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 0x63d9e36a5878e322fda2df2ad7258f7ffd784adc10e450df93237747fb1a1139. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dececa7b-712e-4ef6-a925-cb78661bd787.json and https://artists.proofprofile.net/proofs/artist/dececa7b-712e-4ef6-a925-cb78661bd787.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 0xf135a099cccdf3394fb0b1e885dc101159e6cc3dcf731022f47a45b7671be85b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:16Z), 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/QZTPX2275483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9658ef99c68138e100fb2816b1557fe838828080152ff7dda59c5f5edf0d3baf. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZTPX2275484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d1ad880130d3388af8e0094178a8c60a23750e7b92cf24874a9b44aec4bc4. 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/QZNJV2387216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1daba85cfd60f0b11b1e4f0ccd7a44f53fb0cb3c6fa6fc6b678afdf2b83c22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJV2387217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7cb192f7cae2d90902a3491c3e09511e87e2c1f8e6d5c4ac6f69d6332a4031. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AEA0Q2310811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8159a21520e602610cd8f4a037ee6ba5550cf9ae1727e7aee9276751a839c01. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/AEA0Q2310812.
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 0x14518a49bdb0c7075396f26f920847bb4ca483345d1dfa984151c092f077078f. 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/QZMEM2470813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb8493f4dc375db5c29b0850cea0d6678ba28b74f1093c5c30e1cf4b45983e7. 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/QZWFG2477553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1741711eec4bae730ccf8e70d6b9bc37fbd1c1c94be8dda52f425a4afc3ac941. 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/QZWFG2477555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afcf0b5307caae27c9cadc60675c6ef12d3e573252768a19290d0983b1729e5. 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/QZTB72367505.
Terrible Dream - Mental Discipline Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ba4a73d4c23fc03e0e2d7875171a859b06704fa0e80c6ffcfffa6e3ff80e6b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFG2477556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bfc9693a69e7b1050ae8040a9a42dff53b6e35a6ec26e5bdee109ce0a5cdf6. 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/QZWFG2477558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c065bca6038c4c4dcab6e6fb32846b08f8565d0e4ee9baece957814eccc6ac3. 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/QZWFG2477559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028f736880b9fd1114305df80be9b1ee5fd59ce88931718b1c7ddff293a18a3a. 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/QZWFG2477560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbf4275300f0aeee1260b7d3a0d82a62ed2207071bfcab14a106a79843e12ec. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZWFG2477554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3922a535423eceff4f564aacac96cb635d9dac44048340f113b89b1ef589300. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZWFG2477557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2059b421f629ce98d2feaacb5527c3f1817a89181dddd0292c0ff3b1dab0442. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN62550798.