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 0x4c69b38f17268c25dbee0259c5e58051ba9d9bd4c32be3e6b327fc97e23e801e. 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/d63c7bb9-7405-424f-8a5f-96a7b2c074b4.json and https://artists.proofprofile.net/proofs/artist/d63c7bb9-7405-424f-8a5f-96a7b2c074b4.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 0xc18bb95c68b24a84720e9eb30fa66919d845896dbc1630c2dd92a5cecf5bd3f3. 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/USDHM1502573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743b06d6ecc2fd805d46cec53a0bf3750779684d73d5a237bfd55dc7ddeed9f1. 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/USDHM1502574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb830e552110db24fa40eb6e4c9420b84c4e5cce3d192e63932258b8e815e6776. 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/USDHM1502575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc27bc4610140a0c31ea2ccf8e9eeca27b44466f2e2f395efc4757fd9eb01b2f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USDHM1502578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf56eefeac5e748d03b5783e0341c8572bf84180b84c5151d0999b55d8e83cb7. 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/USDHM1502579.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71146a947f64df4a1aca262ede22b3b7127a3ba7d837d4fa4a44ae20429e7ac0. 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/USDHM1518835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a21e9be8e2d1e597e2185c768facfc0527e48fbbe4706512c2d147b365c4ce. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USDHM1518836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827dee514282f91f8ae765b8bf3c9bc8cd0df38a75aa990189bee34dd9c87552. 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/USDHM1518837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ed573f2c9708f433f48310c6fd354c20ad8c482820820849c80a651ad8c4d4. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USDHM1518840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67cdc7d088e4b66d7d7d76a670d15b200ddce20daa101383d086835a3f090cb. 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/USDHM1518844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8cc0fdcbc7487c6ec8a7a21b4ed2e93d6e243b3ce9be668c527fdd7d149876. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USDHM1612438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceb5139773d6d4b0f13930354a7ce4031bd88abc0cb8768fdc4db034c1f7651. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDHM1612439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd171f4338d8bc57385dd82b5cb120b8c674407d07d8223755965c911fa1c12. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USDHM1612440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942743c1239cc23a3f526cbb78179ea1479ed5775cd114584d8a82ea78e97075. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:30Z), 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/USDHM1612442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02f80a622c91e860668be6288fac0b7cf3bcccb5d09e705f0e766dae2fea0b2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:09Z), 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/USDHM1612444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac371c7b2799779a4070e098903dabd61a82c99a6288f583649e4f592bfe92f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDHM1612446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08863f6a42e934d591815c4b50da43cc160cde0a376d44245ecc67bae3e93843. 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/USDHM1612448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbc5f03a93e624880672e3400e89f489974ba9c025c4b47f98f8a255134a6d5. 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/USDHM1612450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293d45b5e063d64124779f33a96253a42d677c22a19435be472826c237d29165. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USHM82010753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f03bf01d09f2a2b89dba9bf1a1525ed1e9acbd1e77390cb482b723232f09e7b. 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/USHM92092486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca84cc1f563773bfeccc1f4e898e8a9c56b396ca8a41ec7f8b78c81aed0b8a4. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:46:43Z), 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/QZNJV2055052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea773300e5b7e700e7cfc618e34f940858ffff7dc1cbdf75b6da2b4edc13e8. 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/QZTPX2234028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9be83ba2ed494d80b97be8391fc1607751d19053cc696d3ab20f38112de3997. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QZGLM2427019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24480f06e07f4b48545d6fa4a4dd7bf3f691b286ecb88b734e8add708d620e59. 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/QZHZ61916678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565f2f0138e315efcf46398ee5e205fd2597e04964c23770383813bec073e286. 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/QZGLM2438216.