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 0xcb1a5d14f44c36a8675c06d0a0980e17ad49ee750d3513a1f87589f4f74e5445. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/498cc107-2080-4415-8145-f175037505d2.json and https://artists.proofprofile.net/proofs/artist/498cc107-2080-4415-8145-f175037505d2.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 0x5d5e73bd4e66685e7a89731879a30751862d9790902491fdf93063e440353b7c. 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/DEH842100376.
Closer to the Sky (Scot & Millfield Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5888bd387cee1738c6c5a75b16674f34d078eedc6cf3f6bd8621cf40eb03bc7. 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/DEH842100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fc75f1b8bee9fd5ca50ed6dd0d660a692f3114e3f5d9e5a924a131fcb5eb67. 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/DEH842300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752136194d4a328225d6b07556b313556c78a7ddb42073552c1c4e16d3d449b6. 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/DEH842100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036a17294bd0fe7fccca6a29c7f052a87eb05327fe9d9e726a9f008a917c512d. 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/DEH842100384.
Echoes (Seven24 & Rediit Acoustic Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f89e9dcc5b0058772c020a962962408d42c78dc46f8e2c71d2c9afe0e2cc95e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEH842300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975816e34311a723604e9ca9173d729ee6e9db5a5467bbe1fea5933488dae55e. 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/DEH842300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44de89d27dfe2a478ef564da811f8d523c473b043a7cdd1913fe774d4075828. 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/DEH842100372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e73bd4e66685e7a89731879a30751862d9790902491fdf93063e440353b7c. 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/DEH842100376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5cf4f1b54e2fa9935b3e922d3ebb22da9da7e4047d9084cb95e1177482e662. 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/DEH842100378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855e52c23271427472c0e6554eca14205a151991f294c8d52385bb52b2d709c4. 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/DEH842300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5888bd387cee1738c6c5a75b16674f34d078eedc6cf3f6bd8621cf40eb03bc7. 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/DEH842100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f1311486a7ec328446a77f15e35f394c516bab1a6a63b63808cc292b07da29. 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/DEH842100382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aac0c04a0985dcb7c0f967ac21d4e875044734fc1da4341f9787277cdcee4f. 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/DEH842300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036a17294bd0fe7fccca6a29c7f052a87eb05327fe9d9e726a9f008a917c512d. 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/DEH842100384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6994d09572482f65e80800625f428eb91c8b28931be72633ab8b0e54f7f00a5. 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/DEH842300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752136194d4a328225d6b07556b313556c78a7ddb42073552c1c4e16d3d449b6. 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/DEH842100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fc75f1b8bee9fd5ca50ed6dd0d660a692f3114e3f5d9e5a924a131fcb5eb67. 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/DEH842300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855e52c23271427472c0e6554eca14205a151991f294c8d52385bb52b2d709c4. 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/DEH842300002.
Echoes (Seven24 & Rediit Dark Side Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a0cee65c5c856b7abf9980c5ac2eddc3e3731c88b07288c021fcc3043e1db7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEH842300317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aac0c04a0985dcb7c0f967ac21d4e875044734fc1da4341f9787277cdcee4f. 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/DEH842300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d537c512c1b705b748476ce2e395fbc749d9c9f45c714a665eb4a2def2ee46. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEH842300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975816e34311a723604e9ca9173d729ee6e9db5a5467bbe1fea5933488dae55e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEH842300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5572b5a83add4296345000d9f7f63e57386f839ef5144bd63cea198723c4e31. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DEH842300320.
Best of: Living the Dream (Tarja's Non-Rock Specials)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e73bd4e66685e7a89731879a30751862d9790902491fdf93063e440353b7c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEH842100376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5cf4f1b54e2fa9935b3e922d3ebb22da9da7e4047d9084cb95e1177482e662. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEH842100378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6994d09572482f65e80800625f428eb91c8b28931be72633ab8b0e54f7f00a5. 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/DEH842300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd42b6f3c80050aba0d9df3717964f9357b58a16508f4205e3fd8caf53b2ffeb. 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/DEH842300319.