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 0x8d5998bdb5514e37971894f340c5aeb072bec280509eeb8eaf4e218b01f944df. 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/413c91db-d923-407c-af95-14d2a27c513e.json and https://artists.proofprofile.net/proofs/artist/413c91db-d923-407c-af95-14d2a27c513e.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 0xa368757c2ae424b1c8fcee1f7bae3eee55d173617ccfce02886e2da4ab684f0c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:38:53Z), 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/QZHN82348531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78b1640467f7988a040945b304d723ecc652d23acfd5b4a5ad5269b8edcb9cb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6Q2309348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e4a7a31c6bb2b83ffa9f6f3e3bec30512c48458b4ba8e6a70ea01076dd3522. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/SGB502504552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73717e3093f5db3ba82487d10ec73a22ace57f548380c594bbe11edeb4dd1d89. 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/SGB502509244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71400fff9f0ed7b258c679b95852578b0dab61978af432055e26166c9daa13c2. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SGB502504268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a053eabe5c17945b9f8abef49cfbd8c67e690fcb333364ff7f6e18e40d0c0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/SGW502515978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460f82a1d040b6f5ab30e845b3c60bcaa121d575566e446e6107ae615544b2ec. 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/CA5KR2534267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694eab45853a19344d1cd8daaf63754fee331785bc107208b67e4d6c325e7c15. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/CA5KR2534268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80449dac221d228f778a2243b56acc28b990924b39728a5acace50c77905558. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CA5KR2534269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108fa5544858bf495f2d51da17656f1c09b5a9b519d00d076bba492d60e4700e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:56:12Z), 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/CA5KR2534270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad270c297e77cde2c53159ac383589439519699811fba6e0bea38d4eb660f64. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMDA62596215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c7710f91f3beb126b8d7d951bc414c12f0fb52b00a687272464e8cdcd21bc9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMDA72586051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cf59e161065bc8878d7b8cd1fe23495e3899a080a19d763565445cbb278291. 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/QMDA72586052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda657f1682511e030ad65eca4307500ed7cff63b3977d788a95a1cdf019ece7. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMDA72586053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc4f57f5d928df957e1ee545770167bd3839b40297ed792c1f13095bbe5f198. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMDA72586054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e29c09b2f8ba814e2a132092b6b3db882482906e09f9d950c53382c3a0f7366. 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/QMANG2247422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e44060fe5faf732a56384af8900aa9e0f48f35d69f78f6941f31dd315f2ab0. 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/QZNWW2325201.
Funk da Imortalidade - Ultra Slowed and Reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e0b35b4a600e8ff1e100d86188d297f7be77f389d8070d57c5c9f2931bc5ae. 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/SGB502395360.
Funk da Imortalidade - Slowed and Reverb
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c58b9a43d8bd1470d14e77190d9e1124b061a9b5377e721e3e928ba0da7525e. 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/SGB502395358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883482ccc7b5dfa7bb670ae4434b8eef14e5fc71d1187c73c990a5ab593fca62. 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/SGB502395359.