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 0x112cab751b96f8674c8a310d2c2f8a18b6c62119de1a90f26173aafe5cf282b2. 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/5c4d52a2-219c-426f-9fc7-287988ef740f.json and https://artists.proofprofile.net/proofs/artist/5c4d52a2-219c-426f-9fc7-287988ef740f.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 0x1556a6e8034005f658bd68c9c7b56d99ef69b158b8aaba0bf6c60c96336c1b5c. 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/QZ5AB2433409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756d465c8f81a528c574e6c8141da2cfcd15866b506bdf4f015a8643dc4dd71f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BCIH82400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a05c4e67864e2f4551ce71a6c50b0d111f0aecab335c94adc85a0ad2fa580ed. 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/QZNJX2462543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013aa76fac6551ee2536c54258cccb446df36a5144b201e2fa62745137b2e5f8. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/QZNJX2462544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6a18340747ca28a80c14a550759f1b1b3377a40b8f7654711876c8e183d006. 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/QZNJX2462545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91885c2842faca2d2bc6c032e5dc0ea2d8fbb55e6ee12c07fe7b57cd555fc898. 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/QZNJX2462546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae92be496915da3e45d5db7faaae3e425813d348d27f35796e01ffc5bdc29ff. 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/QZNJX2462547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe212987afe2f14481e49ee246fdba6711fa371e255a8e07118c012c03c51d5cf. 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/BCIH82401586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a74bd5869f9a6d3359416aa48793df403bae915dc3e28b4fa629408181e0d1. 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/BCIH82401584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810f3e3472887a89ce32e360be3c962c2cf5d9d433c6fa0dff8607193477e98c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BCIH82401563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398a6e387c0f068beb74006bc9792e9c8b6fe2000ada95ffbefa6e09a947ae4d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BCIH82401097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ca37e2abd3f72a1c723659e299c198add89b08833584e95b56f27f794d4056. 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/BCIH82400383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaca267e3eb0d62e4a4fac00fd68f1dee219d83ea64b7fe601d2821000d8b9f3. 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/BCIH82400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba63c5bf016a783c4bf2de7234d216aac23c5989c54be8b2df5295f6c5ea2f6. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZ5AB2418658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0505773fcd2d2411f812574d95fab80236b5e15b3a341c2bf25852fb53ab7b1c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BCIH82400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ca706660fb1eb776fe48b840574c1ca5d4040b6158f9db63b0a42a474442fa. 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/BCIH82400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d59557ddbe52a91fb4a118ea0401199180fd43df16f55884b62cc3ba8432bc. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/BCIH82400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feea069abf9c8abda0ae424c56fa0e7fbf0d6f9b26e6e55390e55af60495ef9. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZW9L2433298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885e1fe37b4c5ba699fb15f7a8936fdcc8bc37ff9276ef753d1e17b973a29a9e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ESA112450887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039b9da8b7aae3ff172fe62ca826fd41441b6551d167ce2812fd9180dd8808e1. 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/ESA112450888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf8d66ea7707c7fab753a8abf1a55445154bbcca873784c01fd1597ca70932d. 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/ESA112450889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7d614d801db8fdc13964714b40107871c20877f9154fbab825ca2f151d1bed. 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/ESA112450890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e14820261c02c3144325723dc74602a5998d7f13b1184ebe9315d1c420aa904. 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/BCIH82403036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f6f54163d9bfb77d09de38fe31a452132e006e64ff99505cded8ea1ce13547. 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/BCIH82403027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185705ebae337060a0d7f1adeb8e58ba1fd33f6dc4932ff2d3f236552e634aca. 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/AEA3A2453654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147f73891406f0066b89b0776d973c9a2f95d98d1bb1531686a58cf316fb2614. 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/BCIH82402889.
O Terror da Concorrência 3 (Slowed Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd762b0c9dd8dc36c2e7eeb1694b6e9fc2400fd586975d5af62968f1fc13cfcf6. 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/BCIH82402888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe32059c660628032fe00f131de8eb65f2714b811fc5475b033c664b2010f7cc. 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/BCIH82402887.