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 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 0xc8f7150ae5363c7191045e181ce5e772ef7c98920140c48c700e8d3a38109139. 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/8d4fd185-4819-4632-9f4f-207491100e90.json and https://artists.proofprofile.net/proofs/artist/8d4fd185-4819-4632-9f4f-207491100e90.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 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 0x1086eb1f0b0302ca4dad7e57d383187be8da6bd23732464f560587b0728d66e2. 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/QZNJY2344955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc12b7e1cf357ab16d6bbfabe495d4e60f2dd43408f1f7cd6ebef76fd0cfe750. 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/ESA112437174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403085687a0d3612fe479eacce4513e6084f20b7beef26d4f5276b500cf2babc. 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/BCM9B2400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635ace384023439e4c32d73a21e4a90864a76086e1af39f2a47f8a9473865d2d. 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/BCM9B2301111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f978ff067ba92e3d03552df808a8f3c729cd53a98cb456a0a4fd5be800c2e4. 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/BCM9B2300925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d41ad13893b269afb95348f87046c06cdbe883bd9921d0ba38f107360af1a08. 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/BKF442400212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2c1fbc39b84bc9688f918d2bea7b883a08608921df5511c7cf708ba574a989. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:40Z), 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/US7VG2544937.
TODA GOSTOS!N#$... PRA SARRAR NO TRAFICANTE
Vou Bater na Sua Cara Com Meu Cordão de Ouro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e5a5c6a238faad3fbc09434eda7289fa620f04e9dc0e39049994379c798d47. 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/BXX722200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca19151bcdb531d8769f2980b5a9a0266f0adf9ca8d2821259f6e8c43652316. 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/BCM9B2500897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308aaf62a8059bb3f9d87dd33af69993fae7982f37dfd648c93eb76ebe0541de. 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/QZZ8A2538067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11b96965edcbd489922e3cec3ec1cdf62e9efb468b8b40ff4572b558d65d8a8. 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/BC3PG2303591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd492ad001f234d30dff3096dbf308faa618467e1cd29413e9cba4f14847bc7ed. 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/US7VG2351047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c7a9041511c685cdc1848e581891ccbf529dd3ef3d2f8ceebb5733845e1213. 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/QZWDD2594290.