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 0x3eb5f6d40d969e7c8e0bf63c297c1344192c4982cc54f7845afe080d36f6cf91. 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/56fb00b8-30f6-4caf-acc4-e3192c0b3f4a.json and https://artists.proofprofile.net/proofs/artist/56fb00b8-30f6-4caf-acc4-e3192c0b3f4a.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 0x6ffd98c603cfdb19908c7a1f1bcdeb9f28dca45d6461f2a0142b5ec4a4a0dc95. 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/DER751124207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061b5b32e0dadd4417140ddfeec8c0acda52c537d3942fb62619612fa5e658e3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DER751124220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd12c1de504e81ea60c66a5389c9b06ea4fe1f8a6bc8140fdc4c7f1d8483adb. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DER751124104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5c088bbb79bb8ed06122068a485594f8b26f02f83f2e1a0048ba77f8e2f41b. 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/DER751124108.
Peanuts (The animated specials) - Theme Song "Linus and Lucy"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463b98f027cdaad4a051faa135c98f83cb40146455ed4fcbf56bede8c6a346ce. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DER751124116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3aa17efe063b10e2915f631f373cc32cfa3cddd75597278d5b796f25a0d42b. 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/DER751124118.
Sponge Bob Squarepants - Mrs. Puff´s Boating School Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436e9f57ffe4efd37801aeb9eb4b0ef6036d03c3a94e4b77024c68c4a7daf597. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DER751124122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf40794442e278e19ff39a059a6889e27826c45df4439a9bcfe71dd6dcc7e9d. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DER751124127.
BANG! - Top TV Theme Tune Hits Vol. 2 Cartoon
Bang! - Top TV Theme Tune Hits, Vol. 2 Cartoon
Spongebob Squarepants Theme (From "Sponge Bob Squarepants")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39047f872ed18b4c0b13cb750c63b96e66ef8b17240235a8f2ce7b2155efd0c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DER752092022.