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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a90bdbe333152e4fe5a2085299e15d6f58282e926a33cd87b5132931da1d664. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcf71921-367d-4d6d-919d-ef8e6119bab9.json and https://artists.proofprofile.net/proofs/artist/bcf71921-367d-4d6d-919d-ef8e6119bab9.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade63ab9a2876beb1eab6f6779b8d20d658e4596ac7bd2e9523cb7d143291095. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US6G41200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c9f04fff049b53afa21aeff0487b5142bb1c07098a44fa4b0fa8473a2f4a05. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US6G41200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b3df1e513e1e675d80129223e560c24c2cd85bdbd4abf5d334210cb97e33c3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US6G41200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31cb4d0ebbe4149ce3b63c5624a0456953f1df44d867457c897c5fd4753b4c3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US6G41200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c1eac18ee60bce0c94175f5ee441bf9b87f648ecc29ceabbc3d19167dbc56b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US6G41200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54194114505805c197cf725f96bbbdb427a493a02bcad5b83dcde4a079117fd4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US6G41200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe034c09f7349f009650b9ca5217b111ac49da93ed91754c03f146a1eb18258ad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US6G41200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae9aa0e0a0132662dac26eb274a143fcf045e8e524cc578eb6d236c0b85166f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US6G41200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62497f9ecf9c34060eda9fe0dbe3b6853ceef4faef9daae8e380fa59efc69d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US6G41200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3658ffb17ef3d59da596e5df94121299aa912446549ea2d97ea331e997f703. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US6G41200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb92c6b19bc457a78ca5127e90a46b76de05001e55fce06ebcb78390aed9891a. 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/US6G41000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e619ba5bbcc1ff7e8483c1c620ce6bc229b95910423a16af8699b3489aa5033. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US6G41000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67460859fa88adc78778937e23b5db2ca474fc0e3799d84131bafd249bce4d46. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US6G41000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf030fc45b95793a985ab48b4fba457bd764478c3661f5cd65f38fae0d0e74924. 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/US6G41000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecfce6e360b52ce9ddff0d8a50d5a91076433bd0902c8c733cfcb2e692eeeeb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US6G41000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356db3aea024baa930b2e0632378328452de5c1f5ad4f9eba04038ef260187be. 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/US6G41000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3f6cdd5b18acd120d8225c9442d96e8b3d3bf46673d06c07becc7731fa59ef. 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/US6G41000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7512aa874bc371bf52a44596b50e1183f775fc2fc1778ff675afd98fd3d685cb. 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/US6G41000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a2128da345f0dfa7e1eab564ad83ae83a2a6235514a7c4ff46c826c25d8a93. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/US6G41000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9134c5ee113ad7b51df90194df9ae220b1a339ac541de8deb5a7aac0505a636b. 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/US6G41000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439e9aea8b10efa6c5614688cb003b89a2ae5db6e804bf52e52585633274db82. 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/US6G41000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe470eb0bb57190581773ff77095efaa9dab906d7c045a788a9f283e5103ffdf7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USKO10800674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35a9bfd9b6230243f3a47f333863e71660724cc47d03f55d83ca8286f03d3d9. 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/USKO10800675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe42c2dd06cd573896cc030f875e6569127f81e0aa0b6662828eff738022a8b1. 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/USKO10800676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4ea9e6a8c5f58648157d00fb73121d6b9216f7ef89f1cb2478f4866df04f25. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USKO10800677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb4cb5b4017d7beb4c60c8ade24ce2687894bfbfad74f2c0400597793a9270a. 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/USKO10800678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4f722a54ac26e6d43c4fa50da88ff46baeaf467e7145d46157abdc6e6596fa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USKO10800679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cb394f70bc5a5511dc159549ebb10f711e4e52748ac01a22c469946eca9489. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USKO10800680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b41241096dde101b40840688aef573f67b6e48c413a0dd24fe7469c4c3a88d. 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/USKO10800681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e28a9df0791d131d7f176c528de412c43b777b16539f5b295cc023f1fd9850. 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/USKO10800682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36062ac7d01cfbe1852565abf91faa5f956cea0f2eb97f8cf8534f6accf2c16. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USKO10800683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3129bc031aac657deee8413666845c13c8075d0ca5699b7597ef0f5298e4d07f. 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/US6G41300000.
Alive In The Fire (WorldEngine Remix) - Single