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 0x40da946e3f59124970c57cd16a86fe9b48fcf5e33a10d068e81df4b295806d00. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf8de92c-b1f5-401b-9bec-098851179591.json and https://artists.proofprofile.net/proofs/artist/bf8de92c-b1f5-401b-9bec-098851179591.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 0x43cc19e4db95a96e0f3cf82ee2dea2187aebdde1cfb0aa1844b321b09c18df4d. 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/DEAN62201195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae549b4b881beb8b0f044e93d769a69e7929d124cceb5ac3afd32b0cb2f8f8a2. 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/DEAN61800899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b88b8c2895304c84211782cdbf40da94f02a170569b735dce7d52a59757d755. 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/DEAN61500721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ccbaa419e6cf5034e983fefbac9de5a93c512792f60e0088cb29547f9e6d61. 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/DEAN61500722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3dbc85717b2f70c4fab0c655415c94ca638d32e2ba737891dacc2e20a819f6. 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/DEAN61901013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8f37f325188f80d3ba6beeeba76bae672201bdbc3f36b294f947afd6a3dabc. 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/DEAN61901015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7528bcbb522d4b41c1cf382b36a0fd2d2f842570431891adf7c73dc9af3ecd6f. 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/DEAN61901016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b9d2a019aa0e03e504e9b3152528304fa0d5f365a16cf844623ce29b977c22. 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/DEAN61901017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed8888742784cb7439bd2593e30d423381ee8acfffdd2184b9a596efe66654d. 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/DEAN61901019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae549b4b881beb8b0f044e93d769a69e7929d124cceb5ac3afd32b0cb2f8f8a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:24:29Z), 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/DEAN61800899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b88b8c2895304c84211782cdbf40da94f02a170569b735dce7d52a59757d755. 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/DEAN61500721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ccbaa419e6cf5034e983fefbac9de5a93c512792f60e0088cb29547f9e6d61. 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/DEAN61500722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3dbc85717b2f70c4fab0c655415c94ca638d32e2ba737891dacc2e20a819f6. 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/DEAN61901013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8f37f325188f80d3ba6beeeba76bae672201bdbc3f36b294f947afd6a3dabc. 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/DEAN61901015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7528bcbb522d4b41c1cf382b36a0fd2d2f842570431891adf7c73dc9af3ecd6f. 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/DEAN61901016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b9d2a019aa0e03e504e9b3152528304fa0d5f365a16cf844623ce29b977c22. 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/DEAN61901017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25608994e49fadaf40fc675fd8d37f4308ce6ad55298e4c8f7d083279f41ef7b. 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/DEAN61901018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd8146b714f1f217a099fb0ca1afe3a42de583608f656b8010141bc41bf56bc. 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/DEAN61901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a862c04529a563452d0dc64ec799681be35984369723aa8290fede30c70ae8a. 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/GB8KE2404666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67876f0329d9039d5fe13c1823be5d220e611f657731c56d2c75eb835a3443cd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CZA161100809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8ab0fcbc4296c5d77e010153d3a9b4b89e51efdaeb606d30d28a009b88dec9. 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/CZA161104370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4795fd1bb37a73d59715b8e9321c746066b5aab46960c5a94f6fc0dd23981fce. 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/CZA168400508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a48841582dec985d8d612381dd65ae6ed1c4ca5aecbfca0d489cf93e2097ccd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLB170800183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ac206c9a9b43ff936229f25411bdb5673e738b33f8c80de06e2d466f977e26. 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/SIA040700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b6e895d3612a12ee933b42b0d015eaa2ea0bceaf5f191d2f21df3324d1d711. 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/SIA040700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccdbb696d62e066eed5d7a7a46c7f1d4626a3a180c0c911475578de1b1da162. 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/SIA040700038.