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 0xd377e51cb8c73beaa85856b0af04318f5fc39a1eb60e8837e265b34e4ca84594. 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/ed03ff6f-d2d9-478e-8a85-209a98b7bcf7.json and https://artists.proofprofile.net/proofs/artist/ed03ff6f-d2d9-478e-8a85-209a98b7bcf7.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 0x8fcec30793c271f9489205afaf6fb7a1f5175f5db60b1343119d9e11616c1f05. 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/QZK6K2398846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61813becea1b879b2f368e27bdf7fe2b5eade22008f87dc9afcb8d09b609a6a0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZFYZ2339718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa6fc91b86d79a0c7f5bb9112b30c8c6b5e91500dadc1220633832f526b23e1. 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/GX8KD2243662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce586f095b734e506dd1a82a23948893fbf362b041fa55f35e547eafb3a8c69. 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/QZRP52220686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3f002c27ea4464c23f577eed54639ee181cb8c7e3c74abc2d2679a153ae221. 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/QZMEM2232044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736c42605ade8f86a91dc90971856b0b94b1cf8074c71d1ac45901bbcf34f9c7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZHN72153344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880532be1c139c46096870b287fbf6c2d062611b7a9ca99945450df00544160f. 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/QZK6Q2151451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aeea928247f51e26d5a43647612dcedf112061b90429c2e1f14468dd2265c5. 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/QZMEM2178643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dab15e776e21e800d7b1d328da3b20a5d84a86ba0c0a04c40fe2572a4d0103. 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/QZDA52272071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dab15e776e21e800d7b1d328da3b20a5d84a86ba0c0a04c40fe2572a4d0103. 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/QZDA52272071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86de380218b25430dab01192921958499995ca70172cdbf0c9c9235c8b75644. 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/QZFZ62181529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6469633236d7409a802213c682c1c1f7aef15c3e031308d03a53b71136e58b. 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/QZES52101852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc807f178373f32a76b862993e2679258ffc70d165505645b7742ced51a13acc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYZ2186114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6377d0d76731dba004384e1b3069ee5594d7f266485cc9f7e08d8367c56fe72. 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/QZDA52119072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aeea928247f51e26d5a43647612dcedf112061b90429c2e1f14468dd2265c5. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZMEM2178643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880532be1c139c46096870b287fbf6c2d062611b7a9ca99945450df00544160f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6Q2151451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736c42605ade8f86a91dc90971856b0b94b1cf8074c71d1ac45901bbcf34f9c7. 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/QZHN72153344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6469633236d7409a802213c682c1c1f7aef15c3e031308d03a53b71136e58b. 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/QZES52101852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6377d0d76731dba004384e1b3069ee5594d7f266485cc9f7e08d8367c56fe72. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA52119072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10d236b1fc42b2d37c373e5f005d6f53303f31d8b4e7c9b307d24b4713a2afb. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZNWQ2335049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a8b2b11b950d6a1dff30bf34d2790ea2e6b0cb27f94e659f2b3d0911d59a5a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DETO42581943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171f479cfdfda3362c28d4c77b901077b89993afc17ec89f11aa89f4c0b82fb4. 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/DETO42532293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86c95061b92c0e475c4d5887663c29e29f8aef0501848dc37b309239d0783ed. 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/DETO42581908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53eef38dc78d5545190e3e5788a28f3a1e6acd2a5078ed4898319697d98b4854. 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/DETO42544222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171f479cfdfda3362c28d4c77b901077b89993afc17ec89f11aa89f4c0b82fb4. 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/DETO42532293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed6edb5ca98aa5dfd8eacbfd8e45a6bd60addc41c0a62a2f8175e0e9eb5e2c9. 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/DETO42567257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18dac5374ea7994f240c531dc0a066295dc3410f96bc8599e62c1ff17817e46. 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/DETO42567259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6401dcd07bcc859c7933f0b99acb7b23f46a15f757736447edc1d1e523d396f9. 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/DETO42568961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03cd54c4dbf4729115ff6245e1223b3e06150365683b2ff4e5d0aae9650209e. 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/DETO42574092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d05f34da98887aa2faa93fd8892963561554ecac782ef5e3e144e91c40c220. 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/DETO42567343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf9d2716c179283ee5b843ec6487e684ab6e2058a10c20fdd1dea1730f19c46. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DETO42543236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e2b7d3d6a8e727950840edad530ab222b2d06b74d3826a94473cfb16265523. 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/DETO42526886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcead5ca7e17f132455ea9b7ee1596335170a5eeb78680588b672b23ee7386662. 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/QZPLS2531207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145a17e1036be8156bb0f7cd17ea5a2f5be90340b8a4e18827757be12c34aa3c. 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/QZNWY2510566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637a881c98b9f6f62699feee302407ca3460889b17c86f2f812e57243fdfbc2c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWR2587577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdefdb0d148c13190a86577a28ae3b3cd86d7115f466502c2ffd2d2a7629a62. 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/QZNWR2518030.