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 0x86e1b5d4bc8087489599cd8e2ef18ce6bdcadbdd393755542652cddc95f65bfe. 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/6877c51b-723a-4e1c-956f-845762c8e763.json and https://artists.proofprofile.net/proofs/artist/6877c51b-723a-4e1c-956f-845762c8e763.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 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 0x926717b5759bbd7d0d83b8c70318ffd9377f91f6e6f6e5bf41c0aa195070baba. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BXRLC2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d0c81782fff2e0c4e8753e61c17dd895cb080342c1e34669cf812c7ef69896. 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/BKJSH2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81dc29ef640e2e3d50db8d934d44235f56ff8255af9401e6df25a123af8d49c. 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/BKJSH2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dda50886892752fd123184a63feeb0c931bf378311d7daec53901e0425d9ad. 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/BKJSH2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb151b69d585fa4ec088ee888e59fca41b3368379f6a141545b70523159779742. 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/BKJSH2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0157bde3a9de43d27f79d0744ef06634e2af064c1e51f6350012e33da4dd6e. 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/BKJSH2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaddd8302f00f95cdfea933e5885570687f773fd7b61279b7e4cafb2616acab. 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/BKJSH2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc13e22cda81c4473d5fabc1f602fa5e6a382daee57c6f70f3762d2c3bdfe9d. 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/BKJSH2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772360e4dec4e22e8b6a6b2fa9e1a2aea5bdcd52aa9c5623bd5d6b06161e2775. 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/BKJSH2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a1c4d7bebe06c25e171d21ed31fe18250992f5b5212e21751f377b53deb1f2. 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/BKJSH2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202346021994079a0c50daee9119aa49ab0b836215364b8df40065bb310c4e45. 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/BKJSH2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc294a6fa081134877cfb02d0643e9345762d6d53b9cd688095bf111e7af1537a. 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/BKJSH2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c1835a0e8b307830f0dab4fe6a903e89b3a333ff4d6e3c9f17ba646a8d3788. 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/BKJSH2200023.
Estado de Poesia (Ao Vivo) (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e50153a2db0e7c12f2c2f23c0a55ac9f4badffcae22ec1889acbbf35b5de27d. 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/BRC0H1700032.
Mama África / Brilho de Beleza / Pra Não Dizer Que Não Falei das Flores - Ao Vivo | Bônus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e052b404374d0843c6cc89983b97bbc67864000b867620b3ea3eb16e7bc1ef. 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/BRC0H1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8162ed2abe7f11fc4bdb7ccecfc5ebc7234bbaa2b81fb0fbd3191df6e6491fb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRCOH1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9a075fdd1bccce0d55d9e55d339019dcbaf2a4c7ecac423dc2125910163fca. 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/BRAGL1600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e50153a2db0e7c12f2c2f23c0a55ac9f4badffcae22ec1889acbbf35b5de27d. 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/BRC0H1700032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952dfb84c662a8f21a7f8538ea5d4571f3719d95920a5fb638847a916e2bd2eb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHZ31975450.