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 0x3d0d0561c940bbcc048fbd6393a2a485000094e3f72a2d6fe1e906b8c83b0847. 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/0e2dcb75-e3d7-4144-8ccb-b06450e06ef0.json and https://artists.proofprofile.net/proofs/artist/0e2dcb75-e3d7-4144-8ccb-b06450e06ef0.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 0x1a5cabf89ecd8fae8868b1cc2d3ab7e44d668488e39251daa1cf574f2856c3fb. 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/QZTH92279662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f1d49e3ab5484de77b6eff9d0b61ac76ac9b49c9abfa731d4dd47e5926fd5f. 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/QZTH92279679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f469b3bb1fd71824b4e9034dd5fd6e38698f278077a813e6ac41bbe956b8904. 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/QZTH92279682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c95e5122da2a70ffe58696eb8567020881ac2095038529ae5d9451017d1660d. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZTH92279681.
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 0x619e49f7b707b5d523eee9a1fd31031b48eedf8a84b0f4ea74c075dbc733c00e. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZTH92279684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12e36303598424dd351a1f12ea2d6b248dafe392b0c3549360b5dbc0b1ea921. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZTH92279689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5c95762f39e2e26da931278e8013c3291f752578c40a36a8a9c7553bc9c200. 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/QZHZD1948258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe071c3de1afba3b842e5d2d1e3e9c94797c5522340c04988e9d51d76318a8628. 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/QM8DG2016524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de83a1b248aafef936c352d10cc9954240029f2c4cafc6ce20bbf6fac759928. 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/USCGH2137017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49671c495c2ee8ad78d8ed491e45bdf733bf621024672826bc7a010008cd6171. 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/USCGH2137021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ee5ebe6ad71c9d0d6a1e207c341b325ecae4b0bffcd969f5e5c2423b37a0ad. 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/USCGH2137023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd230d815290bdbeeaf23eaf3158dc92c175546d089697b7a4e6ce5ce7db1ef3e. 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/USCGH2137031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d81a963d62ddba4427c3170048f3236e2f599154fcc38b075512375325d5328. 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/USCGH2137034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff496e986cc920f9ba64ec67f59a209986ff90df96efbef027bd200ee18bb885. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USCGH2137018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5629c64cdb3252b2e3dde4d72531ddbf6ea821b8dceaa663411df93ba89261. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USCGH2137029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8df83e3c2ee77ced21bcf80a14e5752a750ae7bb6630e0f5a5ebfd4ee9c345. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGH2137036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54579dd4bbf3d5fa5e6ad76e259c208d8a8ea537f99ad3e04b5f5536045cb51. 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/USHM91973083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f08119e828197647d35f63f5ebc575c7bb92eb3a1d7c43b767884b8a0e231. 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/USHM91973086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b6e2aa2f2429c3449ea9af9221b4c19857b3d7f7b97c7fa7ee35ad28d6f243. 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/USHM91973088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c5735f2f002dba98ef149cccebf54e0347a96da4565c9edd5caf2e4455c31c. 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/USHM91973089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70796782e6f2ec0e9b6014e975b5dcd34af36e7dd1e495680c9b65ca81e5a0f. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM91973084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00df52ee5bf7391fb5e76c4960df8179e2548bf316e1c895385965e95ec07cf6. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USHM91973087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83f7458f24100fadf97654385100707043f7ac88166f96f0d9217a601cbfe6. 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/ES71G1633803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5f0d9a78c71ffcc42963945fb72ebf3451710390e630e9d06a2a05e6ad6400. 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/ES71G1633804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a994bc8e6656942b7b74a48423516ddc3a170e1915186d3aa4b8a83504179. 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/ES71G1633808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fe1a31060f2a4c432b82e7f886605da9cf0628f15b19971952dfb540d073e4. 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/ES71G1633810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480f7779644d7ba1933b1f41ddc2e598af14d6217db0933d674b1f4af4043f1. 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/ES71G1633812.
0 Graus Tia Maria Produções - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fc954a424bf7b8ea149e7952a4dae620589b98d3abf7a6f9769751e57c1cbb. 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/ES71G1633814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d4731f9bb4bb0ec7f4b3c46ffa40caa161c4db4ac2962c09c1e17f8c1d124. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES71G1633805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76535af4d3c39a9d8f65ff1545390180f177aa00f856b2ea842d3170916fd436. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ES71G1633806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4c0c56c53c1597d12c5ada21d3bc4c4cdfdd7b0b287a8abf8610cfdb33a223. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES71G1633809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a2de822647c4a064c477fbb0b4a364ff8d653db426a17b7143d489c7078ba2. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ES71G1633813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b9ef1d4faf001a1ea7ae23c445b4f4ab751789061d9a161ec698b00fc6d1a9. 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/QZH5E2306250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ca0e339cd64ea1d68ba0f1b5105d28797747d860669d1c11bba2b94f45b5d2. 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/QZFP52332958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b2d4ae69a0014ddc6432c67b493e896ea6b825969c988477bd189f08a2fcde. 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/QZMHK2302237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24222599954547f36df9b6de913218485cee56bb6d63bf95ef9cff8f4d8ba842. 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/USCGJ2318098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a17626d6aa6bd2a7ed16f7042c9966e2693e71afe9d6809d9b813e2219b8a. 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/QZHPJ2295651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c326989a7f4ef1d2859e53b5bac69bdfee1e3156c313d1649c1b50e6b5bc29c. 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/QZJRB2282691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef925bbfd00d83210c61b1f6008daf2f2e4ba2eb3607b1a65173510ff374715c. 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/DEX262000436.