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 0x14519aa568e6fb55c58dad77ae1b0c4067a974e75b8064e159f3b6d19d5f35a5. 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/bbdf055b-b76a-4ebd-9ff3-137ca7eea1c1.json and https://artists.proofprofile.net/proofs/artist/bbdf055b-b76a-4ebd-9ff3-137ca7eea1c1.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 0x6cae1aeb6ef2130d7324bf82b36c8d38bc9cee972582fbe98963d9e77642c8ac. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZK6L2484453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c676c188eb5f7a9a99913b514c334e16a698e9dbb46b1b0d553761ce7115b7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6L2484454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6284bae41de577f96019522616ca06ade1294c3df0fce1cbf82ec9bf08f672b0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QM6P41942243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3588189ad6882176c1b25c2b941b75709a50490277882e1552f88831400caad. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM6P41942247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b56302e0b88dcff0331cd8eff14aaf46aca3d549c3a9c82195f91d52275237. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6P41942250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe246eaad97d699517f63276e857e4afed37f60dc4401b70965f7889994c58ab2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6P41942251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6377d16c904c365388c2efd031dd0674ef506ea680849a50bd4b170c7649591e. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/QM6P41942252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a220d6990d5d620c6a07fd8b9b6fd52c6ccadf4e7a0d64fdcdf71e04dc58c4d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM6P41942253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d7ed7d9add3e3036bc4e331e845e86c7a81652248c17cca3eda1bd41a5d055. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:58:45Z), 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/QM6P41937355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce06a1d94285b99ea88c99e56f65d02689dca07e3b0ead088ef14604e78f306. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6P41937360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338992706e56a7559350c5ebc7ba1c5fe8f87cb9e89fbdb4cb756cc5145bf6f5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USDHM2004028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcda47634f1795e05f725360306a20109b24e00df74ebcbacd82ef798a37e96. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDHM2004029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff66d43ffe2cdc8acf143ac97827d7f3d7f525be095ced4ef2d4cf17bf6afd7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:41:27Z), 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/USDHM2004037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fded942e3c14948d9f46fdb08a23c5ffc30ed584ef44e28d3c77d623f4f1c4e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDHM2004005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcf754c95f2bb6a156bd41cb43bbb2c07141458790f4cdc887bf5265290c5b1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDHM2004006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6a212d4272e6e9aba5373dffb62feee0858a7447fb006ca7012bceff1e5e7a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:52:23Z), 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/USDHM2004007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70c8d645308a4296e52abb40a9dfe978ac0f230bb29bfe4bf69fdf09286bfca. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USDHM2004010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639964bbcc5376a408484ebd38a58f51a315c40141c06067523b4010de85eeb4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:34:44Z), 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/USDHM2004011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d229bf990960692d90489b9d582459be94e63cc49377ec1e77e3167246ba03. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDHM2004041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8db6f8f1345ae864a8a8ccd495fab7f7cddc405d4d3e8615d323822a3825f2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:32:41Z), 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/USDHM2004042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa090f161ae993eac110faefeb0f5c1ecfbe6169b0423304b53205cbb5c586545. 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/USDHM2004043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb732cb44dc29521a1e7f6ba6e946f6400e0a9fbe8f791891e2df4c2b44fecf7b. 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/USDHM2004047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a48abc296cc6b421420cbb6f1f7b3d1d96e659ed3a7729417a97462e34034a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:39Z), 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/USDHM2004048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67732588c1237a981545d72be94422ea0ac328c254954ed403df7f4ed9fc366. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/USDHM2003977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d46b873730210fa2fd84516e22a19b571b0776fb50ea4f89cbf22592e86aa8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDHM2003981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef2ee8dca74c458b313f1f5b48a2506002dfe81118d84c902dfd4e7d0e3a4d7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USDHM2003983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc1dca78242fdd44ae03668f9a3e12836172cfe988d978491c19ab3484c0e9e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USV291405159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3717689df0f6f45fe73bcfe83a69a3ba6e2c9b8704155cffaaa207465a307c89. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USJ3V2065965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307e392c5a0b1cac263f279c76f13d08d6cddbd878f3f750852f4539f07b4ab2. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:11:01Z), 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/USJ3V2065966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93af60574690d2f081ac19a413ecb65367d3074e7e5f3e724708b9123e763fd1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USJ3V2065969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3f9dc66eabdfb7cdeb32cc47580cdd40b4c9826669defbbb8bb43152ef3a85. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:46Z), 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/USJ3V2065978.