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 0x1f34e6c180dee28d9bf6bfd4354ea10efb55b010668b3ab49046581c7c850e39. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ecf80ff-92d2-4ffa-a5c7-6d837ddf926f.json and https://artists.proofprofile.net/proofs/artist/3ecf80ff-92d2-4ffa-a5c7-6d837ddf926f.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 0x270f05d1d4c98b94ba8ff3c891bb01872a9a2d2af58fcfd10d3369467c556be9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AUOB10500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf820c7dbef44ec6ad1ab6627a034cfcf9a894d5fa3c71b7c8078b6ec76ae0412. 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/AUOB10500038.
Four Seasons (ft. Phrase & Daniel Merriweather)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3237e8904880df035ba01cc678b77961128f35467323f494ac538e8fc6610f3. 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/AUOB10500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18917e59e0acd437eebadbe46417481aa527a87734da8068b0718cea21b128b9. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/AUOB10500048.
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 0x53a64ac1cb88c61a6830d959ce29d88789f781f4f2b65a7b447c40e053c8f6aa. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/AUOB10500050.
Sail Away (Banoffee Pies Record Store Day 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52787015ea4bec98dc68efe05c45befe2fe6d437a44d9cbf311de5899a0618e. 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/USUYG1131466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7143b5fb846fe82ad7820d8622ccd84abc9f3f006aa5892bb695ae6f3cc0ee75. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUYG1131467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8d62c505e5985309c0a71c9543569b10f169784ab14daca18522f217c17671. 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/USUYG1131468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc943b137f0745c24a0ae733373fe247063689bc7cef7416d0d52813aaf18ead3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1131469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da499985e4f7d35b42d2e87dc0dd17bda17bb9310d4f590e073c7923ef0b4d5. 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/USUYG1131471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fec73b32233f5befb4d0cd25aaa4fded4787c9af70f230ccb70bb8f45915a2. 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/USUYG1131472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4d1864c8201c23b610de98d87fd43fe9650b3deebad42a3dd6ea606791659a. 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/USUYG1131475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e18070006a8d3add77fd2481f2333399c645c89c1278b7d542d8a83e52e30f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1131476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9da1db5a6ffa00445a6e8c9b132e3f0a9c496ae2cf1433d6cb9396eeb9f961. 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/US25X2202130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcaef9c4b5ae4d2ccd58de4899e2e40c2ba0ce65bd8aa1f6ce752a1d9e45e21a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US25X2202131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb161502503c3fc226e9abfbc2ff22796236eed3091735bcb8622b2fb65dddb4c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US25X2202132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4fc080763dd61c5938e5b470a0a1bf7e7b15450c216dfaab943a247be8bb9b. 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/US25X2202134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245a4ab2cfedd1702b6deb22a40c0200a25cdd6442b6390462637f019cc1ba34. 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/US25X2202135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06df56b5f6f2efeb0c7a64362d541aba6863ee76f6484e0d9e88e51dc8ec0ee2. 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/US25X2202137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa05e049f4392adc337d6ccdc2473b3348f700283d687948c679b120bb8b4e5e. 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/US25X2202139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3c829183afc81ba318cad0c5fb280a39b6ea0c56ebe9afd6068a23ef0d5f30. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US25X2202141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c82503146a8f2a6d0764efedbb33b4124e049620da6755d6d3487e8403d536. 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/FR10S1740313.
Pumpkin Party - Most Wanted Dance Tracks