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 0x0330a7178ad5ba580bfbf84de9ec8b1436e71d3af288c30a10673a66cf39cb39. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a594bcf1-c192-4bf3-8adf-08213fba94d5.json and https://artists.proofprofile.net/proofs/artist/a594bcf1-c192-4bf3-8adf-08213fba94d5.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 0x7243e0d6157ca5dbacc0775464fe96e00be7a6d965f76fc5130816db10f679eb. 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/USSK32343282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4046360d4322992de18a8dfc36a7a8d64cdf0d06e79ef35002b0f005842ef5. 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/USSK32343268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c5abc9f4c87f01628a4082769082e1ca56c1c38adc375e457ebf966ba0b9d. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USSK32343269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4881021ffc964b8071cc6699b0f6c4053c80c7bc5ef715ae2194a5afb863a95f. 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/USSK32343248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e53afbf00d785ae292fbc803468e8b0e1763bf457c44af4383838a1355c9a. 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/USSK32343270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a823f097216e7c59c0f6f1ff189746cd4263fdc643a4eb1acba18c4988365a2. 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/USSK32343271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2800a0d67700da6db80a9cfc768eb2373ecad6bb6a2346cd53a23a8905b783. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USSK32343272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb003185e72d44468a55c25ea3a079325aa7bf9108dd0680891876fb508b4fdb2. 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/USSK32343273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f623c0a2d8ee244a4322fbb43295f655906b61604d1a87dcc05a829a1953f8. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/USSK32343274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafc2b9431c1d7bdf54ed60c53a9c0d2b9737a9c6624bbd8affa492d6c9e2867. 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/USSK32343275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0a82cce126bbaf25dd6b028cd914a0e631660b57f0730430b37f12e3cd5191. 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/USSK32343277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd594d5329a53d5226308ec2eaa643653e1aadbc63ece60064d3098371a6a8ef6. 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/USSK32343279.
Harmony (Single Edit) - Original Cast Recording
Harmony (Single Edit) [Original Cast Recording]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16903e98c7dc90f0e3dd7665e0991d64a5ac83e2c96ba241214afef25b536bf. 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/USSK32343239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4881021ffc964b8071cc6699b0f6c4053c80c7bc5ef715ae2194a5afb863a95f. 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/USSK32343248.