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 0xded08e92154a35d0ce55e4c22e1c13d3666853d018f2aeaf041bd66194bb8ebd. 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/4bc1f07e-9473-4514-a352-0798828262d8.json and https://artists.proofprofile.net/proofs/artist/4bc1f07e-9473-4514-a352-0798828262d8.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 0xb29d4b15d9947f6daa1bee6e5041a2b935ce09f95b2a1614e47321e00069e229. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKNQY1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbbc6f20ffe0cc21649168b09772d556e0755e113ae85c2231d5b80be6e7f77. 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/QM6P41951775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bd4dbc6b4873729a9f263b357302c8a8587bbf5abe688a5532bdf8b4728002. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6P41951777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86431d2a4b274043b663510d0dedde1d4776ba8b93a6b20a6e27a3b1003dcb3c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QM6P41951779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba30896f8379299a5b4c434446108c7e708a44b9d0a00bb809e4d45410f6d3cd. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM6P41951780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9acbf3da5a2ada3dbe5dbc71b01d5180fa9e2584b9a7856bc51e600fb16b5ae. 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/QM6P41951781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7350c2b33bb872374d286ff0cd16e346875b254503d4cdef240837e2b1a69f0f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:13:28Z), 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/QM7282046960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7762243b502d2dcca11f29e2b5b618b94ed8f410b7f95db2564f5a5836335a8. 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/QM4TW2240986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d274e810d8c82f5a14d4de120692a84012f15525d8252739c19605276009eb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM4TW2240985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7762243b502d2dcca11f29e2b5b618b94ed8f410b7f95db2564f5a5836335a8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM4TW2240986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24fda394de006a8c23ed69385277fa3bef55964e57f5f8c165eceb565cda682. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TW2240987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda55d0e24431d22358cb6798ae46d10f1ee1a161329cf3633f9df4edef34f74a. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QM4TW2240988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791a501ed4d4aa4d9afe64a929b84ee29bf875333cbdd2f6bf77b5224b15675e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QM4TW2240989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18086996b9f02a8efa7f56625364d5928540193be6c407bb004a862ae0df9e5f. 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/QM4TX2332619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fbe126c9361eda38803296b4944346361bb4f76ee5f4878460fcbc0aaaff4d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM4TX2332594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6746469891c91544383753cdff9e7e753c2151d74bbdb7256c9a45e883b189b. 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/QM4TX2445064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b66918e9d4e608a64237f7003482a607f208b2f7c67e56ef03b0b81aff34ca9. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QM4TX2445066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf2475c095c0cbf15da786aea4b00eec06483eacd23a25c107c540fb509a930. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:23:48Z), 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/QM4TX2445068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde02e87b56f79535d1ae71c847554cda70ec229e80bb8406081649cf23a94d57. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM4TX2445069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5363bb2c97f5db33e1cbd2179cded6d434685e68da527bafe6a0e4a4ffd5138d. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM4TX2445070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d90ebcd25aac7004756f777fe95595ba0ee9b34197617dd5bad638024633ca. 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/QM4TX2445072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7bb0210a3d91dd723624ba76dfdd93775ee82fd0a266ee856d6eb3c7a29332. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:02:33Z), 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/QM4TX2445073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3ca31d0dddf54962e5726c1bc5382a0367ba97807a158dd68a99ef3ec95b01. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:34:52Z), 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/QM4TX2445074.