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 0xc55b872bdcea6df699fe11675c5c5f7aeaa1768e91565597632e00f43256ae2d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c3d285a-5876-4846-aaac-f24991b35c20.json and https://artists.proofprofile.net/proofs/artist/6c3d285a-5876-4846-aaac-f24991b35c20.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 0xd700992ae3042f869a061bc532821691dff4a8f8b42b2f2e19c3eba504c75283. 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/QZTPX2381311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3e01421d6b1de0cdaa453fa833a9c7ac32a30f2e9da80c3558003b33e7ff6c. 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/QZW9K2324949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f15fb217a6ff0ca866149f6381cea893543ec9d2661a13895851da1558afd7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:20:39Z), 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/QZW9M2354651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e56d2ffc3cee56522ab9b9c78be210977b9fc1f5d7368bf166563b76b0d13a. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZ5AB2410000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6274e653edcf2cbfdd6dc2b0ab7161827160fb59b343c22c5ce5ca9a01f515. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZGLS2421433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69342e0d554c63e287e5c588636ded43f09f1ee4f5a1dfcf06c6f2cc5eaa54ec. 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/QZNJW2450208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916e0129219efb34361061a49ef56a84b2a69d956ab23ce9bdb6b1ec7ecb2e41. 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/QZNJY2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6a7e0a08b09eb826ad2b1cdcadcb33e0170f2b97ccf585c3d2fd5a5efc7198. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTVM2454450.
La Mayoría de las Nenas Lindas Se Mueren por los Nenes Malos - Rkt Chill
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8903dd5e19b139a243db83bc685a0e109a5db1ac4d7c517ad4d6dc7470e7a5eb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZW9K2454545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d265769bb245cd358c5cc519cbbd813f56d9c916a3427e8ddb121f87493045. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZW9L2422515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39349f426b17c344030aac2d7b3d555e8fdc570e82b93ecff817bf5e2a6a2f89. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZW9L2447340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33296ce16c75ad3da313449b3d0d0caa7f94689ad4ea4061d5bd75752f0e8af. 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/QZW9L2498385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f156e871a57fc1f3ebea2cc7ea35fa2f1f6c6563ee8cd45b1ccda4573c54371. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:16:19Z), 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/US7VG2539642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19270a161bd9a44ed20b88737a0e33f0e7bd87129aca9c35ab528ca08764b79. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:15:05Z), 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/QZK6G2551539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfce6bc6e900e13872edf14d74c194bdf08f617f6eb93b42aa77c09afe11cc2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTBA2574047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a013039a92bff53568c60acd69cad0d3c957041006b5a90094302f2ef66fd45. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZAKB2532402.