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 0x683aa92c7a4f8c84a52a791702fa8afdac1e94ef6f2916316c52a471e0384173. 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/41833375-7631-438a-ab25-5b550347c98a.json and https://artists.proofprofile.net/proofs/artist/41833375-7631-438a-ab25-5b550347c98a.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 0xcb667e06bd7a000898aa5e70009692437162edd7b1f91acb07d7c2bb16f26c90. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDS19700444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d61b961c0a6fccdaf4eecb7fbab9603c5864ce3a7588778a002271dcced6b8. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:11Z), 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/USDS19700445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49a99fc13df0c2ad68d07380dfe7229644a5657e98c76c47d9f6c90630f3a61. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/USDS19700446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad65a841af306c9a284df33b0d455b0a124bedbcd16fe9040d553fa62dd8814f. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USDS19700447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c46c341f5beb54091679370a4979f4ddbba943b2b16a6750f1933507a0c277. 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/USDS19700448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde10bf89f94ebd196c13123eec451cd830b1415961c0c2a5965d95edef913351. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USDS19700450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b8c8de5a220bdac559c4c126ed4dd739df7264b495851fd4fab940a4608e83. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USDS19700451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c173d4a5bd124286f2e4e8aa005742bacfdc1b6876d64870005be605ae66a8f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:03Z), 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/USDS19700452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc50956a8a0e58fb86ad0648051971705efce36fd866ad1778adc0d8fa4e754f. 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/USDS19700453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18673987a87efc270496a5c71cd55e66c1aaa3482fa83c3a186f005c23ab76a3. 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/USDS19800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bb4b5b70ec3b0aaa2388793a43beec77d345ff067cdf21e9b43966037feea7. 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/USDS19800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59936183d07ce756744632b685a605964aff41e08ea1e7b275c41a8b011a6ea1. 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/USDS19800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde940e88dc980be5269671229eee09bdba5789ec7f5a2ad879478226abc8c19c. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USDS19800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c553bc853bc8e8a86f167e44a566b665d9b0dc991005f1cf20006d9b5bcb9b. 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/USDS19800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3099d0ca310aac3f3a70b99544f8ba7ec8f6f72d2d4c7e932a75b8670e7a724a. 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/USDS19800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe938905653ed13d7e995fea7334d3ff5e4e750c42c658034d23ce14f5a691f68. 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/USDS19800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafefd755c0677f99910693e3ed75daeedcd79060c88143e55c9a4327f4442add. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:53:47Z), 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/USDS19800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaa395925ff0e6d10598cd55cabaab1399aaa6672e535830d77e4c3deffbd54. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/MXD481807731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e49ffc469737d1e17e1a15d2b7e2e8d2e15b92e20d6fe1768c3d38bbfd54b9a. 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/MXD481807733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff1c20ba14d140357b84d8f0f4458f0b0607d5bf4efbcf979b9aa0dcff415f0. 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/MXD481807735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7389e1faf9a58943d537b682f7091dd9fa6063858be1fc790e03d7533952f7e7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/MXD481807736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c0faa09d7476491d8ab0411d70aa4a8fe27ef801838b1f0d281b6ce24154ff. 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/MXD481807741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf703a0ea810fe584adebf2f142704acbed4d519b6076d88205120c3b3ae8d62. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:27:31Z), 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/MXD481807742.