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 0x0040b7dd971e75d8299b08ad9490100047447ad7e9736b5dfdf2326ff9c88cf0. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab1f6623-f9b6-493c-ac23-dbdf334e2578.json and https://artists.proofprofile.net/proofs/artist/ab1f6623-f9b6-493c-ac23-dbdf334e2578.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 0x7da98dd83eb00f182198be2b907d69f7ceefd3f085ada5aa011bab60b5b9bf60. 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/US83Z2331058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d63111d604069bba8dcd206ac0c0021af4c1f1724eb6a48facb569ca2c251d. 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/US83Z2331059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123bb40e9c57f45f8d27693188a9756e289e4c0c0e911bd792fd155a70ab2880. 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/US83Z2473363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5320857171442c86c3c72dcfe44a32c6a2659b2a3a5cca6ada99c5eeacb19d7. 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/US83Z2348579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8d62dae319dedaf4f861bb157b70fc90b882971c800c4fe223fb04c4c0f2ce. 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/US83Z2330101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150d59e2d7a5a731821963a3b4b7740560543700eb82b429e49b03137f0eb6c5. 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/US83Z2240499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afa91a12585d17a37cf8bdd62a89b678ede8ee06c545bbdc5cc08697bf4567c. 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/US83Z2240500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c16dbda712e1150ff99800f6e0abc91b06d913e9c7b98aaa38d0f5cb3076ad. 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/US83Z2240501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac40f5ef88552d03dad40e42343356e68a19fa25cd551a6c3d3ab9da0099ed0. 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/US83Z2230417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2369087c842bf4ce992c7ceb25baad4890947c2b94e9bef5ddf6e6b5bf47b429. 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/US83Z2230418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd652e763a278efcb3d20cd080772a4741dfba70c754ca9180391f3f0b581870. 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/US83Z2230419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29346d640377f4c9be867f27285f127d8b18223a2498f3b5721ed38bd946c77. 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/US83Z2230123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39783d90f38950c40ebd2081d23886692f2455fde2a177023c1c87fa40d6f74. 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/NLRD52032576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf487b79faa50b7b4b068c26514f392120b46acff3bf40cab4882f9f4a300832. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:37:29Z), 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/NLRD52054506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60b6ab35ef36986b2d1d84d73adf4701a6e4810720e908209dd9231ec8459fa. 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/US83Z2428039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc550c41275a89c0902463247d84a5391bfc35bd1cddde062cf143b8fa7b93641. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/US83Z2404024.
Dances With Wolves EP (incl. Kondo remix)