ceebb818a90d2dc060ba59818bb1614c0ac2e117400555. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BCDAP2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b24e91a597754793c49280721153dd02edbdebd2a8edeb9400d2b46f959f854. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BCDAP2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ae7bea9c56ee546d70854ae3016a4d7526cff0ca3a0245be4dfcf61e438b8c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BCDAP2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12b26d8ba55dc5cc4cf785e6fb56f813b86a8770e2bcab051a478d020a2be50. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BCDAP2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c00781c1838b35c5d7511fc65dd76f786744c5fd58d5192ca4f9df8fc2694a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BCDAP2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea45255ce0d156726f2223881a145afd156fb5283338cc35bc062124c67a92e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BCDAP2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6737d99cd3d8dbe33739e4359484c143e3680b563533e7aa0c95cf873435cb. 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/BXKBP2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000fd21507db9b94d86d25c60094d4b6cc00e88e1dec85fc527d5d69f65c30e1. 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/BRC832400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb244354f8523c301ae37e5f315f083e0b0140b3367246fa0e41c21e89f7512. 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/BRPUI1900185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6737d99cd3d8dbe33739e4359484c143e3680b563533e7aa0c95cf873435cb. 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/BXKBP2200119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10844e17790f4e6b5b1cd0d7ca6b70e8db330b0b97be6b003277cc140ab89fa3. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BRUKM1300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d170f9ed0a521aee3d80d2b22ef6438a0d4e7ca82b8b65ec349fe0542c2c46e. 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/BCA5B2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e115898d72503f23107ea1317edefcb9f1d2389e12187751f588c3b200eb2d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRJ052400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110a437b958bc2d237a9b32fee0f4287c93a452a1b3c5b3a946e73d859b02029. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BRPUI1200450.