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 0xd1788f9c4b1437ae658d0047556a3f26b42a0374c799bfc4bb986e2891347b0a. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc547dfc-fc15-4e8c-9dea-181ed1ad08a1.json and https://artists.proofprofile.net/proofs/artist/fc547dfc-fc15-4e8c-9dea-181ed1ad08a1.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 0x127747a2e29f6aa4cc9aaf453f236d7e87f723181721e69a79b5b85d30b7682e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEAMA1000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b02da35ae71ac3f33e0f7b5210294234b89dadbb4e4eb7215a0a7eefb6e6f26. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SEAMA1000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b713efe8463159bda91cddac70e89da12112518ae3993906252b7e50b65511a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SEAMA1000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d030343e9879620852734f49610ac58f26d92352bb87a210f2e297866bb8820. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:39:41Z), 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/SEAMA1000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346365dc898b9280215d075f76757b514180a95d4fed9f3c4e524b0ec0ac31ef. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:37:00Z), 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/SEAMA1000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a5278ac019822f21ff014f950f7168459a6e865188c616c92640ede1713c67. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEAMA1000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8164f9606525c2b848234795bd827b45f963fc2f76d43fe94d48ad4a3771427c. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/SEPQA1200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e09a596c6818908dab7da291663c4d7fc8125658e18fd274ac8588b68f02f07. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:08:33Z), 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/SEPQA1200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41de3c7c07dc347560acb671bba232d504c3d1823ae68a362009e3c47fdb440e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:49:51Z), 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/SEPQA1200408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b14750b9d596a4ebe81766147d4c36a0c7f7c81c0c161e4144d705557cd9321. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:01:18Z), 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/SEPQA1200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1828bf10f61ad776b7446efc8ea5795fa00ca28a6871ddc94637398875167c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/SEPQA1200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c89a7cc3332245fb3e7c2bbbbd518b3af47e1de5a735f5e32e2b6a060395749. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/SEPQA1200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625ca8794fb50170c6ba19d4b5adb3f3efa63426b4d95c4d15a319b3009c37e5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SEPQA1200397.