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 0xb0aedce72cf4554205a5a55241974fd09224e8effc0f0358cc13712bc618889c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/572000b9-09fc-44ea-8061-458b5bb211c3.json and https://artists.proofprofile.net/proofs/artist/572000b9-09fc-44ea-8061-458b5bb211c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Milagre de Laço (Uma Canção para Maria - Piano)
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 0xc783793cc909620d23514bdff968ae705ec2a29b40d3a737d778c4745f8389ba. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BKB9C2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b50937fc7126f9e3e2d40bc826e1cf10f6065b1de2a484872b4e4ec0f753516. 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/BKB9C2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bcbc8a949fdcc5a13df8df2adf23df54fb2a26ac70de124d972721cc8887d7. 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/BKB9C2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc783793cc909620d23514bdff968ae705ec2a29b40d3a737d778c4745f8389ba. 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/BKB9C2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1808cea49755a13c8c5c6c1ec7bde3f1e9be014dc78b81edd6c5b5927b90cfe3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BKB9C2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc79cbccdde0c7b8e9d26d181c3dbe717e07278ef7b7206bda24d494969a1ac. 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/BKB9C2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b50937fc7126f9e3e2d40bc826e1cf10f6065b1de2a484872b4e4ec0f753516. 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/BKB9C2400002.