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 0x4a56c0c32d51d1e462e717172db8936907d0fb82f30109e0f582a90728004c8a. 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/d910bbf2-44eb-4be3-97e9-ca087d0f86f7.json and https://artists.proofprofile.net/proofs/artist/d910bbf2-44eb-4be3-97e9-ca087d0f86f7.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 0x7d0bceeb5e745fb6ae5eff777726f44e979772890cd818ab06214cac16fe049e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZA56E2002561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d26e5e011beeb0bd8d06e44956a37bf6bda7e0f03fc702b81451457d0ee93f. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZWFG2454966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747f36fd26232d65bcdf7b2f354908b56b676d9cacbd1b304a9f445e8bd61496. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:24Z), 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/QZWFL2410275.
Kanje (feat. Shouldbeyuang and Dreamboi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17c55337d863d21b2b32f1a0b6879d5d64327eb4e5b54a6e9d7ad40848381b5. 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/ZA56E2101679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0a9894261f64b6a291835eac88ba23e0e28947392dfcbcf8a1cd08a4cba5e2. 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/QZNWU2006276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8923f5dfc050baa9c25da8162a1506c5441fec9d5be7134312f853aa56d5532a. 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/ZAC012400443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdb3a2e4da0fdfc2a6ed2db71af075e93d784a9a1bf4552a0502e9413612c83. 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/QZPLR2235836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39208cc1a7098967a7ff64cd843c526e2e7ebb5cbb79e9b787c5f74f1f757ec. 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/QZPLR2235839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe07a9ebee27aeddcc81b2018a2438135985a7289d5fc6e556fe240a7a5bab5. 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/QZPLR2235842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedc76c446f33c821a712999171560439e80919982b5910b55cb68f105adeec8. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZPLR2235844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe32b74b9fc34ab7d2b0e91782ad1d739d170dd50d372ecf6c6773f4c31c3999. 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/QZPLR2235845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb235d5c9d074129f06b681f258229c9f22d9115d75087fe596c4878948ad1a23. 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/QZFYW2114118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683a52c4d685cf1e0433f2e347922517f7e830f646f99d6739c4b7ea222c7e09. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFYW2116730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1cff4db04421c323ca8fca1f3920df840213e6c75fbb03d613c75d17ece255. 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/QZFYW2115538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa1407ef5669e63017bfda534a5332f4b85a7edd6806e5eeec5a21577e23a7e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:12:10Z), 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/QZFYW2113065.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f261e55882dc7134cbb2daa4f7a625001fb7759dc98275f009cbb498e30a47. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ZA56E2101688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95474dc6638e17a3a84b20e73668542e048d68a7968a2bf6c862c8a7c10fd841. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ZA56E2101336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba78a17005cfa9e57b1799a69589b10032db93a60a9f66e7b6efcda54d11a78. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZPLR2235848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69054b6e07e5a8c135faccdf478ce88ff216a15c1cbcb7d290cc58895eb1b18. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZFZ62180868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682fa1c26c6b2198924de0a74a4e256e59c165137f3f102d7e09cfc80d691633. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/QZFYW2169812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f4e3405d12167e353f68311fe664ee0d2364bc30f4b483dff8e5a9730d952e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZFYW2115537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d2c064721a611bc5341830b58f2f0bad1f4b56171ea5699d1e588cccf9ef91. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZFYW2114208.