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 0x80ce1befebfbb248f209cacdb527b853b3eca3678e51bd845d27dfde3a7db136. 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/fbc5e130-e2f4-4fe9-8075-b353f9da1ffc.json and https://artists.proofprofile.net/proofs/artist/fbc5e130-e2f4-4fe9-8075-b353f9da1ffc.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 0xe5759e9bd75133985ca5b04941610f8b91cc831bf017e55da20406a895f769ce. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GB7YL1813801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0f28aa6fd8205e529aa978d6552653272f753963a639df99ce8d01d0d09481. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GB7YL1940701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcde1007058a351848d48b42ce1ef422646721281c7f334d5facbf8c4991280e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:05Z), 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/GB7YL2000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec95190dd222c447384607af0f097180aa70f8846b72734c0b839fd7962d410d. 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/GB7YL2000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec29929fb5bae8db7d5fa192695f4fe914eabd2db6afa3ebb72b1b7f341008f. 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/GB7YL2100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e2ef058cbca3f5cb7f033496387d8a226a7ac96925c860eed8f57d837ba648. 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/GB7YL2100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08201c8b87d6391f0517bb5766492e8375e2a56102bc0377a01e0fbbeb3aa7de. 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/GB7YL2100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a720a0309428b5785809c7ac5152fdbbf76499786972415ed82acb5368b9850. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CA5KR2362746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdca3dcfd768954f8b1cba9d2bd31d2d6e95d8ff367d36b0d45e8c9b4cafeea. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:48:19Z), 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/CA5KR2366188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423d80cf5e5007bbafad8ede2d62bb88e4c80649098bc1fef14896a720633840. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/CA5KR2429806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87d67378be84c7a47e252f57874216d8a421116cf3516cc4b7402d6e6962214. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/CA5KR2429807.
Only Love Can Save Us Now - Oddprophet Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bafc30d75a0c3c4dd04dac19969e45d825edc6231cc3fc53b667d6da4a27118. 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/USRC12301542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a08b0e367a9f98ad22495da4ab363a6f1cf34001f8aa7264cd1b81f7ead7ff. 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/GB7YL2100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644c3a53067afc40b3ff20ccc330674989e158f5021142b400c54451b6d28098. 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/GB7YL1812505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0f3ade035cd227aaf7b11127244198c2dffea288d51fb6d543480ff0f77c54. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:21:52Z), 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/GB7YL1987101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc086220e849db028a36d2687f570f93bde1bdcf6bf01b36a4c15b788856471c1. 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/CA5KR2500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794a4362f6d0eb97b8574c3d416f72ca0f56602d0bb914e53703a7c4e6c85178. 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/GB7YL1998302.