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 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 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 0xc1ce9e15f796820c05564722c4c0bcc6018cc66143fd5283aaf213e4a2dc83dc. 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/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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c38569cd08557173fc4169d7e464c4baee8583ead9f3698552f51c1eebf164f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FIECL2400048.
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 0x721b4bd351173c7bd33e6819238e67a49bf119b0f0d3d15bc2c29e29b23af825. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FIECL2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa558f766c2c04431162eeb2486d724487ab2fecdaa29a5fa5ef9c1e3c40a02f0. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FIECL2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00de8f51728cc3be3f388eca856fcb7bb56206b143f6a7e39498eb492f862aeb. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FIECL2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60166f68e9225ab4c9c335b561ef5e5a92d82bad5718d4963d1ae849f6dfac65. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FIBAR1600237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037440c8fc34beadd6fd831d2664dcf505967996a2a517956ab0d24108a9617e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FIBAR1600239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc30714c43773997696fbd8f2eb3ce724e512617bfd84b8f838b1a12069ef45. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FIBAR1600242.
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 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.
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 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 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 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/FIBAR1100277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecacbdc5234a0aaea69f11ae6668d64751ad22357ed934f3cebc0bdda340bc7. 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/FIWMA2100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721b4bd351173c7bd33e6819238e67a49bf119b0f0d3d15bc2c29e29b23af825. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/FIECL2100033.
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 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/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 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/FIRMX1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa657f38517f29ce0161d7be11ef3728c53099395ea5ddf998e76f0da61fce2dc. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FIBAR1300469.
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 0xa316df611ca046c6c4f81193ca6c9136e213050db8440ebeb2abd163ac9fe72a. 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/FIRMX1400006.
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 0x04581d359b62cae782f509a21dee7846413a07883c8de14efd1a448b60c8e211. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FI5ST1400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa9686e1fd5c93da5bedb2ae90bda68984fe802254ca822481ac161af0963ac. 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/FI9ML1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0db51b13ca939ff9e27311384dbf145859dea7366ab3c2b941b06dd2560f2b. 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/FIRMX1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0474ec70decd2f44c0cf35908ec5e87b189a94bbf992c4c84c2f60edef96345. 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/FIBAR1100049.