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 0xad88baa33589be4eca97d580ea3e51e88f1326d7ee69765533ea5a9f44a8ef0c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de198564-9d36-46db-aa1a-49cf37a40c4c.json and https://artists.proofprofile.net/proofs/artist/de198564-9d36-46db-aa1a-49cf37a40c4c.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 0x3abb4150ea8b74230b5ad52ae638500ce5ea15c9e6d4b04291b07a9693d51d57. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:56:35Z), 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/USCHR1314170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f458bf91f39212b4be392e688beca11350250d6a17f435bfbd47d1d0c83fb6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFME1409725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741d1a1226a8df7225d8c8f3681ef7018cdbbcc7e92ad08affc12bcf156c42a6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QMFME1409726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202d46052b74af978250389ceafa39d811233d2c0ec8181ec1ba98483903bf1a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ES09S1400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e448b051109b665cde74b03aa0fc7c36005d6e000072969d16d55a9100b70e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:43:37Z), 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/ES09S1400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fc52b3cbdf7270813823fbd316f5e1dcae5314e0a06aefd8507da931dc66eb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ES09S1400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9325e8f9fe11d88917c5454cf8ee3389efa536559c2e70996a77047274d89866. 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/ES09S1400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e6065d2064b19ae274552d08e6fb9671b9c39a306bd690c3d8c19c7f619650. 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/ES09S1400311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c296c0b23495cd0d8885361ac3dffdaba80502b13a283f34d98a6677551678. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/ES09S1500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c0154aed52ebb98e2cb0f689cf04aa38b9a47083d53e94b9cc7e4e6247496c. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ES09S1500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52bf5ab710c6cb8850f9d6b5bc3f21fab112a5d6b54b9e80dd8c31f150a196d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ES09S1500277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c57fdd5b99947a67f0486b40642c8bb323e92f81018ce05b93902f430ba261. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:24:22Z), 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/ES09S1600780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb09ceda9f5402bdc851a5f6ae375c10431473bb569015703c1248237e6c059. 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/ES09S1600782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530e2a68432164f173d61f175a4436d70afb7d9cea1759ca6e550020490012e2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:38Z), 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/ES09S1600773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194aadfac1e5c164764563748e0f0dcfedfd9bd450545cd12ca972e046c3f557. 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/ES09S1700376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9cfeb87c209859c79f55547bc17a2b4bdf2b60bac90a69fe04a37612045c51. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/ES09S1800605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c0b5b4d36dc80a844ede920bcd8e83af10db8ea57eacde81d4d2c2707618e0. 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/ES09S1800609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0923fb9a1a98e0d7f03286186a4e96e58d059584af683582f8682fc64b48f27. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:55:17Z), 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/ES09S1800614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99698954844127b534b8436d95fb33ce0d5804067f43703948558efadb76fb2f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:06:08Z), 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/ES09S1800610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3de0fdddf3a8cfe8fa683a1a7e00d3225568ea70d284a4ac4ee75471b5cbe3. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:52:34Z), 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/ES09S1800606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8556d40478a4293c0f23513f2b286645813bdea28b76c15372c726b83ed96c7e. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/ES09S1800612.