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 0x96e21c2e64e2e9cc9de76bedc0b20281c257f52a2ac5f3c69d2306bcceba022b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79e441b2-dff9-405d-b720-3b4bc53655f4.json and https://artists.proofprofile.net/proofs/artist/79e441b2-dff9-405d-b720-3b4bc53655f4.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 0xd71a9667ac6730ddd7a4636d6cb3cd85f90168965843e692c92620200d2d77ec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM70900209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5de68abff4bb6c786cabd1990524fb776a7eb6c35715182555ab6a91c0514c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM70903473.
MTV Presents Unplugged: Florence + The Machine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7130235348674eb381958ff2eb6b3eccdfba5dde8b173e46ed76053036bfb0d0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM71201405.
No Light, No Light - MTV Unplugged, 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddfb8de27b74c2ee5f20412e8c82be18f7d3ef7d0df4df4c9df30e40726dc6d. 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/GBUM71201410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b2eb58391b20b7e99031fd6140838e8a6fd47788d578ee8dd052525111eb8a. 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/GBUM71201408.
What The Water Gave Me - MTV Unplugged, 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83223a3cd72c010dcd5b4a0030425442bc24951d30614ffb018a29bd947684c4. 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/GBUM71201423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23f29639afdf6ee29683d04d21d9560d51be780b6c4db44ac396a5770521426. 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/GBUM71201406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f4fc7eb0966ab8c8b93b68635a857d36764eb50979e9d1b13becb7d8bd2b47. 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/GBUM71201411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881dd0310992f86d1b9bf2f81b5db4f2c35da541db30029699cc653884e54c15. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM70913862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90bcca22fb671eeea55b83c6c39d3cd3c4cabef66447a40fe69624688d1e1a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBUM71107576.
Florida!!! (feat. Florence + The Machine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227da56e8d32ac51bbc61e21c55d543d873c49acd9ffd1d1e9388d8c2c0bfa5c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12401035.
Reflections Laughing (feat. Travis Scott, Florence + The Machine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5fe4ccb9104ca5ba0dcd83681873457f232e0b186eeeb3fba84226ddd976c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12501135.
THE TORTURED POETS DEPARTMENT: THE ANTHOLOGY
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b0c956d50cce59836284ca58f6c0bf84ddf2388daef9cb7066f2a62d891c73. 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/USUG12401051.