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 0x0f4a2d9a5cb4f85fd6a6daad9bed3e4b202dd17fb1a74f368602cf9c55a7bfe5. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98673df4-c02c-4a2f-ac44-8b92639bb1c6.json and https://artists.proofprofile.net/proofs/artist/98673df4-c02c-4a2f-ac44-8b92639bb1c6.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 0x3ea3820bc40bd871e4ba49144150c2deee2fb62fc2cf5b202a4e6a83b9a144a8. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEZN82479075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ccea4bc7d56b79be044c85ad1f6c6de1f43dd3c175d6b24acbd9e32a50eff5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:25:31Z), 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/DEZN82479072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ea285605ca0743d22dc3c0076fb448fefb16faee0e917c5cee167839a20a80. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DEZN82479038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb3c618dffdf28f6ddfff0d47bfd168a7a2d569a78fe7c5a67386910124ec1b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZN82479039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9e71442250c46505da6a607a018b54da3090b0def8622614ef7e6223f9883e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEZN82479042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70b7f76c9f17de36487b0b24bd4761a47246c1e347d9854a33fc5ddf1898ba2. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:11:03Z), 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/DEZN82479041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f02d0d228e84d7c9e343f63aa935d48f3313b37ce3928de8bb969722d927aca. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:35:06Z), 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/DEZN82479065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfbc7a376238fa85d10f2504a1391ebce2a0ef12c05faeae19bc16f4d0b396a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:27:37Z), 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/DEZN82479073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe77f6a96d0ac6ac41f8c9b131400e6e3625645835fa367f997322c5db63923c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEZN82479043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727587af1d013b588f0e2156e39184e2afff98c6516788c34b867af26cb3f53f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEZN82479077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834746cebafbb72e529e0a00fff3a2dc94e2f6fcbdb210d2d45ede71c77b1dc4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:17Z), 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/DEZN82479076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247b0db828811c2464623af0ce47ca245ab7016d8ee85e2fb3e66f596824ad14. 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/DEZN82479074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f4bfc9fe57da60e1899f04b236cfb3c1f946d84e7d71ff25400e00efaf38f6. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:05:42Z), 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/DEZN82479080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931d31afce034969ce65cd1dc6ddd02ccf869c5663dacb6446610ea3947bf9c3. 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/DEZN82479040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953e3f0e90e5c6087be08cf2da990a1721ada015ff31f8cf7ee035339124039a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:34Z), 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/DEZN82479079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6c95738ac7a4a60cdaa934ca81be2d9a120dec1b12efc68ffcf1a599aa4bce. 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/DEZN82479078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb243cb88ffdb23bcef7508ef6a8a799c812fa25e7efbfe2f8b87c6a3810887d2. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:55Z), 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/DEZN82479044.