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 0x7e8e665e4562101bd7ace12700acad57a58d5c6c2a5d646aeda1590912ad8ec2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c71454b3-572f-4ef5-9cda-9f04ff825fcc.json and https://artists.proofprofile.net/proofs/artist/c71454b3-572f-4ef5-9cda-9f04ff825fcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Simulation (feat. Swamp Dogg, Justin Vernon)
Woo Woo Woo (feat. Amanda Blank, Micah James)
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 0xfab9e096f4645e5a6650704b5f203643173124750d5a90653d18e17a12dd916d. 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/QMB622001002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d1f3b3628310d4b51cdb68e43e7f718f7d479c70cbe3603a4442881f6e3f17. 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/QMB622001003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74e19a052bdc1f6d6c6a67e58111230ff1e1f671c6e524dc34aa4777448c47c. 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/QMB622001004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0210834425a745c393a253516b8378a4adcb4a35b51f671ce4f1df9a7920ec. 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/QMB622001005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535997d2315b67e2f237618b9507fd88a11457838e91d09d9c51289247e5a56e. 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/QMB622001006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a2fb7378eb7bcd7b1e5135ac9d738f21ce274e88d915853852e4911caf5e8c. 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/QMB622001007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad2f56c5db4d24da3371dec41cbf0f36416d9d2d114799fd963ac868fd9d4ed. 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/QMB622001008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3ca9c24ccfc9239fc7fab5d01e69d0d758d6d0b9bf4024a7a828a89dd04710. 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/QMB622001009.
Simulation (feat. Swamp Dogg, Justin Vernon) [Noah Breakfast remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcd241601e1ee2124588e72e0d64a25b995aba49a9d729d2ffb3e9c6a067906. 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/QMB622102303.
Simulation (feat. Swamp Dogg, Justin Vernon) [Noah Breakfast instrumental remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92734952646d844f3f5884d6ab1f98fa080eaba6efd821f8b36e8e2a17c7a473. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QMB622102304.
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 0xeb8d2020943f72eadac1e98da7803684d1c844963f57bc672464a8eb325d1775. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMB622500412.
Let Us Rave (feat. Naeem & Velvet Negroni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e53f85d0b121ee610d94460f4ec1cf0b01414e4dd0606bdfb0b358606325b44. 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/GBCPZ2221335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44b188448c816795a80cfb1f21a4b376a8eaf4cab4e66fbceae49e12fc49a7b. 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/QMEFH2310004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d933dd32f47be7433bba396fa69df712cd48e8c5eb5be6ab9ee36b77246b94. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUVWE2301220.