thumb|The Compact Nelson, Japanese-English Character Dictionary, Charles E. Tuttle Company, Tokyo 1999, (Ladies' Bath), a colored print by Torii Kiyonaga (1752–1815) depicting a male (upper left co
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 0x61b12bc9faab7a87d79ee866d254f9050d043dae48a13ec4d0206a756c9a2b6d. 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/868e9edb-3d6a-4c8f-929e-d2e10f3f1848.json and https://artists.proofprofile.net/proofs/artist/868e9edb-3d6a-4c8f-929e-d2e10f3f1848.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 0xc26df41d837b5f089641af9106fb4c2bd72744958d9a37123d2f94332a4ad1ad. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM2PV1648099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613753b5b652ab76691fcfd78fdcd9b20844cfba1e690069ad381e3c91fbae79. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM2PV1682067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613753b5b652ab76691fcfd78fdcd9b20844cfba1e690069ad381e3c91fbae79. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM2PV1682067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df16fcd36b08ee3b41b1ab2848bfb66a5801a28366e53c928ada51b70ddfc24. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QM2PV1687889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df16fcd36b08ee3b41b1ab2848bfb66a5801a28366e53c928ada51b70ddfc24. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM2PV1687889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6ed28cb789c84f43a7ca1e9c6216d228ef2cdea8721d06c88f6dd1f94d0db1. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/FRX201658502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971d385c0ce5d3da06083fcc3fbd7d4c477293a60d3476042e5f00b86ad77586. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR2X41804790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971d385c0ce5d3da06083fcc3fbd7d4c477293a60d3476042e5f00b86ad77586. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR2X41804790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb077aecb45e1c9ced7e357fe9cc7a29b8417165c5ad3859a5c2cff3d574d155f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR59R1839824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaeb0207a770fea95e7f8c80e88026f326716007a481667ae62c249b034bd548. 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/FR10S1911896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a05265e8e84c7cb86024c09e8bf8b3c39049956e0518f7c427d0da895c31702. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QM6MZ2043058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a05265e8e84c7cb86024c09e8bf8b3c39049956e0518f7c427d0da895c31702. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:27:08Z), 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/QM6MZ2043058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7187a249a5effb460df1f9f4f353ed3b4c12d1b5e5a5b29bd0fde158326044. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM6MZ2043060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f1876b0782fad2bdb22592b2631aa72ba4461350841e0bd31f0befeb0e66b4. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:39:39Z), 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/AU2DY2200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6554640f6bcca6e7ee16e6b1e6831793159b25f8ebe3759afdc23c4e530fd2df. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/AU2DY2200383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fe27a22cc221e7825cfedd6075464dc658c3e40b190ca0c0219b8c486248fd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AU2DY2200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40238a0c43809d0c505c78820b72f1b10c733c772025790b65ac2a8356bcf681. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/AU2DY2300489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ee9e692da1269a6d3fcd77ed0d880945d51432bf790a3bb25cb7deca4e75ef. 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/AU2DY2300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe385c618fc180ef0e36bb9162502f17d1469d564875756c9c5afe2ce01f8b9. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:58Z), 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/AU2DY2300621.
There's So Much Pain In The World But Not In This EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf8bd8d81e3de99cd2a0631f5b6ba210686c64f2bd67bad00a3f4aa27119f09. 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/QZ8QY1800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73f38a596cd2a0936b9f2c2210bd47cc5adf68413063f9084f58b1a16ab1d82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG11904395.