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 0x93384e795ae78fd5a8fdcbad0aafaa1148b74d826f3a4dff3a58185b6db0ab36. 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/5e0fdbd5-c1ea-44cf-881b-bebeb5c5e535.json and https://artists.proofprofile.net/proofs/artist/5e0fdbd5-c1ea-44cf-881b-bebeb5c5e535.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 0xee2a3579bc74d9b79aa72822f4ae354b4a34ffc43963b6fffe90a8b4f3270110. 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/GB9TP1501017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94063aaf2eda46e1f1c538f879f338edf9ef858ddf80e68ee34bfd70a20ce004. 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/AUBEC2122325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7384feefe882fa883a628e57a1ff029a2e69c60e5a2069ecae1f2e5e404034. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AUBEC2127385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39802a35a9e39252419e25a792b93a5fbad748db2e3eb4fe00608e877c75a1e2. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/AUBEC2127382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368e03db8df28dd10dc93325067c853914ecb93ae5e2d55081e81ba095ef52fd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:01Z), 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/AUBEC2127372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc17d174e55ed7bdcc1080dcf320c9b50ec428492afdfa5f4d8c888c1608998. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/AUBEC2127377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1e8bd27438941556d5bccfa0b4dfd5eb28da22208f0be95156e652ac64a671. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AUBEC2175298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4369d3ca865317de81457ccd15576f91ef599ea008372306121f2d51c6f905. 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/AUBEC2301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816475fcbbf5168ed19cbdb94fa5a957f57c2dd670721c61b52185ca4a98ae64. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:44:04Z), 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/QM6N22567014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435aa5dd29c653bdc53bdef81ef961298d799cf9bb7b1bf425bc9e4c7f4bee24. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QM6N22566990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816475fcbbf5168ed19cbdb94fa5a957f57c2dd670721c61b52185ca4a98ae64. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QM6N22567014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8424761be4b38a33c8bc98d608d9b09d84f35fd7ee7b181ae74544246f4ea786. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM6N22568657.
When We Could Dance Together - Sampology Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c34ab2ea4e059e673e6c24e4e69845dc40e611654a4378f0e6c8fe08c47e5da. 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/NZRI12201366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbf19b585488ca6ca340d9211136a1b571c46a2e1e08a43603d643ca5c90f44. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/AUDCB1701164.
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