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 0x879e4ccc9f6ca53213f86fbca8805cf98625971ed56ccd971fdeb603a3a5bd13. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98e224d9-61f6-49be-9ed6-1e01e451ae50.json and https://artists.proofprofile.net/proofs/artist/98e224d9-61f6-49be-9ed6-1e01e451ae50.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 0xbec231809f6354af7ffd5838cbba8a23793d44820f4d86f8e855196736949bb0. 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/GX3Q92444808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6939c0257a6306478c8092230ba030d25403ebf8ea930de9eedc17619664f8b8. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:34:38Z), 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/GX3Q92444809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab82fe282006615d5429c9a432321678f3687a8e181ee7a467bfe8ed0cadce1. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:50:39Z), 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/GX3Q92444810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb46c05f3073f17aa08f2895f7fadc1576aed18657007a6651c6d322a9e34ed. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GX3Q92444811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4599f84e7ddc5c4b884f538c78894bc9a727bebfe0c7faff20e9d990cbb6cd1d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:28:53Z), 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/GX3Q92444812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea6c79d40c8be1e9c763d34e0da52e4d261333e0e8e2ce5708380b3b532d855. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/GX3Q92444813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc536fd9bc873246a67d6f42cbdb4710afceced9b8182ab09c1e5ec8d2662c89. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GX3Q92444814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3a6b82b3b0b695387923b299bbaca63ca1e1d1444ec88df0aed94f97c58309. 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/GX3Q92444815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fff862afe47352c35ecad9b0910e12d7eddef3c268378ab670d5856aefa2cc7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:24:15Z), 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/UKXN22415802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0327e3e281329a9a2d473008b1c5464753b317bb31fecf21917f2fa5c8af47a5. 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/UKXN22415803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46192911a3bc262c852cebfb629adf545d80f65bc8b4b450151fcf81856053b2. 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/UKXN22415804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef089a6cd76062709f3fd6a3d319d0da0dccf3bce1dd80da6fb08bd0f1f9ed7. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/UKXN22415805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c89577ade3d284c752f562cbaddf6510ebae52d58e1a90c414834b26630259. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:35:30Z), 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/UKXN22415806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7430485c4691b599f8b6ac45f3bfbc7de883d3a291c57f9bbb34d53415025288. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:11:54Z), 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/UKXN22415807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f1b3a4fe5a4ac7b4fd6937c2e31be121f2964312bf1fb92a2fc1eaf607d3a4. 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/UKXN22415808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d34acf4f6b651e462810a0c1c2ed4706b5a9d3f5859188484771b0082023836. 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/UKXN22415809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ae1f4ec47c4ec6955bdecde9b124138c1508b2d4a0bd1f0ce956bab18ff311. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBMA22444396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc471d1bfbc5219f8ea5cc46efabd17835479d8458d83719aa5d83afc4c5c6674. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:37:35Z), 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/GBMA22444397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d1a956bee1eda0b1bbeeb1ae4b106c66b6453a11e52844d6c01d0d31b99a98. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:24:23Z), 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/GBMA22444398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c020d85c10cfbf283953933dff96cf6cd10493a92a342080f5fa8a9d2626dac. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBMA22444399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b35862d0183e4e8d257a114f1048ae3f8c772a3a5fce94d02ba9e9722c51729. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:37:00Z), 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/GBMA22444400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f70b0fa5e25c26fbd340d4028adc0d81faad636fbb622e81ac5109bbd95785. 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/GBMA22444401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3802739c17ed93a512aae1907dab9d0bba1ea0c4471053ac5faab0966a09db. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:08:03Z), 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/GBMA22444402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c491857bbb42256a64bca09bc44be1b35d68f7a0812035e4eb10c63bccfe292. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GX53U2337137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429750280f9e53e1f1042990cbbfa02effb53e172d780e1a8263eef48e6ddc77. 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/GX53U2337138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2f3a584e6e1ad5eb83cebe94e4875f194b05c784a20350e2e835e83ccee181. 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/GX53U2337139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5a86837cd41a5eb4841c20e8758fba3d5eb37833ed459843b8c1b580323b6c. 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/GX53U2337140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea647b8ef4c33ee64554a81a294c361f1eb9a98a722909184e2b8b193d6b6e6c. 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/GX53U2337141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7d2a448f52982746c5cff62668d262576621ba642fb2139c7cfd61829bcf41. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:17Z), 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/GX53U2337142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4075035f9162e7dffa9ef0d2a2dec38e39a53d0f290cc8f5b2c77714128c906. 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/GX53U2337143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdef49737aedc7d591bdc23f2c91c3c3e66bbdb8cd9daf66884946ca11c9d7a. 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/GX53U2337144.