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 0x65bdf453e8d29b61b5047dcf713deb622d17ac156d54bad227efd5f272331d73. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/188ec879-8ec3-4011-8166-2998becbb916.json and https://artists.proofprofile.net/proofs/artist/188ec879-8ec3-4011-8166-2998becbb916.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 0x47819b5436c9b5123f9674d71b77263abde2af900eb33e0130aaf6acfa9a8950. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:24:02Z), 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/FR96X2113746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8cc9b26a67d6829460e83a64ccab175475d30d54e18165ae8a20136ecd5358. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:12Z), 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/QMDA62128832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a54792bdf95ef57cb5c1e91f7c18612cc0cd3b3a63a94c1843d4f06c513331b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/RUA1D2161803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c3f53df4dee4cb424a2dded03c94f478d2addb53971530ebf6b60ab6070be3. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/RUA1D2175108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da370b4c3e9858c0ad36289392722068c65a5e1cecc2a5d73b799d9bad8ab89. 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/RUA1D2203347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9273595e1f16dc1f9f8fc7e44fbbafcd8e60dcb05003e28d66bc530c54bfb99f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TW2273307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4703c064864013a9abc89f8cb70ab8b86fdbfa3fff61e6cd7067d1a3d43f03. 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/RUA1D2211200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc536750eb79ec35f55f9f7e0f4493a5f66c17e2688f78be7a1faa86ef660a8e1. 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/RUA1D2231057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff459b7d0086943197c959f2e9aae137e532410171eacacd848f00306f5d5d21. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUA1D2250801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc0990ab7d68aeaec680c4a6c383ca913f31f846f6d394e701e94cfb0efd523. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/RUA1D2274152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923b336559530f0ba23ca6e4353756e2dbe7c1ea34cf9f05de37b5fe0a57cbc2. 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/RUA1D2286483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b0a1db68cf89c9c17cd75959a035b2eb98a794b68e3970d57422fa1391900a. 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/RUA1D2291167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e19f6c816292715d55cd70c753924cc5f92a5a42106ed9d063079c95c409b38. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:29:12Z), 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/RUA1D2298755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14260b3a03f7c760faf73a2f2a203c3aab9add8227d1bff648d1bdc47c87f254. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:09Z), 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/QMFME2239126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ec8549cb8a2c9b8809faa3fec33bba4bd5e5c0d5e0f936f15f88ee5acd1232. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:03:52Z), 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/QM4TW2338888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a919ead99f2f1739fdb5ab27dd003aa38692e60a51cefa136b82c2c18b072e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:50Z), 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/FR96X2336831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a958a69fa6ee1e34d33dbf4995eee286c6e3774cf6d62cd2bf8255982fd38e. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/RUA1D2357591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a4bad47601986bed367de52e3323218178d7f76d1f9a15b5515bda03003661. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUAGV2302772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb011c29fcfc68d29e0fc9a670dd5b2955a1d6d50ef8f4d75f139683d510b2b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/RUA1D2396511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d77f4830bc0b376a346d895078583b8f01a3b2edca7a41c40a89a26c1195e5. 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/RUAGW2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f8effd6737025ea113746216ca887a47a5a1e5cf27f77c145bfe085b39af0f. 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/QMFMF2320688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc08b45a5b0c7280e08577ab9cdee990046b544dc6134f63c478e32b9d0a7122. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/RUAGT2355108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2604f19aa82ac5fd8b6a03b6f6e14ac57af0efd9889b7cdd3c7f640f22e2dd. 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/RUAGW2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3343a1b611fe21698cee5f41b3b65a18f04d88b0e652c23dbdda3e248580aa0. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/RUAGW2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4b7e3ec268dc0722f2044c1baa1916c674fc3c4db2128798f43fd092e6d42b. 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/RUAGW2400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572adff6005ccdd828c7e262afcb98fa01fa3cb1cd2c0b0c83365ebd49971c15. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUAGW2401007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b56c292ee51b34c29e62f5514f122f3acfebecba44560e749131d3104c675f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUAGT2437214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c16a1efe55a5e30bdd7e7ad02b2ce097781810bda54050436008e75a133b81. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUAGW2401281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69e08c2738d8963366c8b2c6aa4cbb2e4de426f4b0bfeb443e748d0894b51b9. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/RUAH62409366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc901796043f4133ca390aaaf2a46d647e25b365b15db092ae03aa5b9ab8c619. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/RUA1D2516226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2014d37f25ac65e3d7f2da61fda20b7ef71e3764dddc63ee69e3615369385c3. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QM4TX2564386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e9aa0dbd60f783856af6c4f3f88274b504086326f7b41110b8a2174acbc892. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM4TX2564387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f294415909ef6dd736c51fa02debe761dc9d0119f2728d5b2203c3eab9d30d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/RUA1D2521364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5daf4fc2cb5395d526c4f2025a40758bbebadcbcec46602482bb19e6308cec. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMFMG2519847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1326cab36f9fb45f99ffbe17f93da1e94d18e2437185fd2380f8b155e41f74e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/RUAGW2400200.