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 0x671a3b195019a5c0bdfb7ba10a7313064fc5032301b0b143c0f45bf15fa012bd. 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/5f1d54a0-78c0-40ab-befd-296bcd66da8e.json and https://artists.proofprofile.net/proofs/artist/5f1d54a0-78c0-40ab-befd-296bcd66da8e.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 0x9032f37105b6f94e18e49841088020231faa2059ace7c92e826ca5cac3940a7f. 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/PLUM70900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe298306584cb1653b42b082aa36c036b7b0febe07b3283a643219d45c4f37115. 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/PLUM70900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce44b9b30a2c5c796a1b3d2ca612066c0af0a7e88c503d280246fd3cf6fbbfb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/PLUM70900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f8d488474fbe759ec5b648490a3bedc540c759e4eee1d68f0cddb17bd5d042. 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/PLUM70900211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e359c4f885c036bf5a491f3da7a290665aae11b0bf40e3de9090681eeeec126. 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/PLUM70900212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab506787ad2e5f1a94696cefe188515f61f7f6c07afa7b732f6a86cd0f338ad. 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/PLUM70900213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdd4026b6af1c091cbdc3d8a19be6c72c0a2bb6be64131b006c1447ffb01d7b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/PLUM70900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687a27b70fbd434f8f9752190f52b6bb70fef86d5b824196310a08df1b8d02f9. 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/PLUM70900217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8ae697ddc16e7d48c08b443024eaf023cb73f475f7cfae57a9bb0afa395250. 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/PLUM70900219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6464558876a489c9e73556002491e89ea891fc9000d8100af53a04ec95136c. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/PLUM70900695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18a5c1a458ed931f0cdc1ff6b510f2d1986bcc5ae54b567a10d6779831a814a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLUM70900696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e172b5caa1cfffff896ad2c339d89e916b5c7a014172716fbaafb5a3e3400b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLUM70900698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027b905af590a06eebd7d0d80e4e106e47fdba522d805d244f805ea581962c56. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:19Z), 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/PLUM70900699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c509a7a8642eca726dacdb43ec42ee0f641d1e9ee80805a605fbfea9213a389. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLUM70900704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe030b6e8dea3b77cda5b8c2d688207ddd776c1734ddb2bf6237fb27a566be543. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:13:17Z), 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/PLUM71100312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2781b02b99e4d5efc9480c2fd9ffd7065ddfe430658aa6dc0cde3b72bcda1c2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLUM71100317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e136a9bde1a8fc33cbfdf81a03f8231efa177cb428279c0d2c0b210d99a5767. 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/PLG251300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ae75b8425376fdde56e09b34da1ce7e658e537425c1a378d98708df27191af. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/PLG251300058.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a86cf8da24c4b8181952b86f0557d0a295a086551bfb1bc73e12289e9177c4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/PLUM71700885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314024f6601c945dd5a11d00d7d0a9590db5562b5e8e8721e72e836aeb9d20f8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLX241700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e6d7a0b47b0d69e4ba1b71b3d636632359249356f06655621e85324954ada9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/PLUM70600136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8ae697ddc16e7d48c08b443024eaf023cb73f475f7cfae57a9bb0afa395250. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PLUM70900219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4aada0e3aa530af66c29836ee69cc3dbf035a89c32d193ff50731b28904483. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PLUM70900628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4d14e34b4466a01f660729a2ee5571f61ee00faca592695ee98f312baace1d. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/PLUM70900700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929df76026d29e85730454d2797a49d9739dba21977b602cf6c5c4d0f4b773e9. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/PLUM70900570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b33708100b96f7183e5a204b24e3a7fde4ead0c528891375720905bcd287c0. 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/PLUM71100319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171b78c967f63737a820c8b63b9e2d0da4b1a0edbc718b6b8310f456fcbf8c72. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/PLUM71700886.