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 0xb43931236b99b1905c0f20e15033bed5a8c43a7d696a33c0c86ed4380a39f561. 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/70a945c8-d7b5-4c33-9dcd-43874ed74541.json and https://artists.proofprofile.net/proofs/artist/70a945c8-d7b5-4c33-9dcd-43874ed74541.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 0xdc58a5b0bb136b7eb9c3e8ad0f3e051a030b4eea8753b2d0569c596ba100c994. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DGA0P2314291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcca59ce603a76b95d79a6a24587d7a5f169bf0437726f3cf2166bbd66e9119. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0Q2346572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8564cf712f80b945fea1123da99bc919c966ed66a9d7cd2d4240c4b1a87da160. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/DGA0Q2346561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5011e66d893a46de4e1109c61474229404705b76ce9f2b88a9ed6f4beeadd472. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:24:57Z), 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/DGA0Q2346562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80655d884b09ce673b8b7fe68dc61a87fd3316bcb669ee95cc8c272275402e3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0Q2346563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d9c1772b977904c8daa86748dc6a8c60d8b1f0a5c3ef135f3aa5afbdd19f11. 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/DGA0Q2346567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4077332de912e7bcb6fbbbf0b255d8c6284e0134e41e3bc81153de139c343a40. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA0Q2346569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6536b56d0f9bd04d90f79204b8da1c0c41fdc730ae33b004928db27e1ef715d0. 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/DGA0Q2346570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0404b9e31dea8a7f66e0dcb073015d5998318ccb2990706e50cd381ad292ca. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DGA0Q2346571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a946d70f3780523b8196c5ef74d32bb039bf18a757f2a611623ba880e76cf88. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA052445171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90cd018335ede50e1c305b11f51e7ee65114315478c6118d054e7418fb06210. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:30:18Z), 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/DGA052445174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5366c2c2f92c04609f39fbcb1aa6f9052098670492bfd9412eaad9932df7c0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA052445175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9df251f442cfdcfaaf7902be1b12e4ea0e86203e05b135503377c6d9796999. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:50:45Z), 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/DGA052445177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77aef8e656a1190870ef7ad75f396455f78f3591c88fc237197380178b7ca23. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA082453345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1b5d98b1e62126718db8a614670fe55b13707e6bddb91db7f7374ce4f6aabf. 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/DGA082453349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74765be17587053093e5a0bbfa7ba8ccf687278d7d8e761a5e61e36cc5e769b6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA082453352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8baa86195d5e74c0b832c359ad75e07c8f6c12597ee3dc7999297fcb788a0a. 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/DGA082453346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab655058724773de6141e569c248dac71e5fb295012d0285ceb8281d93ecd00. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DGA082453358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe959fc82702edcb10b24e2e8327fa70b1e4e0b4ea7b36e64358a123a85326891. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR2X42593398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778b32145888743e901a35e46898da211000454d2fc3b5ef71f85a6e21f7fbb6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:04Z), 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/FR2X42593399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c3a432b94b0fab7771f31b210088aa3abeeac624e37003f1c781243aeb82fe. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FR2X42593400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661fb02e58d9a5e275bd3eeb466bcbf26041d27dfed8f66d76bd93df7051433d. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/FR96X2545141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b21d7324a7f0d577e7f1de82f3d893ec02bc74a9e7e669b50d1d6461bcbb1d9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR96X2545140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae2bf922346310c442278b5f014e5fc5bfe17d8028b54981bacae0d1faec324. 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/FR96X2545145.