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 0x2b74960c2ac214c35b33145126734b66a84e817f516d9afa638e0573b7891b47. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e802413-7c4f-48e6-b10f-b18c5897e169.json and https://artists.proofprofile.net/proofs/artist/8e802413-7c4f-48e6-b10f-b18c5897e169.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Reino de Ogum / Nação Guerreira / Homenagem à Nação Elefante / Verde e Vermelho / Nosso Rei Eudes Chagas
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 0x84f97985e852e51bfd33bba0159f186460f2a2164a4ba33dc95de5778b7f7041. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZTPX2393938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad124095b5a6a2c4e872cee92fcea9416c988547990a9ef6cadde11d826a1dc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZTPX2393939.
Pot-Pourri: Cortejo Real / Batuqueiro, Olha a Onda / Salve o Rei, Salve a Rainha / Axécatu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681aff71750fcb906b5ba9b9c10fb0b3fccc8bd3a1240c9963e658bff696b316. 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/QZTPX2393940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84970bb57e8dd4f5dc22feba3f95e7882ad28e4c79b525e48fff90be787d0a1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZTPX2393949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad8a35b2346c32178cc7ba12e19506de04bd9cba36d0386acc13d95cea716a1. 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/QZTPX2393950.
Porto Rico Tem Fundamento / É Baque Trovão / Rei dos Maracatus / Nas Ondas do Mar Sagrado / Canta Forte Minha Nação / Que Baque É Esse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0441055f17d02bff61589289c289f5627ddfbee377f5b57ebc13ab68ebc6e0f. 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/QZTPX2393941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7afbfb6482cf0d7a95db8f16a633bd821246ec40da2bb0b129523760cce4a8. 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/QZTPX2393942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1910c5a7876660361ae59941af6de83f4ccd85dd41781d28689ed53ae1becf36. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZTPX2393943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9882c213d5df99242b2b6a4bb16af70079f09590c33b06af752a529eef65a3. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZTPX2393944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2c2b127928ae34496e658d9baf42f965bb1e1c845b66b9e551edb59abbcdcb. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZTPX2393946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9070b92be71f570c665fc6bf2ad990eb74b488e9b3a4dc793b2b95989af2b179. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZTPX2393947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abde85312abd4f36f21576c03ee1e409e428aae382108c5d47c94c6e1f1d2bd. 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/QZTPX2393948.