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 0x7208d0a938c05a1e20541421209d823d8de97101a242a56b99ee714dd52abfca. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/440d6480-52fd-4792-9285-2dde8d1ab58f.json and https://artists.proofprofile.net/proofs/artist/440d6480-52fd-4792-9285-2dde8d1ab58f.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 0x812dccac86f257b03d08bf56f90467997e99ac50f72c4c2afdc2139151094237. 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/FR6V82315933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b70171f8a562ff07f84468fb841c891ab72a92ba8fbae4a00d0d353180e65a1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR6V80405712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f45d8fa693ff310ff5cee8bfc3b34d32455c92c8e9e73529d04d200f97e4f9. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:06:48Z), 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/FR6V80405719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1042953d63f40081a9ba86441a7a30a4ff9e1ce48b7afcd98356bbaa100bc0a. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BEY450300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd639ce56f93c1546728ed33bcfa633e98fc6593d260fc9598925aaf4519d1ca3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V81068811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0a15f654db602de819dda052e16a4f0c2fd76958a76e85b4ff78a4e23b55a7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BEN281200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7087a06545866c8984321e17544c8cf0df534801db150c33a5f434388319743. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/BEN281300018.
PUPPYLOVE (original motion picture soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa3119c20bc5e2f2ffad573a6c5c77d1d249b013fc90443bab35ed2e8cfa263. 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/BEN281400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba21de04c4b25a2f4de8c58d6ce3103cc172ee81a94731d697dae84bb550ff2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BEN281600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da00e5cc0886031e6489d634d50bf8ae6b4de95e20ca5a1d00e22bb20e743b1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BEN281600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006508b885b7e8e8455a905db0b2939d7e6f12e91b77a8017798e394d16888a0. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BEN281700050.