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 0xfe229f8d975839be762628d1f2ad964a0bca0fd3b8b6e50fffa8e267abcc0e46. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd8825db-3174-467d-968c-8dcfc20589fe.json and https://artists.proofprofile.net/proofs/artist/cd8825db-3174-467d-968c-8dcfc20589fe.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 0xdcbe240b056a62f988efa957d5643299dd23bba44925c6345891224e2a5eddc0. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T23:00:20Z), 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/DEPI82022058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83236d11c1748575417cea2c648a0c4b1abc1ee02ba180ebf8dc215b32929aa7. 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/DEPI82022061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69da46c49d186abce68bee35663c6fe539c9882a9d42b6143f2dca298f6fae01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEPI82022062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427a06d330fc24ff78b739d78370781571b9514e44819540bb89ee853e69f7e5. 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/DEPI81600816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c711b6300c618e016d7646ff76a20e372b3601b7461f264d34df52736ebae. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:26:34Z), 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/DEPI81600819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d85cc002f4214dbebd2291b10ee2cf50f008ae2e8c10582d74ea5f62bf264b. 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/DEPI81600820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef3fa8466abd2955a2ce9378f162e00e26633d09bd7f4c78742d2c3f671f23e. 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/DEPI81600821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963eb42cd0a3561a584b34aae3572c5fd420585f9b6a91c8c68e91fe862ff372. 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/DEPI81503485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a752e3b1ad51c81dd7b312644aa326726c8bce3b78b49c6ccd5c5eac3fbf73. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEPI81503487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5d5663542b78e7767bc4ff98e8f5344cbde724f84db929f289ca7ec700c59a. 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/DEPI81503489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72da686303ef3df32ffa74a3ea35b9a833853b86591f5cfeb29fc95d543a816. 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/DEPI81503490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f83e8ffc6d60001a2485796ca660e37f2d8bdccf0a5bce04065b2fe976e9c25. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEPI81503491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4976a9bc9f8d0324c882ebe306d051f7850df2951f94aba8b39d0f9a25f9d15f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEPI81503108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0697be75751dea69779f15988863b28662e175f62e59aaf09af0ca45dc4a88e. 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/DEPI81503109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5032b9c8d6ff64a22cad55f7d7374c34131932c49dd5775dedd9d5456c666d8c. 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/DEPI81503110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69da46c49d186abce68bee35663c6fe539c9882a9d42b6143f2dca298f6fae01. 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/DEPI82022062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c131574c97ff6594fc1757fb04856534720b2a1b3db17c153e50d2508a61799. 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/DEPI81705700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1858232311a05455c0d5b7f3defbc8008dfa52f1edbd43dac206faf788c85a3. 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/DEPI81705701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88299d720009abe2e57c7996811cc62145d8864efe1bc187e1bb6bd84d01c3a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEPI81705702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72de7c42844251d698eafd6fb532bf9a692f4d869db29655133d01ad3df569fb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEPI81705703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1858232311a05455c0d5b7f3defbc8008dfa52f1edbd43dac206faf788c85a3. 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/DEPI81705701.