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 0xacf1c34c635ddd4447bcb7dc8f883c96ff43a0a061ef74e1c40e3b593d917503. 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/7fc97cab-35cc-4f0f-9060-1ce644dc07fd.json and https://artists.proofprofile.net/proofs/artist/7fc97cab-35cc-4f0f-9060-1ce644dc07fd.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 0x2b3289d353e8ba4ed4e174f38138ab86a3fc33df61cc5205fdde01904a38903f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:03:25Z), 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/QZHZ51987265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd85faff7578add20062cbee49f17bfaaa2a49890e4026bd65d980ed30882039. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:46Z), 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/BXIV82008151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf28f958a68fd2fabbb3fca5e2eccc1df1648b354afab1596b72268ba8f9fc10. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:02:13Z), 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/BXX1W2000001.
Porque Você Me Ama Agora? (Cöpypaste Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715d090c2b92e8ee84cea2e395f945d6f956f52074e1c2698f6036ba3d1c5a1d. 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/BCFO22100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cfb887fc7d6fe8ae95b3a2db72a2ce7c8efcc58957a2495b148a18b5ce4604. 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/GBWUL2349519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03dcf2ee0c2aa42cd4d7b26f22d503f763125096b5de14e8a978b7e6f8ad125. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BCFO22500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba801ca45369dc93576042edac48c315ca4c39ecd6a74eaf7dd3d4bf73e1699d. 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/BC2GV2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b9c92059e45af792512303024cde3064b0b10eb055e691904e575821a9794f. 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/BCPTY2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5643433464d9029ec876854cc02e9607c58be5708e46c618250e571f2f6ee53. 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/BCIOS2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2067a476582da512f219ab6971e39f03cc876ca38fe7ab6ec0d60e8719d8fc. 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/QZNJX2167833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be2842df767932ef2f0d4a4ceed5b782b4996cb00ba614ebc089554f57bc33f. 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/QZTRX2475774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ccbb257fad3f3e40ec482bff7c2dfab81dad339a83adcea6b28b8026b3fb4. 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/GBRKQ2160560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a84f28492596cd6c8a4420a66339b51dd9d88cfb13d7bbc3bbcceb1607b1a5e. 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/BX2HU2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19feaabbf38c758176a82cd80d76a8d0ad3a110b04722cc0a41371c7ec6928f3. 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/BCIOS2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df9f9f7bfc573b6ece99cecb8192b526394bc02c477873bfa2ab20eb1516412. 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/QZGLS2080062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a8f3b305be7ab2efe2dc2ea651462e6d0641f1eecd358d22739398cf295a7. 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/QZ5FN2265014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd3611c87acdd5e481c40ce06022ad559499d22014b3f2b4964a6b07dab10a5. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZNJZ2456564.
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