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 0x842f8e10eec053cb434f1843a585d05e1e2d05965b54699ce19557bae99aab6a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3eec8a8-9aad-4d48-b394-ffd913a2c059.json and https://artists.proofprofile.net/proofs/artist/d3eec8a8-9aad-4d48-b394-ffd913a2c059.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 0xfd5b3be0e96a72d273db1824696fc71f3b785f7ddaf42effd3cc22cdc8901d98. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZNJX2440923.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db98968177d7c6a21f4cab19ebc0b34cad488692917dca16024b0662787b362. 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/BX7272400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb336b8387048e847a6fcb71c65fc14ddd817e63e7b0c488fca1d7b0c6c1a4a1. 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/BX7272400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb97c6b5f8e5d562da48f809859f1355b9900a67203e45caac813a5da18b5cda. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/BX7272400137.
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 0x17547e6b95be0cc333a62c4bdd3d527dc845ad2b1fce53a6809b8cf5599fd4e7. 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/QZTPX2416774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2431b1cc6aaaaef422d52b4cfe72dc9759c08350286884f70e3f9c9a3908612c. 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/QZTPX2426568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538b5d0731518fc34c8c42fec05eabe10b32132c596e89e0e837a47960a3b6bd. 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/QZTPX2416974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439fa660856b90bd6817a3e40187910f8fbc12a900dcf32b07af2ea422339cf8. 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/QZMZ92454594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9462bae42d06ee90ffa137ec1a841b854c6c11a9f1ce39a989958cfe49454fb4. 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/QZGLM2429196.
Com Carinho pra Não Machucar - Vem Botar
Automotivo Berimbau 2024 X Montagem Pock Pock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9600f468de5667cfc9f159593dcf3413cc800a3d22a7ef1277349ec0be30b447. 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/QZW9L2320444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2dab6b3761a131c0b29a67c17af4ab6290ef0d2439295c672ebed8a110b3e1. 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/QZW9K2374673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427e01c01b3fe623a66943f669081f370299f6a403e4ebeda1229f885e1d6dd7. 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/QZTPX2382103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7597eecc561033101f11cf97bea10f89407d7c52e42b8260c39fb1897eb0e24c. 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/QZNJY2335806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf615dc3c2aefad87b1b8267bfca16f78ac4a865d1c05a9803954d1f3c84f44. 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/QZNJY2335808.
Apaga Luz ou Luz Acessa, Polpa da Tchereca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cda5dd46d1509fd693db43cf977e1d4d82f4201993c25942f0322bab690f90. 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/QZNJY2332761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cb8522c763fb0ba2ca1b6fdf732cea8f210c7228ae001b9f293acb9100e76b. 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/QZTPX2321178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9074eb8f2f36c3ba3a8316ad08cc1eb5dd4435885c0c7c0e7b68b8492f08641f. 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/BRKO12200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb6a6231b6b394dd7eb97b902f24bd3efa8d069475e7422f41129614f3bd08f. 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/QZNJX2079095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe380a699437cceff693d84674a1ca04b0b5363834bfe0d5290c4c6f921e531e2. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/UKXN22071284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc88a0ffb43a15fa2bc59e63f947a0da8e52340650d003fc02a30b4a72b8680a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZHZ42104845.