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 0xcbae5457bf0824332153e35f82bd78ac2ea4adb94f9ce705293635530c8c5147. 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/6de22ecf-eded-4437-be38-5738d6538a32.json and https://artists.proofprofile.net/proofs/artist/6de22ecf-eded-4437-be38-5738d6538a32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
If I Die (Before I'm Old) [Brapp HD Series]
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 0x419e824a8d883b228392875e8af95f88686b16618a11e4a01f6df291b361d377. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZNWX2351882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c178f70ad56e0147e4ca5315fcb185faf6a56b59b20d6ffcc98c6a7780687d. 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/QZTAX2321483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bcb7d5cc9d2eabc6980b061519d471b3e8569dfa999cf8bc531d71891a0d51. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZTB92384372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a9693de57d7d32e449f8b625360f64039121928bb643732e9f01513969538e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZPLS2455041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d83fbb4e3c941427327bd132a138a0a9d8033806e3813615856a09d0b425fe4. 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/GX53U2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd2b6bbd45bf3213ae258fd1c3a24cf8c249e4d4424ed6453d322c62d86254. 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/GXHAF2582468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c17fb05e89bdd0a8ce0eb5881a96c65a5560ca1511e1b100a439a012657b5b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZZ7R2505999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f54c47833d73efbea6d321007999a2cdbc952a5294f4ab2bbc6c67668f18ee3. 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/FRPHC2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f54c47833d73efbea6d321007999a2cdbc952a5294f4ab2bbc6c67668f18ee3. 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/FRPHC2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb07682a6536d8a1eba57dc9fd139c1afa1c844ae94e8fba139045f7201eba3. 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/FRPHC2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbba65c9dcdda69771dbcfe645f3d6e53e026a80bb1db200267177c4fb04f9d8. 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/FR8GV2310330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895637a2be2cbeb8cd50f6dc7b097b353e44b566ee791a22dcadcaed8e5c1b17. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRP7S1900590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe4826d2459f0c570e3a3a2821af1c61c0dba5f0481a7c0515387a9d10780af. 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/FRP7S1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b02531dfa3796980528211dc0e9725dcc712898c452da58744c66f6d6a6220. 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/GB8KE1858184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da7e28a8321a3356ffb92e4faf5aa55db4d16dcb3a4b7016cb553ab418a4fba. 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/FRPGB2429860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b474c69f4cc18ad4b9028668478c825f712cbe0704d5a04b849b484a8c2b256. 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/FRPGB2429880.