Ave Sangria is a Brazilian rock band and one of the leading names of the 1970s psychedelic music scene of Pernambuco, along with Alceu Valença, Flaviola e O Bando do Sol, Lula Côrtes, Marconi Notaro a
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 0x8ea80e723216b933b1f8c3d154e55ee4d99e2e547349a059ecab5a457bea08f9. 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/4748b0e3-9ed0-4c29-97bd-73fafe01da5d.json and https://artists.proofprofile.net/proofs/artist/4748b0e3-9ed0-4c29-97bd-73fafe01da5d.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 0xf88279e565d99ef10126b89815adbcaf3d1b82cd62418896abb6d27a3c30b8ae. 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/BRTVW1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44515b5e78824bd9ccaa8524ae500bf57f709e862024684c627f49819f37f446. 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/BRTVW1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc90185225676e577e3d67c602264a3d8bd4a463f4bd2206152ca7084a0f794. 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/BRTVW1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7dc37cebb9e1bc94faa2c4188e5ded6f0dfac5b7bc9357008f82245a93ac95. 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/BRTVW1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc715822e86ddbae07283a0b807f0d687b2580d11ed6f3f97731fc433c26c87ed. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRTVW1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdc38aeb8ee2beca2ec42954627f06dd38407b3ca0ccbf0ad3dd0b089c69c86. 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/BRTVW1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0791611a78f945783e2412de1a6edadf472cfb9f2e95a43d329c420976d57e. 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/BRTVW1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45d14fbee86fb417b2c4f97b79748ce2a67495f78c708e4f3fa1c2965cdec67. 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/BRTVW1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfb7b94d8d86cba84ff5eb26b118a9103b7935db23acad71312bf10fe63c200. 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/BRTVW1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b2fca0d14bbcd61761dd8a2a5dfe4b0f9267708273e713f6e27ef6e32661f. 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/BRTVW1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6ca0cf4f1ef55882053580a6ecd53900d297205eeedeed308de90dead72191. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRTVW1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3751318b8a54e5dc1acb3c40cbef50f416833195d98327e86bd499f644022dc1. 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/BXMRN1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebdd6bd35a41f677837ba3579ee5af9d7902baf23529b91fc021ef62e79f8ca. 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/BXMRN1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46800d7fc1f22663ac1782a47edad74d630a422f75d0d62613d0aa7cf575f0f0. 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/BXMRN1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6cf276d2c0ebb57b372a1fd1ef4d41cc5a6ba03aa16cc7dace273cea40332e. 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/BXMRN1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d576c71bcb88400b8448f94e9db736eba84921ab81daa8ae77b4e254586ae8a. 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/BXMRN1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1548d23969bc55edf7d6c7864e813c9959e2b4a1771fea681cf34020890650ed. 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/BXMRN1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3262a36549b7eeca5714c0237caadb9b716ae2a67360c5a35b9166e43e3cf193. 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/BXMRN1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc6382e4f2893526af2396ad22470210a9155ab00b252bef4fab6857bd6677a. 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/BXMRN1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab966af77ae1230714b926d0c3ace973db9ebfc61c90a0b30c40604b2438c04. 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/BXMRN1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f759796965a18fe44e872e8f649ff1fa7cc6cd8bfe6669debc3b8c30e30cab0. 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/BXMRN1400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79014cc43a1e4414132c29844653921ade40c94d56bbd0b97b9ba4a03eefad59. 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/BXMRN1400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef97d05a3f8b36e1ef0c774fd63dd8f5cc3868d771364c7fd08dc8680ee3747. 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/BXMRN1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54bfccdbdf517a6137fe5dafae5670dcbebf9807a7a2320bcaa9de741625394. 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/BRTVW2000003.