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 0x8889a7b82b29a76b720a9f282af51343c99da48b55c1afb095e1f7fcb048d175. 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/8914c8ad-52e4-4627-acfc-07ef0581b0cc.json and https://artists.proofprofile.net/proofs/artist/8914c8ad-52e4-4627-acfc-07ef0581b0cc.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 0xd3bd56e95e9f4beb4523af53cc6355268da3cb48dc7de6162ee2b05f4d6abd70. 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/BXDK52300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d2679a9f54ae21f34dfbf7bc6e1d9d51be365c26469f95d0f62e59e53e76aa. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BRC1S2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22799e714a198a763efc1d117a77f264c61136fa25b240d2611a01676879415b. 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/BRC1S2300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471388f6028d54aecd9bbc067c4e6011d3fd057134050b91d102b104754dc2d5. 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/QZW9M2201447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8307c74bc714cc39ba9cc1aeaf25b0c3353f7945743f402a888b1bb830b9b8. 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/BKGBP2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0afb8485f834da8100b1ce929b0c84e4561f35a9cb78f73042caee702017904. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/BRWMB2200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3315a65b4d3680c2507b7eae53ff20521148a56da4c3a4290504341fd2f408. 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/BRWMB2000639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9801409c2c9dcb44e3314d5abd71f0177efb52941853d9c0a4367ab490717c84. 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/BXIV82018136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41e8dded6801b3a6c7bd3c36a69671108b7e09df76cb0a7fdd8a95c1ee54d12. 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/BRSME1905125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033afb0200332d10466e17a9bb7897745c28bae3ce2c6f7a255376fb5b50d5da. 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/BRC1S1700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5abb81eb6ad1448c455690fbf12879e283e4c64d99663ec2b6946cf5e21d79f. 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/US7VG1650002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde27cd11e30c85cd103fe3355a11181ea5caedb209fcbe31f493d907aca2d85. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZGLS1953127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5441a0c8c8a623ca2885c803b3d52a29e599239cc7f18fcc993caddb1489966. 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/BX1KG2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fde6e4cb81cb80c533714e252f12e27eb1b3e51200f02a6e69aa6e1f77315d6. 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/BX1KG2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c2df88290f53024a53edbcddad38a9c5e7de03c21ac7b679409a004a04c35c. 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/BX1KG2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf505ad082d80154c60e041faac525ce3b082768ad9bf84c448d726ba12658ad. 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/BX1KG2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe211e7b9e6cb24392172273a84aa3703acd0c04904dce73129fbc365052302e3. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/BX1KG2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4367f63274ada1cbaa7b65249e21fb8dedab3878a1498bf7b0ee04e22df3be8. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BX1KG2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd26d1fb5d9ebf1927482c28548d88e6f2bc4ed52fb2719279bb58fb63fa34f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BX1KG2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd26d1fb5d9ebf1927482c28548d88e6f2bc4ed52fb2719279bb58fb63fa34f. 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/BX1KG2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4367f63274ada1cbaa7b65249e21fb8dedab3878a1498bf7b0ee04e22df3be8. 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/BX1KG2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe211e7b9e6cb24392172273a84aa3703acd0c04904dce73129fbc365052302e3. 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/BX1KG2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b15dc155e6c7dcadddbe8f1a89962ce37c4ef39f5ad523dc48e7fa89aa9e2f. 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/BX1KG2300008.
PPF – Diferencial (feat. Junior Lord & Mozart Mz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb904ec5094543a2bb04f4777357ce5d579622675f0544a2eeec1facb01e65b42. 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/BX1KG2200015.
Fé em Deus (feat. Mozart MZ, Junior Lord, Pelé Milflows, Mc Lele JP & DoisP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47e0682ef6d7f9f260a44a7c7f05401725ba6201a893eacba8d3a00505238b6. 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/BX1KG2200007.
Dia de Baile (feat. Mozart MZ, Junior Lord, Pelé Milflows, Kawe & DoisP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0811d5f9db3c82d3cac60e9e056d89d2d6fc303363143a0d65305c138315e3e2. 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/BX1KG2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5a45b9ff7c018d4d2deeab782377266f8a3cd89b77441bef375961513100b6. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/BX08N2000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfb09c05260f44ba1c1f8ce786adb77d0ef8daa4d7b715f949081ffd3005dec. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BCV112200100.