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 0xe81b64ff41863d682cc24663c0292c8be9f60c5f507f06e7dd26c6f8be30c76d. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a2edfe01-bf6f-4dcc-be7f-4955386ca515.json and https://artists.proofprofile.net/proofs/artist/a2edfe01-bf6f-4dcc-be7f-4955386ca515.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 0xfe6483274df3666f08789fd17b9410f0646a74f694e5fb47fe63fc816e971099. 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/GBAYE0602420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9d2f16994ca515ccfc457cf4aa6254b8da3bb783f8dbc6d271ffe710b959e6. 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/GBAYE6900770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd708dcd84cd4327b561a13be68be03a61c3fd0f543c447a24c05739a0855cb95. 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/GBAYE0602418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa408ebe11c7b36b3597bc4a54078b122a1bd8e271d85a24e27ddeb621c8d23cf. 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/GBAYE0602419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6483274df3666f08789fd17b9410f0646a74f694e5fb47fe63fc816e971099. 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/GBAYE0602420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0ba48f606b5b7423ef0205767c1da188396eb3a0aee40a9fcca8b082e87866. 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/GBAYE0602422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abd8728a33143b167a0e8c55ebe278c07f7ee18c29d5da6aaf7c72a5768ce2f. 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/USEE10181576.
Passion For Paris (An American In Paris)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56f3255805d0443bc8ac3724bebc3c5de431ca9d68baba3507e2dd5efb86b33. 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/USRH10801443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2735dc23e0d8e8237c2cc4d731a2a69ac614044013521e4b0fa01e7f429033. 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/USWB19900656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3ee005b9503ee634c285d949a09cf2e53db15037e7c3cbc96843706cf3d26d. 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/GBBHW9547601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e97d75de9bf36fd0e0b39a70743f05ccf37387f31bd8aead3b896974a2e7a55. 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/GBBHW9547602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d14631a95856fa167d1f962aee7a1c64d1053ac0c0d9f09b9c872fb12f8c2a. 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/GBBHW9547610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cedbab6263027b721d049ca7c28d15b721317d3ab6d213689b9a9eb4874cda. 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/GBBHW9547611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063647a6e5c88ce7aca02bbae6dd0565db15b827e3d6959ff2b317826a342c16. 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/GBBHW9547614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d12c6bdede92c9b2221c70b782b308bdce880e3b0969a0aa2085c6d5ab57d6. 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/GBBHW9547615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f41d800ece9da185e887f13f4758020fb96e9905c136d6679d5c32d7a95166. 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/GBBHW9547617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d75af17726b5cbbebdf550f2bff8a1327b4c0652eb0dfdf64c57a8b39164d6. 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/GBAHS0900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d43d41684728faf0986954d23a1e2a24110487c06c889819019b79566b87e90. 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/GBAYE7600293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9219117e6f4a9a779fa3368e17331c4dfc00c050516eafd5e4bb0aca70cb072. 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/GBAYE0602424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d416ef37298fa724b5e0f6c4d67f2fbf944376d9db40418458f9d2dbaa47d9e. 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/GBAYE0602425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f02780d402a3f98366f8869fab41119d39dc650e56054eaebad0d371e38ba2f. 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/USEE10300748.