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 0x68b3777f05bad86baf639af86478602e04e439515049ea0295215e56332e24f5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75e6be63-b4c6-42be-bd32-967d0a90e216.json and https://artists.proofprofile.net/proofs/artist/75e6be63-b4c6-42be-bd32-967d0a90e216.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Resistir e propagar, combater sem propaganda
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 0x9c40f45f6c89ea1cea9539fe91ed4bb83637b67d017e8c9dde696837aaefe94f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BX4IU2504532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608ed2a4ffa10790de5f81d344748f0b17ae5ede7237307292cc908a0aa6dd7f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BX4IU2504533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a853ac2d62a06954ed3a97a43f8b8f0b3e95471e61699fa0302cd769631d7e. 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/BX4IU2504534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b076c05ccb88aff9bd5d85c0552feb86cd165de19bd33448193ca88ba88bdf. 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/BX4IU2504535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48869500f5c86809ef0b557ecd89a87b3ac2903aa52892c32fe3ed13d3a0cb8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BX4IU2504536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7dad694fdc6a334502e8168c92008de7801ce5b145a6fd1a99c2efb76534834. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/BX4IU2504537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617948c6f527d410cb213d30490b4f4d7b029ad0eaac190ad3316ec51d6c461d. 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/BX4IU2504538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ebd8bbf3e867bf3c1bff0fd255c9a44ea593aa7d7045cf4a44e1c664633523. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/BX4IU2504539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a09df67c1de6ad803eb090a864d9e1420841795d9a11ed4af329e90d681a70. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BX4IU2504540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bcd5fa13c16abb7d0c554ed737bad2614472ae23ca8b361a5257a0cbbbda7e. 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/BX4IU2504541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311478d5495f5c51ab48fb1248743dfe915d7e5056a8af431babb50ba9eba138. 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/BX4IU2504542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96036e3358de86c878abe114dd87968389079207bc45d52ead6ee40f48fe2e0a. 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/BX4IU2504543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7034746f8eab029830bbb7615d086c62b0b97056b14846e83ec207cf96f31d39. 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/BX4IU2504544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd203e8061b5d70a7925c60c637e2445396bfbe1932f824fb5557c0ec01e78e23. 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/BX4IU2504545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b8946a370a25e79cf8d278ce8ccb23be53fd2ebcba9bddc0c33808885a3452. 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/BX4IU2504546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708fb1eefa72fe6fbda45f7b85b8859d7aba43994b579c5b6b584026a3d8bd75. 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/BRG722100348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708fb1eefa72fe6fbda45f7b85b8859d7aba43994b579c5b6b584026a3d8bd75. 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/BRG722100348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451168fbb4ba2367e6efcabdaed492859e9ee3a52939b8f2e35c4f072a932893. 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/BRG721900037.