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 0x2fea72dd16f8dc8ae962bedab0ba8a4703cad90fe97996ee44ff4fb09638b22a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6411ac3d-2c18-456e-827f-bc75c6025e9c.json and https://artists.proofprofile.net/proofs/artist/6411ac3d-2c18-456e-827f-bc75c6025e9c.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 0x1061091be8c344ed3dbba496826ad84fe6223c949eb8af3faec4da2d67009173. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT5M52523971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45136dddb9f69e0373e1c9b034730a54a01da11caaa61406b91931fe2873e3f1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M52528183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade9b8468b45edd1a37d60da439c45dfa1f5cef0c79371db646b8da4f20fa830. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M52523934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19140c6655e5cd8518d87a4e29b04fe435b67792ac41228faf1fed5801b03814. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT5M52526223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb054b510e897a3e53143c73c75fd0363bfa5280b23f2bb193b0f64ae06321969. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M52512193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6419936915009bfdce0b0f856bdebd7d21f549c316b08e2700ebb4c632e00493. 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/QT5M52551776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd8d09ac80486b4a94789c90814d679c3e64d7e9d9442a214de0fd216747753. 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/QT5M52523327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60cd1167d8b98bf8dc74ab52053491e36a60ae9fd03af711f238c5e2bbf2bf2. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M52544765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d7ea8cd5c423ad80cb64974c3a957db4e8dfb8cd180ba1dacea90f57a7ec52. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QT5M52527499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56094e04e27c8e317823725ef88130f5114fd1419fd33745378a482b70577de. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:57Z), 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/QT5M52587842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0c26b83edf59d635776033cf208e40b401afb700906e7ccd86ab80b572ee18. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT5M52519449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5689067da9ad7c164cb1e17c904128a92611ddd6fb22fb5876ca140dcebe946d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M52578279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bdb00c8d9a4bc928cf597086838b3467dc56b3ceed7945e06ae5ce4f5a78d7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QT5M52513461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc454c1de375877049bb1c4d61818972ab8bf9c5e9317693433b1356587bc573. 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/QT5M52500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d4971295087c7762b1fa70e3f5b107c542d96a575c8a756ec03d8f7b8f20c0. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M52571244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e804e94e5130d4f3d5a3bae1779f4bd1b1f449b18724e8a78428ad16b31c021. 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/QT5M52585280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca272f369c041350d270c778b35eba37ff60c6cc3976dfe386362731054e3348. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M52546436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bf1b38351947f4b2c6f4d981ca464db6bfc46804957a8472d897894ec5fe45. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT5M52573034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd533969bfa58ab0ea49cdf79d252c407c79e63ef8569abd4b7822286b38204. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT5M52532731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a34fba12f2868faf263a1ea982180f3a1f3c70101dbeaea2d270d5372e255a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:29Z), 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/QT5M52514809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122cb77dc34b1511526832930b595d44cef10354a5122310bec26e7466e4cae3. 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/QT5M52538088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b769cede8b94cc7a81775a29697581fea6849dff0fbaaa2c6418b1cf1fdddd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:48:15Z), 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/QT5M52533398.