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 0xcd2f02e921026f2f16f358b872b88f5a862fbb082c9f20a6abbacddd73d1c927. 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/43a9882d-d881-42aa-903c-ae54096e0c63.json and https://artists.proofprofile.net/proofs/artist/43a9882d-d881-42aa-903c-ae54096e0c63.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 0x24d909b97b6c1d1251689ede0da9599ba6f0f97826c18f386023dec6273aca5f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:18:54Z), 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/QZHN62269209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e8ccb1970e932cb4d642ff5354572ac70953e9b99afa8b645cde1036d8ac23. 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/QZNWQ2235795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7f54bddb3e38fac914ebe9a3293f062d464f088abe1dcdfe9f43dfba1159a0. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZHN92365553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931bc69c2d7e9b5e056f19180724521541e0f781c2d136f7eb8a97d739174c09. 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/QZK6F2343558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0b2ea8ca31675d1c0d5d64db3fdf30f0d15b799b2f55262263c8a36b81e007. 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/QZK6F2343559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea63d6fc8bfb084087f3bad382938f1766340435088f4ec2a47a623aa34d390. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:46Z), 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/QZWFM2389163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa597bbf42041cb8781da222f758e2004374ad2e6e3d6ed97fe19a117f9e1fa74. 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/QZES82455440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623e998fbb9ee586568599a5097728cbda13172b71940fa192b6f9418c830f7c. 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/QZYFZ2464720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7754cf3dd7bc1944b2702694ff919f0e39479bf07bd6e76ad3f631b670c66d6. 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/QZYFZ2464721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b939dc966100c16fa236e119c2e0d0194241b86d613652dc3938184e1da65e. 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/QZYFZ2463062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f68f01928247dce2a4488a8fd1b573269e8202c88c9eea315cc749d2931a9a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:42:23Z), 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/QZYFZ2464723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a3e4041cc400e1836ecd992e96aeb3c7afeaba2f1c9f0cfc7f37acf3416aa1. 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/QZWDW2430962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ae637ae91d98ef92be351be1ad2d581b7466aaa85bbdaa95c76a2b767d3837. 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/QZN882500968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759d432c4aef8575af97ad53b9093697c5af6f13a283f3175c264d4d7cd66a4d. 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/QZN882523222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e8fef7be4865e6a69a7c042ce7e88307dd25a1eee6f3ae2cb8f3839e3f3362. 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/QZWDW2509006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e45af2e96ae0051d167799c7627702cdf0a26b50ca1582a020c81921947b74. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZWDW2506476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ffd218af61d3149c86de6206b08f936171403f8fec38fcffcf863b0889f969. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZWDW2509007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863013868b502bd868ee66c8b26681f5f14266634939614bd78209837e906a11. 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/QZWDW2509008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7891ff169546289a9c0010fbe3d52a3ea0d49fd9536dfa1fd29a120835f3a13. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZWDW2509009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aa9845c48de30dd9df5a9e3c7bf5ff2d67d984b7e554c99c114e339d762d04. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:03Z), 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/QZWDW2509010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33d7ea1c3b374c3282abcd4ef5dd0f7a9f7eafd2931944b0c134b136bb64fab. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:39:54Z), 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/QZWDW2509011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ec51f0a059244a5a23643e21bee36cafce7d43760bbaec985298b091045a66. 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/QZWDW2509012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02301045bb0243c9d51b70196ae76a209df58caa2554f738de8f37a0d048089b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:42:19Z), 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/QZWDW2509013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6b053fb77a2889603ca06decc4dd46493f47e01462134abef267e703611c8b. 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/QZWDW2509014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759d432c4aef8575af97ad53b9093697c5af6f13a283f3175c264d4d7cd66a4d. 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/QZN882523222.