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 0x131d30b20e2822f4358eec5497fced792ab5347eeb65de5b2a0aeaf503468757. 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/43961104-3daa-4837-a396-23a4624c5018.json and https://artists.proofprofile.net/proofs/artist/43961104-3daa-4837-a396-23a4624c5018.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 0x75c20d4a5128890bbdb88e2c9e219a331f413991978bc299fa0f5bc854357e8c. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/CAW820700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9108ccbbf9a3835d5f5d86bb1e225394250d471773bc475bea4ce5bb050fc866. 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/CAW820700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce6c44487f3835c474c567c09636409ae8b2967a427c64a210e68feca511c31. 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/CAW820900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1c6072415d417bf8ac3f5390a87a4f8dcd646446bc4ecc00fb4e7808cf5112. 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/CAW820900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4d97109e888e58724f2b05216b85b20ac9555ab3c60afd9a93a01932dbbef9. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/CAW820900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b9a342fd13aae726afb40c4fab730911faddcd48c329d44d790cebe0a19a53. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/CAW820900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11a145696718c3f7e05175bf3c5f996c51c9eb30804d6e0ef110596749ec731. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:29:18Z), 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/CAW820900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f055f0bc0d0561cedb22f737dfe1c8cce928eb0914622257f3c1657f4b6b63. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CAW820900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13aa3ae2552345e4cb4b887eb2db0c53975fd794cfc434753997adf6d615b4c. 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/CAW820700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dd3e220ed5f515e6ab841afd217fd041b73494d07e4798d086dc99b1f9e7f9. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/CA3A31000602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09513e3c958231cb5d6f1dc9c6562422ad4d3922ce390977ececf53cc1594a5f. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/CA3A31000604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8fd8e0e324f610be09a2e4ec567d577157deed7181f845d89ae4314640272e. 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/CA3A31000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c2bf29bd41c62cdd0b0f1a55f1a779af1631c156995bb9b7aee45b9f7ac82f. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/CA3A31000608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3020024663e3edd1ec20533d04a57c2c33da5e951c70834a069527e7687d88. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/USDHM1205241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298cd335eb55d717594cc72105dd4ec9bc953836d2df524f02c65319397becfb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:12Z), 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/USDHM1205247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6904ba786f66d911032688922e3d7873f1b4fb178780a3ad8d2e0fcf5eb60f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USDHM1205248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3866acc2eb0b6bac97666835697dd35f064f55733dd5d7303b83414ace3867. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USDHM1205250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e42ee63697581ebecdbc47972235f621af17a37be44f0adbe6ca8c7999b5cf. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USDHM1215524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb770dfd7690d899b59b3b8cc4a0295f61a69343017320a4f28ee36824e8cf8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDHM1215528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a45188c8718dfc9818e9ea1adabb78d6041bde6b731b66c40ebee817ec112c4. 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/USDHM1215529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7047552953a3c3b94caf94175dc79a52945f55fa723dc81266ac1a4ef8d9c1f6. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:07:09Z), 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/USDHM1215531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d5daf9350f218e45b1994e10869d2e79c1d982e2398d964e49d49bbbea04b8. 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/USDHM1215532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00021f9dc725b78512dce1f302b5490a7b371cbcd1cf7b6f5f20ee47e44f81ad. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USDHM1215533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bd3655acb6d4d96d241804ca4a58aca508e6609eb1487858936b5f1bc25325. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:08:12Z), 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/USDHM1215535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b08e8ae08f1ee56a71f5634a3685db54b61716a8d42ee20b23163d367112ce. 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/USDHM1215537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831712f61dbe7b3ebb5d732f65629e83f6d58a1f907bcd8bf359bd8587027394. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:41:42Z), 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/CACEB1741059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd21aaf68aa73fcd4d651d17710a88dc0549d78432e6150da8b3a751642c7a7. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/CACEB1741061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe944cc755a9cf5d95b70b1d45d86f8415378bee9fac769077b1265bbb7936581. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CACEB1741065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d2b53c6b77b2183d96e00acf919555c6ba772aea7cb8222368a3d347ff085. 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/CACEB1741066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f25d7396bbb48b93dbaac7c8a4dedee56414696af9c1f1f504f56b31f01ed79. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CACEB1741067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13afd1587dc93f10261ebe348810c7644f9dc979f47994454cb88d63639e48be. 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/CACEB1741069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556ecbb6d6df4f32a2694946bec1017f5b224840ab358f3beb8c464fe18f035e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:22Z), 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/CACEB1741070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de35fcde7676638c30955f530c24d9e1cf19654cec2a5ef91b0e4517ae12932. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CAW821800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f66e244f0e30b2b5240bc2b46ba9b9624b5c628c11d47368bd3bbdc07b72928. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/CAW821800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa3c9404ec8ecdf0c60e5eca8ba75fd60c1cad8244550a9cd1d0dadce654c0d. 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/CAW821800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebcd61ffa45980a5ffd8f800ca8284330df29466b82e9fb3151ae4c46579251. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:08Z), 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/CAW821800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ccd04764def795e6e683e8618fa4801087aefdc44b80bc86a82fda31e8ada0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAW821800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3ef515760a6b5a808dc3b23c9a3192737e8480e2dfa8a44bbc360c19352e41. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/CAW821800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371617db3a228063be1c3805fd2812643ff5287898826e01f68f4cf11d0007c8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:07Z), 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/CAW821800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8466de5113560fe6140478ac2d5d10d325f035e9cda11eec62b04ed0313c2a64. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/CAW822300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a311574bda1f6979ed9b1769de1d6870b3f6c0e6099e01e86784b6023b1475. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CAW822300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02328c706302513fce289dc2b4cb477e0b30de496ca774b8313736423a3e95ae. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CAW822500002.