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 0xc1f8d1fe42480cefb76306a39fcefc8a2412163245005161fe1bc16c88ee7592. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4cb5113d-8bef-4945-855b-ab1035f5b05a.json and https://artists.proofprofile.net/proofs/artist/4cb5113d-8bef-4945-855b-ab1035f5b05a.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 0x5184f887848aecd70eaebcffe12e3ada78ace87845acccdf9b678c4f7a3230ee. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZDA71986319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e701b072c708c2eca671c1b9d0246ccdbe98fc32ab9d26f108741688ebd690e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZFYX1963461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1180d7ef9b68d9f2b2454eb68b194a533c34a15f4b33fc87320866aabda0d933. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFYX1963464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e27d0a3ca568e2b5ea98f32980464a3e104b5df206fad65580f4a73dabac5ba. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFYX1963472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e699fecd009a7699f30b4bcf199bb71d10d194586fedbf6560b67753f91154. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN71962071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2683fa48dc28b84efe40dd10ee29e4771ba34d4100a61a813ea7426b5c012a1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:39Z), 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/QZHN71962077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4aec88430ce284b9c29261439725c22e410ac91fc4063e951a3071d494a4fe. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZHN82011914.
Frontiers (Inspired by ‘The Outlaw Ocean’ a book by Ian Urbina)
A Much Better World (The Noam Chomsky Music Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915facaf7616f7161863f03e2849970248d3e69e2ea73cd7b6a3e8c0d81d840c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA42252190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00274b8f3109583c2876f0d8ceac69681b918178226b5e86876860f508966b9. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZMEP2278280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304ecc136fb597449f2e8ac5f228933bb8038fa6c043642d9c9c1a9e03865070. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX8KD2378240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e495cf4c5d7f24a9c5de820bef3367354d077f70aad9ff34b74f3b40b8b24d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/UKZGC2404087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0558f3285a4f94d1272e8130636cf352df4c1a5e22b081c29e02977dd7549496. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/UKZGC2405964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad35a59f6f6a99c3d1f531792ab9440c6a0d52b91323f21703869847db8767b6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZ792441817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f4873da322d1511fa0dffdedf5881ac690a13c2b714b35e6e5465ecef68f1f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN32521555.