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 0x8c4f37c0b81acf3f4ba3e362cb84597855cd160af4ccb98005209b52ce66da0a. 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/42e1c101-4d39-4f75-9fa7-4fb2f4c1046e.json and https://artists.proofprofile.net/proofs/artist/42e1c101-4d39-4f75-9fa7-4fb2f4c1046e.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 0x894aaa3be2a22b33822ab347a5566e6026d091f17487ffec1c54112e199d2c76. 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/USDY41960689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68efd93e8fb4dcd3647a00d94e2c47e7bbccac871e3c8ddc7b863dd162c71e00. 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/GBKQU2031679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120e56352b43ffa18633278a108802e81ee235b371cff083d5cb7466ad01012a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:24:21Z), 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/USHL20718220.
Stress Relief (Vogue Down For Mama Stacey Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488cbd1c512843290fcaf6923ff0d7d628b3a6086ba1f5073f8e3a82fddd487c. 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/USHL20718536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2634266f4f1870b86b2f6f00d09bf87b85d0860e2c6917467a4786b18fbefd3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:08Z), 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/GX5MY2454870.
Visions - Glenn Underground's Nova Journey Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d569ebee54d121999dcd1ba456403bea261ed46d1ecb12c57c266d182ff678e. 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/GXF972486459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51aae04a486b35eaf1de2cd5dffa69885c973ce0fccd54302064d4aa188b0336. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GXF972441628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7c4b6b0d0932bdd7a42456408809a15b1fa48e4cb1857522383d7b9c8d1897. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBKQU2556388.
Love's Masquerade - DJ Spinna's Galactic Soul Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fe2dc466443819fa6600c4a4bd4b8baf36aece6c19c4ca5b9a2d57f979a8e2. 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/GBKQU2556391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe48c604eb6cc0937d61bc97b128932500cda7024e27b8c68e699889cdbf6e5. 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/GBDLP2501415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf332bd51cd9ae04739ea8fe7a82e0f6e7e8b3c36b5558a25eca6b803e6157562. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBQ491200708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12580bce4b008d57066400865f07c371de80c15fe95a31697488c5ef70786e36. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USHL20718477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e730f1b656324bfd603e72f2a80bf9a07e6b2f08406f3174ecad3efe2fba804. 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/DEY472471325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef09f8a0008f4799a42f797a825420935768a418b676c0959d6282683a105e67. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHL20718542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbc73234109c01c130f580a0486c14c45809e8e100a2f93094f4edea215ba6f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHL20718543.