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 0x09d57669aba8c97f8db40974eedd1a96b76cc3e49d84e0520a9dca1f525bb99c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acf69f61-6d60-4aec-90cb-d78795e4e455.json and https://artists.proofprofile.net/proofs/artist/acf69f61-6d60-4aec-90cb-d78795e4e455.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 0x4ad893b865fa08ac1a57754e42850a6aff1acf70392cbb4f23ad008bbb0e4058. 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/QZNJX2459481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf06ecc2f5a4294a4600314af960d0526f0b1acdd2d8194d151a5ae7adf39dfa. 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/QZMZ92483809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd6abd0565dc04cfdd85e3d4b071dece91e0889f69781412a9923a7678e4aed. 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/QZMZ92474300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f585a0377d5c2e9833c182ba13aae1be3967c3c7d617e78288f91b9ed26890. 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/QZMZ92427961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109b52131d1d20dd4f3bbd6be0e7de8db7b03e2de312697c427b0213cfbd102f. 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/QZGLM2485605.
Tô Apaixonado (feat. Trovão no Beat, Mc Jajau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35e262e78fcc6c94beceda3f3ef746427167fda7717493ca31d5a0f620fea56. 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/BCAP02300695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f121ed87cf0f2123349f6e6f2d1dd4464f77e16d46c98a1c53b795a8dacd82b. 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/QZNJX2318651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a16228ad9424481024025b9f7fcc709abb66b9c804f1dc151c5ddf860fce6bd. 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/QZGLS2336816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae0fd5e013897b1b02c3cfd3f029cd22f819df1de468447a447214becc6b3bd. 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/BXI8I1800423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb602fe94b29b60bf6de32d125fdcd327d148ed1936fdbfc5072fc5c2a6d75ee. 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/BCAP02300652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a01f3dcda25c31ff1093c8c969af40cb9f4abc7a8fd91e96d4253234611c9e. 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/QZ5AB1805767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb0fa7724623ff341c913df48652f263eb85412852df534252e7e8fd0fab79e. 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/QZHZ51940496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5cf9924273620f627b88ead2b1fc9b4fbee1413cc96d0d53151d4f21c7527f. 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/QZGLM1932475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab8291e456af46ea6dc4f6caf8d9bb015f344212608f684dd01a7c8ff4887a9. 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/BC34A2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e699dfde939ea2cdc6f3a9553997ded4c8ee1d63d2b0e1fded5c622d881dd5. 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/QZW9K2494470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f01e1f007da5241bac38796a85a2f3e3f2cd040ad687a650c806337ebd2120. 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/QZGLM2524328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d54cb8b64b078968d593e6bf03b8f43136a9f07ef75cbdbbb993cff253dd2e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:25:31Z), 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/US7VG2576199.