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 0x647b7f9bc382f80e864ec51486bbb4d7a520259ded07ceedd2d88fe844aff394. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81baf86d-2cef-4827-a156-1be05d9ef929.json and https://artists.proofprofile.net/proofs/artist/81baf86d-2cef-4827-a156-1be05d9ef929.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 0x1084ac0bcc6a213dab65f45278b73d3460815916a23d8893ee2cf39add2dd07a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/NLM971800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadfe33afa26806205de0bc89835d62a62ee4751a42fedf752e67c155a880c32. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/NLM971800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8686bc5d68922a9a8c2670e308f4c52b2b136d3ad2cb2173a2587676c8d7257. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/NLM971800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35c0a1b078e350baf925b86afe2c3a06be242987d86e0ec6168270d2aac05e7. 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/NLM971800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc0f0a6afe564b1f43a91667ac422c9985f0886372b36a02fae588962b04b59. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLM971800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ef577192e3123733f84cfe191049def9d8053adc26b00ecbdddcb9484b9b9e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLX1G1800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18f164617b6f591fca10aa11dcad3572c0828c588a58412bd13c2c39c5a0db7. 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/GBHLW2202088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1591a6efd70fe8e54b1c1a9614147aa2d6e6ae3f27829dce1b7a44262e2f1c5. 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/DGA082471320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4372986c9cf381e4c4574496730114bf00e80a1a84948311bf04a4d509e2c6b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DGA082471322.
Inner Reaches III 慾望的暗角三 - Zaliva-D Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71eb0cac123ac40341574aaca126fa9ce03c020544d2ecde7a4bc121cd8f59c7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM3862111005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd961d43d7b02e5f7cb956b23097b8d3d519bfaeb0874eb40d31e8ab9e95103a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBHLW1900871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9e57cfbccd3cbbe06a96cbc5af325595973f54200d904b8f7ccade4e70d292. 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/GBHLW2003954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b223f05ef1d94c4f7808b336b0f02ea42b4cd8220b7e83167b503801ffccced. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBHLW2103431.