1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4b1e359a4363eecefdb41af5b3188082423f7a0dfd0b2a8e30dbf96400f14a94. 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/a0f0400f-4334-4f9f-b489-d287a10d993a.json and https://artists.proofprofile.net/proofs/artist/a0f0400f-4334-4f9f-b489-d287a10d993a.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 → block OTSBitcoinBlock must exist at that height 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 0xe52ff65f52f15f5b8a0e28ec4b299da2a0a40121d4f125120c84c57ce6b0d37f. 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/TCAEL1973889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde33b6bb41951a23c7e7e4c99a950c60176e3b3c8e4c953ac5bb6361af36e6bf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CH6542151284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f46059d650a0f4cfcb36614b881fdf26b0f34f6a3485a429c58bef13f9b82e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NLRD52022454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a32eae123997c6384221b197dda5c8334a39256524c2534e627068dce06716. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CH6542206348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1920ee0d9aa56106e00a81ded01f57755ba8db18da6b7215459a17f1eb059c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CH6542209476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49c65d3dd0c167015cdc8a376a86cce439ad7856c0edaab2b919543148fee0e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/CH6542208655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cd4fdced09f5e98f1bce8ff5e52830d31923a75c9e9f74743c8e86799cc2a1. 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/CH6542216877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cd4fdced09f5e98f1bce8ff5e52830d31923a75c9e9f74743c8e86799cc2a1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH6542216877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2dd3a8abba7d670e63eb5ed21e65cdb20ae358062ecaa590251680d1c973b7. 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/CH6542268820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72aa53124effd744c7c40bd7b9666c722f11db37dc0aa319491f96eaaef509b7. 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/CH6542270190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593e5621c6e7c091a1446fe79c6d41500351473f18d01fb757b5daec806af436. 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/CH6542278048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f49497f89e12fb31073a4878e2139a47987968766889fc1fd3c34cf9d53529d. 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/CH6542278049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653d865a6d4a883ec0f6eccf6dc2590aff3e48421119b629feaa06a73bd32884. 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/CH6542278047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dcd53f6d374c1846913700118670b82c9c3026d7a15acfff51c533b4b0cd88. 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/CH6542320755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fef12800c1ab95bb7f3774ba120c49b856528729bdb5aebd3546c062d9525ae. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:02:15Z), 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/CH6542320757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1e0143e83b5a1c686c280f457f343e1d364824475eef6db5ba0eaa4dcc24e6. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/CH6542320923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf150aff5244a3276cf9ca6dd13fb4eb90672fb27c93ee05c47527c611554dd44. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:27Z), 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/CH6542320925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e66bdfe563021b21c89568f1c1d2f119de7fe102d919517c5933f5dfe75d6f4. 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/CH6542332864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a882f54dc4343257564ce99a9384afa97acd448ee72329844b764def177cfe. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CH6542367130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d292a87187aebbb29d4784e67ee2cd3a8c17f5f1fe4639a7c108adbb0a7cd60. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH6542373883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2b1d76acbdd36a827d9eed71de6a74092a39b27e5bbef64fa9e0953ebbab62. 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/CH6542409031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45977dc23df7b3d7a9fd7aa53aa6030411db20597fa89b6b621ecd9c841f2a9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH6542409011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd437459f96ef5f858d0def1a7cafd355d0c98d42bff74770d7c2fc5ad8985b57. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CH6542408998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2b1d76acbdd36a827d9eed71de6a74092a39b27e5bbef64fa9e0953ebbab62. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH6542409031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0de51114f9a3ff2786129ae84cda67eb62839c7ed2c29a426661e3d4ba015a3. 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/TCAIZ2445779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764a8d608c40c4a8ce84bb4731fd65304dbf96db94c0fa5daab45b68e2679c4e. 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/CH6542481120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e036bbd0c39db5c45087a1e514b23a72aa2c116a5e5a0de11869de81b6926d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:49:02Z), 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/QZHN82521608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a2a2e4ff283670dff8f8244a008ffb123cd0fb91753157dc763b34c7418676. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZMEP2513408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dc61338a65034e5b83db7fa50faaa762677cda1f55030416e596c166b0372b. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/CH6542533768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236f8c9a4be32752f9d7bddfcd173c937ddb48f599936413a9da274496e006b6. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/CH6542533765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf377de94e56ba15e8c5c199870431ae0904557615273249c52f3ffb1571f11fa. 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/CH6542533769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e041c0b678b2483497e57f517474ea74450cab5f18b9dc9158994e66709fa3f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/CH6542533772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830055357ac9a0afdb36c158e7a1aeef57d4990475e045c1f9d55c276367dd57. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:02:16Z), 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/CH6542533774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0103608ef94ff06d9d0f0daf99edf1c764278436b90a0716377e1aab48e5a277. 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/CH6542533775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184510e348a67f873ae22a7f8bb221b5bc4178280d106225354e929750ff511b. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/CH6542533776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089e030da876160b0e075131159b2090d81d7cb416501935392399d8e766ef9a. 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/CH6542371648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44d672ba8abed6af2621d774e736f11e2ce90fb8f1a547bdf61901652b3629a. 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/CH6542371645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543f29bea0eb2ed90d807116aa870561de57511b6c094626f1b4cbff1c42894a. 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/CH6542371647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9380fda91230fed4e30728c079b49d847d91cb8bb964804e59944e17c42b7c1. 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/CH6542371643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f6c4d9c422b0d6ba9f0e4ce6d18893038746957a6af6c893b81d43763f1770. 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/CH6542371642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14406329dd7fceea2fc65cf05f2a62d04e701b67be13160d047143b3ca74f88. 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/CH6542371644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c5b186735c4b89925fcdbbbbec3e4b6f5ef4fa7bdc5d81301fb31dbef95731. 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/CH6542371646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095c14125f2a2aaada049d248618f8622eef8f3756fefb348c7e9b135ae81cf7. 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/FR9DZ2411745.