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 0x9a9a6d94c55f78359c855ca6111008fa703641bcebc7957186555430c18ba5b1. 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/e3858166-2135-4623-a224-686e43e5ca4d.json and https://artists.proofprofile.net/proofs/artist/e3858166-2135-4623-a224-686e43e5ca4d.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 0xc2b8e5a0c37f771bfb4ae10dd32ec3d9b9bb433e76c16d8d0bf7c0e5a953840c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA112446221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133bc852823af20c003c3f002bd212450aee566dc45e0cf72c01e604fc548716. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ESA112446222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8e6d2f7599d40f4af79004d174e0070b5c5d556fc2ffaaa4a9c5b78caa5749. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA112446225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395f52386498b02c2a3b107ed79c3c8a25f989f86c12e9ce1943fd1c723867ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA112446229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c9d77145fedf7e6685e0e2dc25b83ea0516a725912138883816bf24d3965a4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA112446230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976511c6e13450a6261c0cb70adc8c469fcd52712c427f07c160f81c149da8d9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ESA112446236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadb1b6789f7b3c4aef927ccd0813608f75e9f40dccd6c5f3e45ee8441f35d7f. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/ESA112446237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621aa4b41b39db51bbec6b9e987ac9915ae62b2cbe1c9cf7f800ffb29a26a881. 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/ESA112448053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc498f27462a6754462088a68ba4e3f83b824dc612bb1841e4c4406d0dc0076d8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ESA112448054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae5ca880b3c6398cdda16c5ea6068bcf9a8c0a0890486345d32e93988d36b7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ESA112448055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dd40f036dbba87efc5aee448ac6cfb7b9c066db3761ef3e08017a3b6021a0b. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/ESA112448056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9b22339bed547fe2f7791ecadd0d099f2fdba9f2c217f6957cd557412b8ca2. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ESA112448060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4578e64806ae556de2fbe19ecfa060b81304b7cdb8de4baf14a8be4201ed7fe. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/ESA112446240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e766bbf695e14ac2fb1aa9df58901163fe978c2751e8797c12a31a202bf5e3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ESA112446241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e5b4ca7c297f52e1ad1e809d39eea84ffa67231ee39b8ba567b530bf6ef653. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/ESA112446242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa392863022badd82bf933c8efd75241fb13e580208877db9a250c94f701080b1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ESA112446246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60068c8c9b731c729f3f77d4d7664ba436bab36edbb25417427b78141e2c1356. 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/ESA112446248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cb1b8442140c212daebbcba4bdbd79e7bbaa76dd69cfc120df40ab1fee7ae8. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/ESA112446250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4298050ffbc73892c57792f6a7d8ebd00292751f170ff073835d6caa258b90ee. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA112446251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6c49f7fb41cad119add8301399b5fc69254eef6a120bbfd38259f6ad09b6ad. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ESA112446249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4298050ffbc73892c57792f6a7d8ebd00292751f170ff073835d6caa258b90ee. 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/ESA112446251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc51919da1906f9a726d730283ef205f0e6b262735d09e72877d7f2027e46264. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/ESA112446253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb5266ca8fc14b5a53976226a575972c03235ed23c51447c9a2a2cae4f599bd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ESA112446403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3f12a1064aae2672ad5d66a111e9181960e79e9d31100915f053b886c5746e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA112448186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe032eb635700a1168eea03f476f0d6e0d47a8bbe5f509eb51e79091bb07841a7. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/ESA112448187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7746a910dc40bd315bba88ad47b665397f5b876908efec64911251970985bf. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA112448189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b506ddb0fb9e013fcadeaa47c78a337a36973ee4662a4aa027c6358128c68b0. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ESA112448191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64f92edda96a394db83b01301b578559a6af754dea5f885e543ac3facb63199. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/ESA112446268.
Marcantes Machucantes / Melhor Amiga / Mega Principe / Mulher Bandida / Drink no Bar / Não Deu / Eu Sou o Gdk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9e8da6ec548b99abad7c26090c5adf21d6d9c6b6b87996c8a5911a79536866. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ESA112446210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fa3fb139f5f7ccf45bdfeb69a13b967a05852dd96a73c4bc62ca64b4efd38e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ESA112446271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1832498d8c080c2558acf5602a3e0a47645556683ace9259d67b878da0a2ef51. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/ESA112446272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda5276b1c77c83c488fe68f15dbc79550c509b881194f7ae9cea9d57c8501be. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ESA112567933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21554192d8489ca03e8ddcb3c601391d8c98e86d07f27c5886bdacdafea75b44. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZW9L2483302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ef33a28d8d28a320433cf48a6dbc53062b6bfdf554516049950ef8e38f74d7. 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/QZNJW2508030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3317ae16d57fff583b2a6feb99ab61f1e25578edbee6ade726606b45164a8d21. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/QZTPX2574180.