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 0x282a778dea41942689e28d21bd04f2a9b1d81d0bc742861384f1c84c661eb489. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5bed9ce4-63a7-480a-addc-42a92fc9461d.json and https://artists.proofprofile.net/proofs/artist/5bed9ce4-63a7-480a-addc-42a92fc9461d.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 0xe8ccd0aed55a227763beadebda9c93bef9ba5199fee8c39f482dce29e37f8456. 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/MXF551405088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa896691e6b95ee736cfee0b96bf427e26ffe6827706b67152786e5fc973f142. 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/MXF551405090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25fea7e0ebabadffd7a0b10c581b96958e6d436a223e9a3cec0e7c3bb551bbd. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/MXF551405092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32bb9a03470a571af9e6c9490d17d291059a631904e2d680ca890a94a49dc35. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/MXF551405095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8d10850675b03625c52d8a2d92efe549709af11b2ad7adff43394998cf547e. 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/MXF551405096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb940410df0f58369f460072cbb5aeb7c3e686cbfca8bf1ebdfd3f9188a9e7569. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/MXF551505176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a47de7d2e8389ba1c8f0fe91c0a8521ab16a4c9797a22f7e0169ed064f451d1. 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/MXF551505173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfaa3cf06f46d8e7d7c602cca2b79bd0b618100e156939b4bb9b9edf6b75e71. 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/MXF551505181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba146801b3294aa595d6864049f87e26a104719bb487d04c59299b3af6202bf6. 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/MXF551505177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08dc74cac65a38305d0f0cb65fcdc88f474c10d00f54dff8eb3e2f736118b5a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/MXF551505180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d32f87e3072ea706a0dae90f1b7a88aea94e231ca2c18613b96a3e595ebf124. 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/MXF551505170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f659b94570a7fb206474f808ff330f05be01efe69825899e9f57b81f30a12e. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/MXF551505178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40be1b12e485480e7a3de43d0bbbfc359ea0174e062beaf86af88b64f94399c. 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/MXF551505182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0913023060aa69883830dd881de95b287f3b0bda23ac163835d8605831e852f8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXF551304972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba48e27136d980c745f0e3f0e31d7232a3d5442bb0e59f7d3567ea6d7109956. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:28:50Z), 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/MXF551304967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb566d00dd82f15be0dfe69df48c91119a9821dce5337e51c5a25c590250b8fe7. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:23:53Z), 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/MXF551304971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff346402bbefcbc1372fcb1d036a0512855f83eeab89e59c57953f0bf3fb9664. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/MXF551304970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9b04d7f535bd085136bfe214a6c9838fe76b8a1c1420dd9860c2b1f812af83. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXF551304978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8874496ba055112d42d49a0c02898e6ac31f5e0bed7e34a223f8328ed798b8e6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:14Z), 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/MXF551304969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152069dd245a97c1a3e1b062bcabe5de8aea4f31c1c3585bb44aa0229f4edbbe. 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/MXF551304968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c77a697490559737f04d6e7bd480ff8a7f39427750c3aa5822c70d98c5c35c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/MXF551304976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0441960aa6b144a5ab2ce532a41918048e657a456ac401a03b90ece4397e95e4. 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/MXF551304977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11254d829cfee7cac43b8f02d05034ec255fa4ee39fbf3d143d6f3730f6d094. 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/MXF551304975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b58580158c5abad8eb85074d8f40aa2226cf0e214e63e3d5aa4cf5fcb602e5c. 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/MXF551304974.
Niü Mariachi Rock (The Future Sound Of Mariachi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a5ae5ad6c8149e356795c125a0851f4c2583bbbbdfa157a546fa5ed8dfb812. 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/MXF551204905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004cfff619b00b18db5a02c6b9e73df24bc4f2d38be5a4b99a76788e121b717. 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/MXF551204901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434c32ba72fb0a0bdb69f154882d684258381cb04ce0f3f7f5e4a55e279c3fe7. 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/MXF551204906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25f6540fa71ab4edc57fcf46242096b9c5f31e04291e63231a7c7994907dd28. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/MXF551204908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a0089e4c3a86ae27287ba02b417d388c6d992abfa0305be60aa35283d5ea84. 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/MXF551204904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd8c611acc46083bdfd3ed104f4e0e524c1ce2035b9fc274a0d23931e6ae00b. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/MXF551204914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437cb6978f9ac57a58a64ab02748df05526e893b5b7861e8166f90206524473e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MXF551204910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39fd905597c5166d9621d98e948c6e020102691ce884c75b4e7a09d19be4cd. 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/MXF551204909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a42c2ba835eaeb212c2dcbea388a7ecb7841477dbf10d0251cc2eb8e7b4f0ca. 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/MXF551204915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032127bc9401beda59e7484a5912136ee0e985cb57d22198a4377e8a861ddc97. 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/MXF551204916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5039700a1943242928eaa122fbcf08394628e91f2311bddab10cff4d5d822eda. 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/MXF551204913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf507533eb86726df1c441f5181c9a564401f63cb084de54ad7f605e6e81c8b. 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/MXF551204912.