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 0x7151326d72d0f353afaee9adf0d7b6d1a1ba35719059671c43c97a8eb7f48948. 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/10f0ee97-5996-4c37-a452-a2cdada647e1.json and https://artists.proofprofile.net/proofs/artist/10f0ee97-5996-4c37-a452-a2cdada647e1.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 0x48b2b1d9e8423b60dbd4a48225b9e785ec0bc2811b70c91996d38bf08eee13c8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BR4QI1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b6b826467ce8e3c09e41ebf44ce0b04e1360a6a3eea995658e30e36d2c58c4. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/BR4QI1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2925b7c05063d1e40892f3d1d4129d675cd2319ecc31469f4ede30b7b6b0e4bb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:26Z), 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/BR4QI1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f7a5dd7e4d415f285905ed44b1944beef9d8e8d56f0e7a7eb2f760b5112d27. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BR4QI1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c26a9bf3505efb96cd06be04c51aaea8cbb08a8b3d3d06f7716fad05de86112. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BR4QI1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3d11898fa5cf0036a46b3b67789b6c123d743e3a213f1a3e48dcc2043c3ae9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BR4QI1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae23145cb32e589400de1a6419925bbc952200928dfdff2124dd1b4056f54cba. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/BR4QI1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2e35286e4a00142ce46db6af6453119be3fa87fc59d9716233dcc06873e192. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BR4QI1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67f20d23c52e57901fc31899affa9630bb6cc8a40ff9a672481bd1064715969. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BR4QI1300012.
Deixa o Tempo dizer (E Tempo Zara! Tempo O)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f5369269fbc5957ce07338c4614a362acf1f38d39dfe3c2bf19d1a7cf411d9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BR4QI1300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83ca8bdd6beee3b55b6793da4c70863026d577589a5717fe32fa64ff1ef7c33. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BR4QI1300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507e5cc8855535854f0a0d0fefec7e50f3029cd7c818b0d708ad3ee31bc5cdcb. 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/BR4QI1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6d4b730ffa0a15534cafed4020f82a97c619e4048deb5fe8ba1d6cd1253965. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BR4QI1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2e1731e620b183d577f481922bd00023a291a47125123fc091530f43ce3121. 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/BR4QI1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a258903a79f0de6f99907b39fa9ee3fdc2e702bedeb7e003fe69247660c3402. 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/BR4QI1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7054116859d64b7c1facf639e78af5ca3f689d6469a8794304fa5f76c4ddf5e0. 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/BR4QI2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f06776872bd48f3d2289fb6f8f86bd6654bfc5f2a75a6331a03794d5df231c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/BR4QI2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931b079efae3b0170e33d40f3f6f987a18e088bc66445723e8d27fd2b054574f. 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/BX1LT2100012.