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 0x73278b7bdd71d8765a70e17a616e1161a0aaf77705531a9abbc40a505607806c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/732d7f87-5217-4a0d-a199-9c3593508d41.json and https://artists.proofprofile.net/proofs/artist/732d7f87-5217-4a0d-a199-9c3593508d41.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 0xf7a88d697dfdc3b195524d01144221adc577469351361e4f71a470953bc1d96b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USL4Q2405675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d140dace9ef226c810b8fb800c7bbb58498fbff1bb3fe653f633302407a9e09. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:45:49Z), 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/USHM82465139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76635f717cb3dccd4fb9bceac6c9eb320594b9c653405da0bc48129a20d83e27. 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/USHM82477706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12dc9bbb7e95f87b57fb6ada1db2c5c9483d29d47651ce937703bd1b26258fe. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USHM82477707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892919cacb4610567c43f737178eb8eae96eb589ec0384889afff5d977d79bc0. 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/USHM82477708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe28ac59c941c096a065ef413f0f5c1be49858d89c36b19688ad344a3db8a31f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM82477709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f68fab3a0c950f9d1a09cc0df56f523d1cfdeefeaaa1d9da6741d2fcdce073. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USHM82477710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb55783a5e65c9a874cb2d221ea4918974731821799c3dc777aa9087bf80105. 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/USHM82477711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6df73058b0b6601e649df777ac1eacef75d7d7417032ffc257c392ae7d33fb. 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/USHM82486611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885a7f2776ec13197078827bafd14dfdca065e0b9e42698747a2e5c262ba8289. 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/USHM82465140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660e871ea8788ebcaa27cdf39d2c4d0bcc2cafebf231f39c04bae74395be5e79. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM82477719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3452fea7580785bdbb937dab8a6624419a72f237660610e199c6a43ed91d55ba. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM82477713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eb82e6308268c96414dce9faf6d940ab366dbe7623965919b38973c68bc0d3. 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/USHM82477714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00e7894fe6e4cb18c8290afc50c2220c7ff6b2ba0f76330020e385acb7951ff. 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/USHM82477715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b07fc3bd0cd6ce16f829e3547cf098b3dcf5ecd242a5b34a32d9b1604b6df41. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM82477716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876d72b7a6b12f126c0b8ccfdb917e14815f7c529aeb145f17c601a23803f987. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USHM82477717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8839dbc6d60e5c55c245e4abb6053dd9c4b036f860326d85f8d727a50334e8a0. 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/USHM82477718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1ebf4c2ee419a8a5bc60410b2a4578f9ed94a7c3979063e83471aee94fbe8e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QNSM12403854.