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 0x782bea4d88efc6f47b455a7f655cb2d500905ccb63d155721a1a8d659e6ef522. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bdf0ace-6365-4236-b5e8-e6ab1d98759e.json and https://artists.proofprofile.net/proofs/artist/6bdf0ace-6365-4236-b5e8-e6ab1d98759e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pâquerette Down the Bunburrows (Original Game Soundtrack)
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 0xb44c231cdf01b5d1521e14ff280f80e568cd08cf15509ca169d77fd5280e9690. 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/TCAHH2393506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39e679894472ec8defc36e8abcfc9f26f3471989462b11e9385496792515f03. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/TCAHH2393392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab70ae9988473413a9531c96360cc129ce87e028ced58f803180d2ed3f856c1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAHH2393397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a2fd2a17f7bdda908fe47d0e1b02b0eede9caf031224fe5bfefb54f44563c8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TCAHH2393406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae12fa108037c74586e8a53b4a7d0c3099f22bac91ca1fad89e603d03c5de73. 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/TCAHH2393411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862c22abd87b3e58bb6550a8f25092361dc140ebf7f8f0b91527b80539077d1c. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/TCAHH2393416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e9a7c2e1d7345d01ae4aad7b9caade1180d32488cd5672906927838c1b4533. 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/TCAHH2393421.
Now You're Thinking with Bunnies (Chill Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f493a97b8929270c84cd89049aba27a7e16cd9d88937124a72034e5fd3882d9. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCAHH2393425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df5f83569a80958d3675ebaca3789259de3ee2cec536c4612c969ef6a350522. 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/TCAHH2393432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29b6aa46d8ba06d5251fe898d962a9fb33642fd5c995a5eb950b6c5a169df2d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TCAHH2393439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e66a69657b2d48e12e5fbcabcf3021974cca73876edb55f1abe0fb99f1a68b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/TCAHH2393443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e7f9fcd9a66b7f176bf63bdb12b10bed7a6c3f34160bca122ac93c7de2436a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/TCAHH2393448.
Searing Buns, Melting Brains (Chill Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0e5bdc04af30c90e48b3ca6ff8a6250f9c0e3bbd114a7175086f6c146d2193. 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/TCAHH2393451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f91e26566b91d9e2bd92a4f090113f3d2d034931ecab8d525b167493f14a515. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCAHH2393455.
Familiar Thoughts of Melting Deep Sea Holes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25982049b36a0b4e2f45df5f74109104e10f913fd42c4f890eb4d69e93efd1d3. 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/TCAHH2393462.