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 0x918e41ce9fa9e615aaf9d19de0b8f2f5eb1a6702169466a492f0989bff04784a. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e471ae6-f84d-442b-a10b-6584234b661b.json and https://artists.proofprofile.net/proofs/artist/6e471ae6-f84d-442b-a10b-6584234b661b.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 0x3a245cadaa5e2f7675dedf9ccadce5c3fbe65974266ac51994a47b1a363eee92. 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/CAP431501194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2d0d76de12c4e749dc166a95e5e42faae2869398879e2141931aa9808407a5. 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/CAP431501197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338e401a77a43a05790518dee4f5e54f3c1174aea2327dfc61c27a7b1bf6f196. 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/CAP431501198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4229b40051597a2b95c6802eaaeac7ab3869d29dc2ac401994973e69e6951d1d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/CAP431501195.
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 0x106b2424268b815e679de960ac2c5c26b33f3f44db74b7402e76c31cc59f3afb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CAP431501196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e42cf40520ac3cb765d7b3066f4121115d6addc1a35d586405767ed3a4ee7b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CAP431501200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7f344c41d475210a38c63a069fbde81410a14c2d78a930f672c49325bc868e. 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/GBBRP1024004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dff57ca74b09b8d91991bdce8db894662694e37a118bd184b599eb2a678a9f6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBBRP1024009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791ee8db5c754b1265966e3daafe0603275b0edea9f020c7a1b53d06573edc07. 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/GBBRP1024010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c55474bfd265d287792c7e2af93d27369174b0fe1ca9f56a856bb801d2fd7b. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBBRP1024001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734cdef161efff4710bbbdac0e3276451ea88f61496d508b32009564928572f3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBBRP1024002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117c959da1aacae4b57c6fdc58e9751592c7623f953dd98e1de8220768e9ae54. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBBRP1024003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f403c263e07848b7bd650c8c1673c84c028e156d06862ca47b02204be39f4. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBBRP1024007.
Dents (My Old Kentuky Blog - Pendleton, IN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08105a709d90a53ec8186b30c8638d817d79642bf5fa9559700fbb09f193ce1b. 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/CAP430800440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e30b5b7e939716d48a9591e42c036a27ec55d4da8b88d7e549a751aa2a33b0. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/CAP430800442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c50198afccac5e2b57a8a5e6be8da5cc63d3d9e4c8c5fee7a25afbb3ba1571. 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/GBBRP0818001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df5c5c731043049ec533d0831f7fab8d0010235705939244a94749253498e87. 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/GBBRP0818004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9fb792806fd6b8535b7a4338cbcb64215c84c85d53a04616e945f92d68a7c0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBBRP0818011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cd22eb838ad59a9deb250f5efa0378e7ff87b38b74a8d730a44483e94adc95. 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/GBBRP0818012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969e8f657a3a5640b76939cd0f251c5ccafcb788dd00b74da2fe1d7010dd9d74. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBBRP0818002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfb8bd8fbcb14119afce7a112c6f02e74c05e533abbb03a53ee1226ff8ea0eb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBBRP0818003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9056ce1fcb61aafb6115e61e4ead5e6330891e2dcdc34c4956d9f9137319fa67. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBBRP0818005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8af8a72005702741f0ecc5c2ea2b7cefa38b26c11dd081264119d0593fe772. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBBRP0818007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7b532973e15bc5929a752ead6cd5cfce90e7be995cf535cf0543d1b201ed35. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBBRP0818008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc4fd5f957b8b69195af94a210a3678b17720cbf496a0d49d09f0ad6a59acd0. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/GBBRP0818009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfe2fdc19f7ce3aa199eb50f2baf3074ad5dc030c063b5d8fbf69fec462c7a5. 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/CABL90705202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d982e475706b9f2aafe1d605a429539285ce28559d318a10fbc1fefb3178c6a. 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/CABL90705203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdf8cca87d8731c744823b411025e68f6345f07844e2fe117406ca647c68be7. 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/CABL90705204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda3715a0f68984cda64fa92666f1d855dd990313efe043086b0146394016cea. 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/CABL90806002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ac7e1882c2219229b2fad46278eff84e60fb9f4997e8ad6df59392a7fc9ee5. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/CABL90806001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f89b2f53ca0e51211910d94b0bae1de45f8a873d9fcb36c67bf04b2e88acd9d. 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/CABL90504501.