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 0xa9990270b47ec4ff94eff6c22da663e6e0df3573672ad5777b4e4935e345e399. 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/c9d2a97a-6b93-4e44-830d-375b37a81d22.json and https://artists.proofprofile.net/proofs/artist/c9d2a97a-6b93-4e44-830d-375b37a81d22.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 0x0e24af128afbbcafbd188f58ed5992b38f4babd41d91e67306c42e1d8c4ac616. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNMX2296152.
Comfortable In Chaos (Chopped & Screwed And Sped Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a396b311deca3068d8ad61afaccb2aa8cb4d34759d9391ae9963df5c30af7c. 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/QZPEW2453197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbdd7544b3f8538e09380b85844b4bd0d461e8cdb8268c5a2df7e02620642dd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZPEW2453206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1fa1671167ed4576fa208fad22b43970b804427e7c523edf53af21171df5fb. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:05:44Z), 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/TLVEM2456857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dd74ad31c2a90265f9a6d4b1553371325c708de40e7ace9cbb7db1a56a70fa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT2VB2408548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d4c4551e7f39c31e7012aceb4a390c8ee5d09861c03aaaf6796c0cd6d1710a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZPEW2558737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6813eb4e718262fd0d5dbbf85a5472229c9a398055f7727215a599130fe77cb4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZPEW2562336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1363c4ee95a6a91f8792e4cdcca26ff777666749abf5911076141a3d4395b665. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZPEW2597341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136bc9aabc432e7dd88a98912ebc64e1203f79362e756363810d0d711c51ba12. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZPEW2578965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa159c10c3ae3a1b0e5f6c38c289cd22b6e339fe1c5a67d89454382a4a6df96f7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZVEM2567146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2fc79479458867286b35d526af0598a242fafe8ae30bf6d7cd238f60969f98. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZVEM2571957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdd0d80cc9480e51e4f7a5e386218238bfc8f040c894caa3672d0d1885dcecc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT4K52528004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cec09c7b9ba8671588b7cdf55695fdc335f450169f46f43a4c01489eefc1f1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:35:03Z), 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/QT4K52530876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b995453fe550aa92a9c3c4eafb0d9f88b55b939dacfcdc9a88fa8ae9e09256. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USUYG1754321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1ce767ffafe1f5a42ade9da64849fe8c5d5c822fb789088082f3318e1f4f4c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USUYG1753750.