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 0x433f25b7068cf4661dba838a88ea4ecc5965cea01a71c655a809e79f235e168b. 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/22e2d91d-49f9-450b-8922-45eed4bb9771.json and https://artists.proofprofile.net/proofs/artist/22e2d91d-49f9-450b-8922-45eed4bb9771.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x6a855e4febe4b240098925f5808c2fd66a1d416a69baa774ce8951a3430ecea3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BKVSN2300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe675c67f5c9296d99926c120f8a1c45b328f4ccd528bca2d4dbaca56e4d0dca9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC3PG2306719.
10 MINUTINHOS DE ARRAIÁ DA (TROPA DO PESTINHA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c884ddbf7fbd83a5c603d2898ad22afb0c43cc1fd0e591c2817eeff7d0aed10. 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/QZRP52472117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693d6dcd40d993261e226159a8df824e30cfd922899ce445c1b62329aaa3f19a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZRP52472119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a76f57909360b42c041a0881d0a6bbe43e47a3a93c36d08b1d671528751f6b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/AUMEV2417351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d40e30304bf73a0eb7ef8574fdf87b044b949bd19946eb55273c482cada3167. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZZ8B2344266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c1acd6f9b7e514afd126829367fb638e277a2d1e67dd1f1d95aec8462efa7e. 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/QZZ8B2344270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18255e560e9605096b3b435f6b12e5a7e9c4c14ff27070a194bb2c3630a24783. 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/QZZ8B2344642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08f650b1a66d21bdd6ba4f7e7e4b6bcac9d427aa50f9eda6b568928daa85dc1. 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/QZZ8B2344673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f422634aa10158523823424bc8acbb5cac4f61f64c8de950bbaebbb7e56130. 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/QZZ8A2372028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74adb27b3b65efe4c482d073b45becbfc0f40d36d033af21a95d4a3f02891fc3. 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/AUGBT2344748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb064d1373c812f7a9571c67ba8d026eb98ad4beebbeda4b5382a9192e8e8ac47. 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/QZWV32321302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af8b84d2e04d85c1d701e9eae1e8fe0185e922b6328614aedb66756a16f64aa. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZWDE2364997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cc9a7fd22e2141d8aefa9cf10f225150ff454342d8305ac322fd8a0fe8ac31. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/BXG5C2200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1c0a9406f46d29aad67b1302ff8f5f2e8e6374a91c2bdc3c32fc47b9e48c01. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZWV32321305.