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 0xedc2a89388b3017d1ab655aafa3122bb3f44419349fbcbeaf7fee21225caadfc. 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/4bcb465f-56d3-49f9-9d17-c2fd6ebb1392.json and https://artists.proofprofile.net/proofs/artist/4bcb465f-56d3-49f9-9d17-c2fd6ebb1392.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 0xbf0d661b1e686c870dc890143c4a23ffe0e4fe5f66369e89fe77b104c7923b05. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AEA142008912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b15d3983315d169d90f5fa84880b3481bd17b1a6b27fb92912ac478c99cf95. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AEA142200467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd810a081de1698181c6b275c8386d3a92a2fef5db5bd0c4bb2632b3c4003d993. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:42Z), 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/AEA142211246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5e88849e49d6da598ba04c558420aec4e5e9cd1fca1d0b777fcb4b5d58ff2. 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/AEA142301962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e435f5aa381c23d784f43c4f1e3701c4cad6e4148069ba4497a4e16a5de0a9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:13Z), 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/AEA142302684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61a25ce39da76ff5442b4003d261ebd87c453655291beca110cd63f67eaf1f3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:28:56Z), 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/AEA142400898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1ddabf5dbf6c43fb6801ce540d725c8102ef85d3095eab38291eb080dce777. 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/AEA142402246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa032ca16b81fa5b40d067f82e56ed0d405624044be357999f7d4b42c5902c8c7. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/AEA142402623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49563de4fcd992653416ec7d36541eb10472535148636e648f4f372a16cab2c. 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/AEA142404094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6c9530ba92d4599020c8e0cc8baafc6c8af243c29be988c6f6525956034ed3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:34Z), 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/AEA142500048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae334e4f6376e465e06df8ba62353b310ae1107bdc3acfe6aff8923b7614ac67. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AEA142501086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9c2df564525bcdc2ac7701a24f0fde76ad87655b6d584a7a006dcbaf5eb7b4. 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/AEA142502143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b9f5b4a42396814decc76beae62d5afb723c6a7239667adeacf9a557c3da9d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/AEA142504074.