{"copyright_id":"0x4a0ef425adffc13834267a3413a29b81c396142dd10bd7a5b9393042a99cf5dc","name":"Rafael Alves Fingerstyle","registered_at":"2026-06-12T14:42:00Z","symbol":"NIM0328698","token_address":"0xc53b4404baa5cf4fbde2cee2b1facdc04506fb7f","type":"artist","uuid":"ff207b28-dbca-43eb-bfae-3fd3e397c69f"}
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 0x4a0ef425adffc13834267a3413a29b81c396142dd10bd7a5b9393042a99cf5dc. 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/ff207b28-dbca-43eb-bfae-3fd3e397c69f.json and https://artists.proofprofile.net/proofs/artist/ff207b28-dbca-43eb-bfae-3fd3e397c69f.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 0x7f54b2083179c4a4871f3a3812c2e3d444babf32aba4a0acaecadb10a5f77333. 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/QZW9M2312003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf528ca72e6240153f8a2c871be7a0e8f75403a2b74d311ad5c93aa3c14fef3c9. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZW9M2312004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4512ff7e1bdecb14cc7e859d0de9e32ced9d891f48611ff3c209a3aec09581. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZW9M2312005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa967d9ba270f19aa33835816eacafde5e0952b73c94412c7ca1f97e7e24d86. 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/QZW9M2312006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0cc1982c7c68d8e28c3d2bb1a88851ba30adca45a8771424f405359ba5eb0b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CH6542390208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41c5ae5698b685d3b263b0d620911c5ffe9fdabc0766649327db7486ad62098. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CH6542390198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89a8cd03a88d90331c618a9286b432c7e40867eba95c12e1f453e2a2c7bf4c0. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CH6542390946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e95773971ee7eeb3c15a6ee14cdd3a442a338b6a5c655f16aae6e4c07257f83. 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/CH6542390945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381218e4d12570e478395133bba27cb9248bd4e23dc8037f5e23e7537bd3fe1f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CH6542390942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d75c0983531d2f322d7d53fe4cf754b36e01038da6ac65460bfab62f19af9e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/CH6542390943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ae3c074718cc89575fcc70cfb47bfbbb1079dbdf74d762ed764bcd2adfc04f. 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/CH6542390948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3202c8ef3d5d7a27c7322414e8121c79d9ba4b6925272e53d5e4f188dc22dc. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/CH6542390944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1017ef7c2290e7e619011a08061d736e1c4a798247fcdac5d828cca9a2a097c1. 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/CH6542409529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaab2081dbc3c32c9f926cdd9e7b6f874970b8623a37f31fb35e9188913de05. 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/CH6542473360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5136c2a90d67f53149a860b4ce15105fe01ae5b2a8e3fe64641a46ddd851248c. 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/CACWV2287113.