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 0x899119d9e73844e76247940320fcc772fc9a818ae9a89c3058fd0781e10aedef. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f629ddc-e180-48af-990a-d79ccbc2ea13.json and https://artists.proofprofile.net/proofs/artist/5f629ddc-e180-48af-990a-d79ccbc2ea13.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 0x06f5a2dbde7e570e235ffc89615d9a9f15dec9a9bcea15265fcd802a0c811c48. 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/USA371182484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9684ca835dd03f7ce533822702b01e555da56670fa23aa6960a3f0c930ae99c5. 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/USA371182485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45ca65d130b0b512b70103d33dc8288cb1f5a8260ddbd7817087bea30280e68. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA371182512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7016021cb924f8e080cc4fde2ba2f3db71c067ef85cbb5e3f57f95058553a6d. 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/PT1Z22400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866173c7b175655b31164d6523ec9e95de162d98571dc9ced995505dbd1a2d1a. 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/PT1Z22400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9493479ec2c8f62ca42d6bbbd97487e9fc39bccf5b66d8a73a9e0f0aee856b. 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/PT9DM1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cd4f6deacbdd142b36023fcc5fcfeba8f39b1447f0341b124af5989c9e400b. 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/PTLR11400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf733fa58c50cb0ffad72ec3ede684b8b1e1638419bc1912c78dbb5261b2cf01. 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/PTLR11400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7176cf55346fd9bdbdef5c53b4f9467e5e3afb9b8918211685bb023a8a3ac3. 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/PTLR11400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f35c29a5dd546d3ceaa36b19c60fab82e1e272c18866069699ce106dcdbcc9f. 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/PTVC18300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ced4503c0454fde288d1c1146622ae2cc5a75f7825c7945deb7b8148086afc. 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/PTVC18300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9f70061aadd03525df3d7e6884cc337a2aa4fdcb8eef4b7cd9f95ad6e51631. 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/PTVC18300008.
Canções de Embalar de Dia (Nuno Rodrigues Apresenta...)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ce8862da23728b1dc4b39d8ae8f564b9ff58c091d7b7a433fa0d702e8b6591. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZH5R2000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa13cddadb9f4082253f302fb45c3b17395235fa68d9a401ee483fcbd715df2. 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/QZH5R2000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83e487634200b234c1cd6c7b278097abf51ac24ef6237b608aa420c01cc40b. 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/QZH5R2000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2321effe8ef3ffff600c32cc1e020fa30f920b6b6511920c94e2761ab50320be. 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/QZH5R2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbd1292c15a4c031c72619781fe3122a02ca83a328a5b51e000ed94960b9a79. 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/QZH5R2000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d5b0726ee61f9c6fa4e7dad01063899a8862032d9f3e770d1b8991af8d2cd7. 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/QZH5R2000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ecc9aeb258811ca0634485170f533c5073ab00ced28cc69680dd4bed3631d2. 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/QZH5R2000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f987c3ba053c951cbd6f83af535a4e1bef882e65a27a1c450ac6b056c921c36. 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/QZH5R2000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6fc171d9902f169da795d34143359dc21749132d599aec6b56de5f84a814ad. 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/QZH5R2000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9c5a59a9c9035d45c142ce09734ed8df5eab88c171d02a7a4fb90a10292aba. 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/QZH5R2000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188304fe321a6ead26642d04305039bf0b16501e57f50e84d14ceb83a6756631. 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/QZH5R2000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fb98b6ecc1ab8b832a6c241956d3aa8b135852995c547bf18125a6770f2929. 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/QZH5R2000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500a0ea788bdfdf571ec0d48cda0810516adda98a3298c2e3e0428233fa5ef0d. 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/QZH5R2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22dc29fd624098ae5137b48ef9f92e37f0ce0b46fd1b8f235ad081ad96f6f0b3. 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/QZH5R2000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edf8f05d105d51ea99790524852ffd4d1eb6310e9fa35e261569cfb19d9f9d3. 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/QZH5R2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e97c31eb25e5f1be3d05e0f04e8c305f897b50fc7a9b76a9244506e925b6dd0. 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/QZH5R2000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f315286e52713b2f2d98307016a5b66b38b347411a7dda2b27bbc3f269cd519. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZH5R2000106.
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
Canção De D. Maria Esperando O Regresso Das Naus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cadaf35ea9e1ab6855e30e442b9cab84d9ba34aeaf9413868a62478e7aab73. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PTCN19400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19fade46fea54a34286b363aaf4a4d196f819f1d823d7be522109b6a64e2130. 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/PT9BY1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079876b193dfdb146124d1ded52881b2fe33f98c34b0dc0e88bad86de984193e. 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/PT9BY1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9d8766f4a64af35a75fc88effd69b29bda3053356775955b6ab50a49722efe. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/PT9BY1800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2053e279c235f38523e5455ae06c67722bb509a09c068fe66e08d59bd14a5786. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/PT9BY1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc34945b4c12af6f833f9831f732c2f4f6e6cbdfb92fce18cca71a97b2fcf1e8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/PT9BY1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d7dc9737c22e28ba2871a788ac1e0cc453c3602b5d29ebac7a1758396d727a. 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/QZDA42202478.