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 0x957e2c06129be9094f703a0349187d302bc85e3385839a9a45a5fe13f9e46ddb. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/983c51fc-fc77-460a-a1f4-58ac7ed5665e.json and https://artists.proofprofile.net/proofs/artist/983c51fc-fc77-460a-a1f4-58ac7ed5665e.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 0xfbc61faa8b4901aa69cb60d1a3a8818c13f15933f04e7b4fa4f5ca0b7556d918. 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/BXTS72200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2c8e94c749835eefc44482ba1fa7f811f1967112be556750050b86261adfd7. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/BXTS71700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c92af5af8e7a9c7ad1d8d324ab3dc18daf3e894754e64394427ef908701d0e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXTS71700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ff8d37e9d432202fcd82a264dbf0540ceb26736324b12385aeef7b40316b9a. 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/BXTS72000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad48f8ee93f57f180bd9cfd092b5bdedb8b9ed2169d00d530b5c0ca88f1a3783. 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/BXTS72100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b12f7d8cf71960bff36ffa827d46a6078137849c8256d36d12fc6282b0a7806. 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/BXTS72500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118d2ec6bd14e019c9220292c1464bc9e41cddc0a90598dbbffa308781650bb9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:51:13Z), 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/BXTS72500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7316ef3e9669b5944e37c7833250c4a7ef2fb8f489bc4b71a5318cf989c8965. 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/BXTS72500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483bf73a1aef84ea23556908115eb6ae83775f1d370037f1765a9317293f9ec. 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/BXTS72500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872b1a54b150c89065713da0012c0d0b319b77819d7b3fb3678016ce5c654d0c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BXTS72500010.
Arthus Fochi e Os botos da Guanabara (Ao vivo no Barbatana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118d2ec6bd14e019c9220292c1464bc9e41cddc0a90598dbbffa308781650bb9. 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/BXTS72500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223df25b1adfb544f334ea49b80493dff65e3c11291981345030c3064a7ca53d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXTS72000014.