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 0xcd42768f4d8663fe293007a9b1243b19fb3740fe518a30f222227b7e95b2324c. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06c1cc5a-e244-403c-b3d7-4ab7c4634972.json and https://artists.proofprofile.net/proofs/artist/06c1cc5a-e244-403c-b3d7-4ab7c4634972.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 0xc1ce9e15f796820c05564722c4c0bcc6018cc66143fd5283aaf213e4a2dc83dc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIECL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e58f353809f8a962950681aff8d80b6968ab3c6146feb3cd9fa3f39ab8c59a. 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/FIECL2400029.
Tytär Inkerinmaan III - Single Version Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e3f3856c8edf1713570b34e20cfb3ece38b55b3614ef5029a60131e85d83ee. 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/FIECL2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382c46f366b7b5df3e4942ba1e79f068094e1d1fbe937a7ffd80a0d511740b73. 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/FIBAR1100285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770390f3cff33c53af5cb904d1f40ae837f3661f43ddf02c9039fe9818b6001a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FIBAR1100279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc144902d4adfaccb881d1c317cad47640c9559849a29ccf0bd93541f4df17b3e. 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/FIBAR1100284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9b205ee112c5d7bb1a92e356c1138a5e498d8b5642d748880e0e9fa2248c88. 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/FIBAR1100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba6317bd9b75c20eda4873d527132532e1cde784b59df8abcefd6e10b3c9b13. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIBAR1100277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33f0805cb7f01f01bc9e3017a68069d539b212222606362709b4e8546083f98. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FIBAR1100213.
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 0x3f5dea4a98e68616373aa8f6b047785142f99a751aa130ea7df13d16893ca574. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FIBAR1100282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecacbdc5234a0aaea69f11ae6668d64751ad22357ed934f3cebc0bdda340bc7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FIWMA2100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600764e0b039aa1f6d96e4bb57c98fad047abc7716ccf91389be73c9daadf5df. 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/FIRMX1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb849328268061e9c8776e908149aa9d44e5110ad565cb4cde868b81ef39e9b4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FIUM71400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a057208ce8b320d373a89b7fd77e0f07afd38aee83df22235118f0a81aa926. 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/FIEXC1300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3911ba60963ab38e060c62dd7c3abfa73412b49dacce3d3ad820b725a9fd2f41. 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/FIRMX1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5161f4490d0c2a903da49bc726429e8a1db1c0c20bfd2e3967909eefdc3eae27. 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/FITTS1300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabd656d290082ee371cba4938c28472827a2e231ff789a2feba54c3c0f1b2b6. 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/FIRMX1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7af2b78e1c7e4851630a70877eb16e5d0ef3e12633de0aec6967d3ebcec7f8b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FIWMA1100744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095b3f67671e68bdac893e05552ed50b1828adc59874cb59bc4b23a2bd712605. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FIUM71400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa9686e1fd5c93da5bedb2ae90bda68984fe802254ca822481ac161af0963ac. 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/FI9ML1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0db51b13ca939ff9e27311384dbf145859dea7366ab3c2b941b06dd2560f2b. 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/FIRMX1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0474ec70decd2f44c0cf35908ec5e87b189a94bbf992c4c84c2f60edef96345. 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/FIBAR1100049.