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 0x0a310c44310765715638e491281e0b37164f26a167d0191980a2296cb584cfac. 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/9fae431d-38b5-4433-beeb-290546c02a38.json and https://artists.proofprofile.net/proofs/artist/9fae431d-38b5-4433-beeb-290546c02a38.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 0x24f47ee5bea5c50bbdb757ca16730e6c329eeb4ec4d1cb32b1e305cf098c38a8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJX2389305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc65b83bb0e7ee0bf0b44307521b2632186c5b4af14bd051407b65486c79291. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZNJZ2341718.
Beat Estraga Infância (Brincadeira Nova)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c69c4bdf75f5a343f350646dc82a76026c0fc131a00dbf76fb985eed3834586. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZW9L2308258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9829423fa1e69cf63f5704cd9cd66acd48f15ae84c1677dcf6aa6071da991d75. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZW9L2367912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00142dde121ef19ad221f747d1e20a290163bc394344575a84d5a1cf1412d51. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZW9L2367914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d5d53162b7aa4e53363f7a5fcfeada0a88edc31777e84c97e28755368551ad. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZW9L2367917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4038b0d61f2faa4370b4b7fc9dbb5b48ee7d036ca71dcd9b65ff0c85a83f8976. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZW9L2367921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab96e0ad79dc6c34b437012a7f10077cee8b8a7ae871b1dafbabb67226b2743f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZGLM2405164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649d4b6bfb1ce53eeb7e6714c260dfc5d382d3e7cd0a182df03c51a14a38ec8b. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZGLM2462622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9a79eec98b30b1cc3fe37aa65d3b6c1d83d406006d5959e473914d962d28d8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZGLS2453685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e13b50600173e9565d164686866d93e910fb9668b71b109887c1647453f4a34. 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/QZMZ92451220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7aa3ac779063eb84d4c19f89a2486b2fae8a7b15cf3a288e61e43fd9a4eb97. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:01:10Z), 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/QZK6M2434235.
Mtg Bonde das Oncinhas vs I Want You to Know
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf50b6143eb9a05a9d30723fa54e8a9f3eb8c0329e191ed57e3ebc50b24a8ddb. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZNJV2405072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc832c68257fdbbb49251692a78b545482a12f817faa60d5118556ef10934c0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZNWQ2490668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889703a07f198cbaed31e57ebe98bfb3a4f4e51e4cc7c8927bd88c00126a472b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZNJX2452906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0edc886c16c830eb82d2dfbdd381c0fe8a304ce9bb8681414fb2d099b4ba84. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/AEA3A2426268.
Beat de Bandido (Inimigas de Fim de Baile)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d05b134ca696799c3c10ca0d7be74b191bac0b634f47707941ddd86af19145. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZGLM2556424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab738f666d69c76a2105a8a4ca97adb8bee3cc98127be4486176d4739de4013. 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/QZGLS2593025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea729a65ae0905c69b06c4f80df81067927c1f61ba130af8dff233bbd9b6678. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZMZ92511319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b1c053bcadeefcfb9aa0d2b9dc277879a34c6f116488fcedd5da5337f105c9. 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/AEA3A2521599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e474b7642414aa3607f1b0b492e19949fe275d49d8f39606b32daab79777d7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJV2593752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a299fd8c59c2e61263015e60aa64335a9f66c126be524bae7c940e89fa0e7e. 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/AEA3A2180337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65850df8a73de9ff5e9ca6376e9db12a042561b9636fbc5dffd814383983f88. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXBAV2013956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec0dc27dbb0465d00d1fbd4e42e0ac6527da31b1eb75467b12a314b1d55195f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT5M32512832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e68b6dc3580dfe7d2197fa7eed6c3c04caf757d77be145d5b1576387efaf07. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:23:17Z), 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/QT5M32536548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134dbdf900d42f03470cd9336c2352f2fb66bdfdf2f73be5123b3ca1e3ee0eab. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QT5M32534533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc09f9de95bc669edeae627639e2f0d1b3cd3b667abb7eb53e9b41bcfe9ab3d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BCI8U2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7d40030dd5112b3e4c3d9b80cba1ac43c948fed2a01a6b6c926e7ad4eaf07f. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:37:33Z), 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/BCE7P2503131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce6d857896179b7d1390a0abd5bf7d9e17e6db620d235c23727b7d07ca19900. 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/USANG2163778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198db6cd4c44b7cdf3edc9d9e0d7f565d5bc4e0ccf261b62d6b913f6108c8084. 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/BCE7P2501455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8be7d528258990ea8476f8ea21b5530a9c413ec6b31f7e44477310ec485b12. 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/AEA3A2570242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0a4fde6aa963d32b3e65aa40dadba8f2b4d072379f0d9e64a892636529f5b5. 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/BKNU22500053.