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 0x27888d788319b1e0a012656dc25c9f209e44df46014eae11daf7c473c967f102. 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/ee419dad-da48-4d87-b3ba-1aae82a3048e.json and https://artists.proofprofile.net/proofs/artist/ee419dad-da48-4d87-b3ba-1aae82a3048e.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 0x70501da3286093256227971a0b927c67eb9d1cc73b641a2c22b2e303b5f6b538. 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/BX2LP2000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74b3809438320826c722f36bb71375f18291e8ac488cf642f0dca6932ec1f58. 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/BXHAC2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b04dccc5a4bff04cedabc3fb1555e5e641fa9f5ebc3f335f823451457076a12. 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/BRSME2300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c4ec08f6b15be61737f25b8a8f09671263983f9107163d5647739f5df4dd4e. 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/BRRGE2300272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2359079ff4cd3da7a021847c6f73169be5b5f4be2af17106deedca4af007778d. 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/BRRGE2300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7504bd6a04b3d651f6b09ceea04c0f3f4fe6e70d63b6032ffead204031bc2b9. 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/BX2LP1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f60f5c7aa599da9c227532e025dd2de332c1cc72490f491eacb24dbb26c483. 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/BRUM72001905.
Sinais Sessions - Morro Da Urca (Ao Vivo)
Bilhete 2.0 / Incidental: Uma Gota No Oceano - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeda13d77738b4a9cc6045ac2e65112acbe6c1d63575a739de4eec15b4fd37b5. 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/BRUM71904447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574db2fc036938fa1b837d074bf55a92bcc0cb26c590fb0ac1649c10df206f5c. 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/BRUM71904488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53b7076b997715763969fbcc848bf7fb9924b3235d91351c0743f03b85e6f8f. 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/BRUM71904489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74079eede6133eb7f06ef37e8bb48cdd2920d5cae8dbd17b3d563bad71747b74. 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/BRU5R2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b094ec901c451d18d508e339ce32b56e494b826a419044c7cb9aa7f2bd287da. 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/BRU5R2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fe1c2c5d21e558147ef114c92854d74f075d513e07e83ce3b2c7b1ae243b9e. 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/BRU5R2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3b4601a26685a32884e0ea9f4c3048651b513dde7c6147f362b3807fcf3909. 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/BRU5R2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8111fa943432c37f2e81b962708e2931a754221fed12f2a207b05d7c46dc47c. 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/BRUM72002753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ff50b42fb25b69a57e8114982ecb20602da12554aadeec7ee38ba72827608b. 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/BRUM72000857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f835e0343c1df34d11acccc7a4548e917f1d3cc1c8617669b29263288dd08b. 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/BRUM72001933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebdca9a7282a9d9dd8a430668c014b17649645d986e357d41bbc7170f24d927. 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/BRUM72001590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1f58c426d973ed94395ea5a0dba8dcb55be96cef7684d5c1fb342b76588569. 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/BRU5R2000001.
Sinais Sessions - Morro Da Urca 2 (Ao Vivo)
Sinais Sessions - Morro Da Urca 1 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e69042fa7244ee5dbea73d9da9aad3939ff1812227cae39d65f13cd45337c01. 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/BRUM71902017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fd7cb3c56b788256348ce34d56955307655432c0cd8424b83c221341ad7cb0. 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/BRUM71902022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f368e4535846e4bc896312cbdf40e4ae8c8d677981263b38e06d207caeb347. 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/BRUM71902016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f7c71c79dd2a14c2e0a86edb12d60d6f16aeb79b3cb53234a434eda92ca8fa. 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/BRUM71902019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6524e5f4fed1363078c218828d154895d98395621ac25eb0b68f62eed064abb. 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/BRU5R1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c98fd9f621fe884911e486af232bc2eec9478b3fa183583e072e1506befb17e. 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/BRU5R1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c27b46995844b5e182010356d75b467777fbe7b4c24c0d62c8ce8b518d0bbf. 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/BRX6F1800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b04dccc5a4bff04cedabc3fb1555e5e641fa9f5ebc3f335f823451457076a12. 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/BRSME2300832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b2d2110eff154d8a157bbe131f10d6119881d2ec78be808d6e41781ada9d37. 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/QZ5TB1997223.