thumb|An orgy in Imperial Rome, by Henryk Siemiradzki thumb|Romans during the Decadence, by Thomas Couture Decadence was a late-19th-century movement emphasizing the need for sensationalism, egocentr
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 0x862deb49030c0fae98e068b06d334dd24ede9b3c0f26f52edb8d2dd861572823. Chain 2 (Bitcoin): anchored in block 954141 (2026-06-17T21:14:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f9f1457-b5ac-4d87-92a7-d78492832fb1.json and https://artists.proofprofile.net/proofs/artist/7f9f1457-b5ac-4d87-92a7-d78492832fb1.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 0x041f4f0332383cced32a64fb4078858656eb522b9015c295d2bbbf5305cb2cea. 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/GBBPB0703227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5dec8b0351b73016c0fbab9713cfacc3dcc47989c07c713f8cbd12e19d85d4. 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/GBBPB0703228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98af15a048d3fd79f4602118de05727f190c86006e261921c29cdc626f82b685. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBPB0703230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea040b5f918f8eb41875246ed59c14aea9db6f38eb2f71452b73e3f31f5f940e. 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/GBBPB0703231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e1e0ab79fe5c48216367d3db5f1d0dacd9e54d07f9605fcaf75e7bad6f2f1a. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GBBPB0703232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045e56faaf558b50c00f85ea9ab189ded52cf6c0102564fb0589de98818ee54a. 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/GBBPB0703233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501857a17db91365064dc94747079e5c17dc7eaf83a8a76cae1233a089290f2f. 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/CH6541979207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b4411c525e521fcf4bee60e5318d795d7376703c962294631eab99178ad38a. 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/CH6541979208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabadca93e9295a9b138f70b0e50e22fab5f8774989b7339258943bf6bc7f5f8d. 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/CH6541979209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424e9942acfb6c157f1e4b935b897f4151abc2743e448290bfcd469d51ca2067. 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/CH6541979211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bec7dc3a12b30e7950fd526606336766c6d8f1c6fbddec6766118a879be618. 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/CH6541979212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb83d0ad4fa8de1b471d39e42dd3a5b1a2d98ea4552931aa56c71e388f856fd8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/CH6541979205.
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 0xc8e1b65e88ff25ccc613ef779028639e4705e8f17aa0257512c32049baa830ef. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CH6541979206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aaf316cf9171b9ddc5e0bcac0dd81881ea902c9c27b4cffc564569cecb9e2f. 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/CH6540898517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6655b3cf376df8fb0953baddbfeb23be4d35eb66d83d0d07a1783f085436fc. 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/CH6540898519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41067b0360511468420f98c80ed6394a2ace33c18d24494bea8b807034ef7b96. 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/CH6540898499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9aa820269af98020ccafa1c3f1c96e7d60987160a5d20a605b1b9e865b9d8a. 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/CH6540898521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040f85d1f234fe66c11bcaa07762b2ac22c069a442a2ee415558c7aea76c7ea3. 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/CH6540898522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6b2aa2a09eecf88d316d409ad06196a53bccac158667ee4554a1369267fe83. 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/CH6540898524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946e13b7484e3ffcdc6276e03de49a043576b53c01b880c1fb27c64790d56e90. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH6540898518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f81514fa75a6f42085148f3bb8311bfa7997e4a98015b26d2331bbe3ce6487. 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/CH6540807958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61e64604acbc3dbc769086502bd74f2fb57b9a4390a58653d63a71424ecedc8. 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/CH6540807959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a682fde876970ea830fcdb15e923c21cf91c96dc87b85e0a59d1ed0e9f8a1e. 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/CH6540807960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bfc9c3e5b00f2b86e24fe8573221c8ea2a9c2437f94cab781cbb04799b7d3e. 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/CH6540807961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484d6d9241f5fa0eba54c2d8ef6bf3493f89f2768d88d5a242ed39e3d74c38d5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CH6540807957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fc77644c2ee9f0a2736970f044f96603fd1bd3ed1b4ff5adca2de53a75ed31. 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/CH6540815022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d387373f9308fad8a4a82985fec8c5462856d2aa3a89acbbfaa27259158702. 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/CH6540815024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20694f4d3bc89b1e4d9124330b33464d3ef583982f84468baea1f9bc5ba73c2. 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/CH6540815025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07948971574d7bd1eb3c15c232983bad6756b51b139226085e61ae76ad0e4e1. 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/CH6540815026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340c8d4f4d796ec76b3798492fdccd9f5cf086178adc53eb642f351d308c2345. 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/CH6540815027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5136f536cfbe2c71bf9593c56e45d633cf0476219e10d40906e15b6d92484280. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CH6540815023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c2a4247f7df7979f3b3553712e3c452398d3e1b8c12ebcae6a4b9f3c793b75. 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/CH6540815028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14733b3c03a9da223efa90ce93d4f4edc6de627388e9f22e71037047f90a223f. 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/CH6540805892.