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 0x4f140b1f7c4d30d6f5884e9a3eb2e3a49973239cc65815c38d095dff04ff3811. 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/76e44c0b-cb1a-4251-81da-b0898d536739.json and https://artists.proofprofile.net/proofs/artist/76e44c0b-cb1a-4251-81da-b0898d536739.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 0xa8afbec939209a2b7be048e10ee5eba9da79e54393ce27f2866d0f3e3971b230. 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/TR0331501604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbb1c70d9977b9f2ec3071b252df2421c02fe3c96779d53d2ed08f12baccd6b. 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/TR0331501609.
Reflection (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2248f25751988932f8ede9447e392a2187dffe518ee949187cba1fa6711ef73c. 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/TR8471300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c574af958d1da031a2717bb20515bf798e27db1f481d1b8b32a0fb53e5e3f2. 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/TR1232400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d01972167b19751548ae5b8792344a0055ed60bf5b094d80bf08cffefcf7db7. 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/TR8471300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e663ac4306d0081b07c420cd084fca7d18992837b74c7ed015f00f851ed2333. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TR1232400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb1996ab86cb15696528c3cc12ecd5eb8d0ac4ca911569f767e42cfc1ab3b29. 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/TR1231701301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080af01d092e45d89cdb867783e4c56ffb08fd0d3a0ef5db438336c2bec9400f. 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/TR8471700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f2d1db3688763c750cb4748cecdc2f09bb03b7e7350a716edcad1a52a98628. 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/TR1231701302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf8b5b14c0145e9141ccf7d6838b82998dc9ef446b7892027c8320f1c4226c4. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:21:14Z), 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/TR1232400102.
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 0xc9f04fc2a453247be3a13cc3ba62d41afdb458c01235217d9caf8bac7f0f1d7c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:54:15Z), 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/TR1232400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc600521a0fee942065f5bf8625cc195de1cbd0c0685cd83eab1e5a9b5fab2b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TR8471300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecfb7fd06cdd8adcc2f9f2c2a19f51e8de2c6f4078cd36312346d3d3da0dbf1. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TR8471300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87b1493529b3d812e06f03fe9f1884d3e45fee8b87ac3cbafdcb3d31fe9a04b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TR1231701303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f864e01e50116e68e13668bb704da1fbcea6c85da23b330c88ceabb6a1c0c5. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/TR8471300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fdfe646abba00f1d880449090ff752456403a47b404ac8bf6e11323505fcac. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TRAEV2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40865f859d7bb3ba4ea7e01c2fcaec5a54bad57f05c4be1d815711477fc7da89. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TR8471600064.