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 0x4c38e32870e1f324a265d6e53bde237b9133bdfdf2ec955b70a0e7f9cdaf68e7. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6000f5b0-c727-4835-9422-5e03592a0a88.json and https://artists.proofprofile.net/proofs/artist/6000f5b0-c727-4835-9422-5e03592a0a88.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 0x947e3ff807dd88de8a98186ab338d875963044d283926016eba8f33921febc33. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKD012282567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88c5280663f1cc050187c533fa057a46269bff75eb65d2cf13ee6979a7b8b84. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKD012291062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61297a408e0a9e0df8d1e480ad81f56626c64cd48d0cb3fa3925244f29a45d23. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKD012291064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043438d4e2551e245f3daf4947ae6efcb2c712a23a55fc069b3f3424d6748463. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKD012291066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa374804fc06d19c6f50bcba65bc953d28b0e940c13fe45c5fadb94162c828ae1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKD012291068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905ca35c5dc5154af4964e86f5fe3f0079e27047c91896ae5faad18531b8baac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKD012293219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d618e6b9c7196911a7a21169c4618b4b7617d38e817b3219a96f0443a85ff1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKD012293220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af4a10a41514b56d4f1fd07670bb8c05a5057473da62c8c6422e66dce5a0dbe. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKD012293221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f33d8043e7c442de04895befbf68eef8f8050a07cf134ff5c20785b5ce3f70f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKD012293222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804864d6195881460b1283e561d54a5fa3f08987365291c149690d2826957c2e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKD012293223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034db308a57f491d5fd5a1c76097b9021d1310932cf7d5eec168b5dcfae20875. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKD012293224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aae57fc9e655e0b7920648e3390c8f0c0cb1fcec05a73e4eb80d1aff42fead5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKD012293225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af96b02088db1ee4478466fc0cd99fd9027ee7750b0c215792dfdd639b2a08. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKD012293226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d972cb6a9424287fa82fa83f93c49c7a36bccc989a6f055c1a74b8900c0eba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKD012293228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45e5fdf24ada83b918388eb01f0b7de03c36ca6768309c5c1f11cd989d82620. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKD012293229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2fcbe0a170147e7b0b22b6f169c4fecb84090bb2c87c20e2282e0a007db834. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKD012293230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f3d0229b48958871b295f011ecd035527da25362c83aa76b5a093dc1e50a4d. 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/HKD012293231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad021fe9e43747c383895f1a59ffaa2a7d6e09e3ff3a893c4c21ea1bec9602f. 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/HKD012293232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83172fc1e2defb559038dc51b3b441a6ba81437ba45fe05c8120f27fbcea4e8c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKD012293233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597ee75bba7048b4ca69e7121d3ccbe6c2231287658ad332bcc8f5bffb785a26. 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/HKD012293234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2017c2e2e86bd00b795f5c5b7afdbccb0f515e7b6e554aa8a84f2904a1999574. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKD012293235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcff5a69a6b9c083cdb3052992e24796d34baa172dbbdf71321b82fc85095a1a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKD012293239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115d1d64b986f798aff1c7aad716fec8fc66d76b1b10a5bc0bd26df1c322566d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKD012293240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138bbe73cc03e02d0503e73db9a4b6cbb0d567eeb13739500cc9154786df6df2. 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/HKD012293241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafe8a4b108a67a3aa25746b17a7d755b9c1ee60e5b944c97ecc96b4b7a1b2b7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKD012293242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac3be5fffbcfb65fcd110a0b8b2e3ac1c3dcb24126804ee20eab24e65f5bc0e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKD012293243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd142e0c9e60fdbca6f49eccf2a71fbf46f454b848d69766124da214270507903. 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/HKD012293245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8e9152aad1dd67453d22b0d5f29780f0d994e2a2a8ddcd51ad370730cd03e4. 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/HKD012293248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156f54d2ed186601bc48a78066c422d42204bfa4dfb16ec3bf2df0e0b47d97a8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HKD012293251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa3b36c19458818058652207626712cd8daeaa0aed4a36003c0b0a0427b6649. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKD012293252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2b574239b90510e9534fec44faf30632548ca1d99126ea3c09722b1909605a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKD012293255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bad82e7d3f7b50166f0fa73562e8c1225b27978c1fbfffb082f69b75a3c9bc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKD012293256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1e9c642030dca5e6a004652696b2adab65c5643629bba9fc62fad20d3cd062. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/HKD012293257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0ac3d1c3d3b9da484bb37588e34828f5751bb788e0bf6a65d73fe9bde77416. 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/HKD012282568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b19179963f6fe5a6e19768a81cdf75a122da27e3fde304ef789e3858e2c61. 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/HKD012291063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144d6066dbee1dfc9771ab5f57aabb41e2a0381e1cdf853bf7031733ba42425e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/HKD012291065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afde518779c4afd34564986622100263e94bf94b0649a14c68e748638c70658. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKD012291067.