Metá Metá is a Brazilian jazz band from São Paulo created in 2008 and formed by the trio Juçara Marçal (vocals), Kiko Dinucci (guitar) and Thiago França (saxophone). It is considered one of the most
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51db73facc57064fd28cf8b9867ee42e516af87d0d25dcb5d2aa466354fd0f6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14b88e6c-bda0-4d5b-a0fe-9b6719c6ca77.json and https://artists.proofprofile.net/proofs/artist/14b88e6c-bda0-4d5b-a0fe-9b6719c6ca77.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6127d412dc547a7dd74c77f5d02a71f469a331bea6aa105f2c46ca49643f5717. 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/BXSVC1800267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2e56f0a1e0c459ff6e1309efa1d7db5b865ce91ffda9a7b6fb7441d632dd30. 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/BXSVC1800268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9ceea3373f26a5532cbeba22544137ee099ca4cc0979d76ed40be161b0954d. 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/BXSVC1800272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeff00a44f7b46036c16c3bda4acfb8bf03e30eb751a5b0ae8449596fec9f9a3. 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/BXSVC1800275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76fcd3f3f91db5464f0643696e1956ec912bf01014911b8ccf1642848f0d99d. 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/BXSVC1800276.
Gira (Trilha Sonora Original do Espetáculo do Grupo Corpo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdf49ac2d86d6880c799548e751d87618d4aa40b7206d4de7f73cb20f5095a8. 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/BRCP41600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ee4ae6becf7087f9b426fc41503a83404788c537cb54d384e8002cb70ea363. 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/BRCP41600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34526fab7c32c8d51f90f1cfc55ca4c5741930a25f2c0841977add1801bf60be. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRCP41600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda93d251df3f23fe8d3fe2f12f2292ce8644f4eb3ef8e490b80857acae6ac818. 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/BRCP41600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed9ad23288db15865c866b213c3ce32389b49d5762d7d757ed8d0252188b277. 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/BRCP41600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78735c82967389c64e5cdcc1e1aed981f1ae89f3ceb2c03d9d87c807ffe26df0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRCP41600057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da36709c67024eec83c7440d68d770ab00e288307864a6c3435cb4432eaa97a. 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/BRCP41600058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093aeb648070b0cf6ee291a10e65a4be851f1b9e151150ddf53e887bfd3cfc76. 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/BRCP41600059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfdd465b4e0a1a3f02d83f322ed2b64ef59c1a84c5a3dac1fb79cf45321e648. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BRCP41600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cad3fce294b0a5370a21fca4b160c78b1d528a0ec1c88dfabfff32e17c84db. 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/FRU191600497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eecda700c4e3addc4f02697d3bc81ae33936c5447aeadc293cdcbc79bf91208. 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/FRU191600493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736edab47576badf1fbacecfc1d112e2a53e8e385b8b1fdd5d3c4d8df01e7a6f. 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/FRU191600495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d24dd9549ff70546afad2008d37f703f922d8f8904163ffdd43a1fe2652feff. 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/FRU191600498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f43ea945d8565e8cdc3ac730851259decf9788652f5257b88286948e4d4d17. 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/FRU191600501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f638dbfab61c5495d0f6e852f046b5316bb34f5f16472e1527feb6cc914df95. 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/GBNQA1400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e961b7f5d66ee1574f5ccc37aef01aba3e50246a360f37e7d0ff2df12dee7e. 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/GBNQA1400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40edac38e1dacceefaf272718426c5ad7594f6e82ad5b6fd0e37c765ee31ac1. 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/GBNQA1400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c14df7158d9a929e017dd1f4753d56c3312942ea129311600942fb13ad2f1f9. 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/GBNQA1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a014a73c21fc9c39ccdf993800e4e0fbc96a646dfd032633a9815cb71cf3e1. 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/GBNQA1400024.
Deus lhe Pague/Citação: Rap (P) Agatha /Citação: Dívida Histórica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aeeb5375a104e45f6424e70fe74cebd226cfa70dd266518c0672adcf76fbc6. 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/BXKBP2200116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dff40022e94149cfa42b8c8134118c11f9a19ec8e84a9830648a13492f1e763. 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/BRHXF1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee95b6556334a41c5c9223e5a296e509d502c8dca02a8a6c0545c6f55b89613. 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/BRHXF1500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0dc6d6fa9f45a1542ae412e09984e42979fdc61baf478bbef43ac7292417af. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:16:53Z), 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/BRHXF1500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538f9c31cf12991c558f93c78ed7665f8c439d8f94ea9cd244bb3babc9a2a197. 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/BRHXF1500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfc3efe2d6d949709d8e0c835f87babc1df2b4f3839523c7790c326039bc754. 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/FRU191400429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223a6a296075c420ac30731806af0e93d5260b27256655eb592e1d67dfeba8b4. 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/FRU191400428.