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 0x05d325f0e800c08805c3f74869b3cf9b6c36ec78e5debbd40e387d95da293a11. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa9fb139-fcad-4550-b504-92df831d6063.json and https://artists.proofprofile.net/proofs/artist/fa9fb139-fcad-4550-b504-92df831d6063.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 0xd749ec8ccf558634602d55d362150bccf113f0e6b28de9ca24c6101f044fbbaf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM3EF2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273c6fb704933bb9641a7eed6e43c1b332a913b48b4fdfb83a800ed7ef125a3e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM3EF2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c71d374bb17223da8943a5fe567302d335c6552a46b78c52bf68918b8c705a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QM3EF2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a721e6c94b809aaad99501181fac7caf40e2a93c83fa5fd48e180decf21de11. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CBEYJ2413985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3b289a8f9dd3f031f9fe1e6f6f36c22071a82ec25b5a494ea13644eb519321. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QM3EF2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3b289a8f9dd3f031f9fe1e6f6f36c22071a82ec25b5a494ea13644eb519321. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QM3EF2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273c6fb704933bb9641a7eed6e43c1b332a913b48b4fdfb83a800ed7ef125a3e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM3EF2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffb38e9cfdc7a0f9273e821be407021b6d0c431c8a8872935064ed351dd247d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM3EF2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c2ee5f207829974fb5b8b1d17a7e7f9ea5421dbb90e1581bda34cf03f58f43. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM3EF2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd749ec8ccf558634602d55d362150bccf113f0e6b28de9ca24c6101f044fbbaf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM3EF2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2e2638fd74acc2217b40738c31dbca1851053483b36ca2080843beb2b71daf. 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/NL1ZN2001452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd44728afc79a1e4a5def93b89642f3aa2cfd19f5dbe90108ba22b44ff34770. 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/GBJX32005116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bad5511a0be833169ecba64ae6939c9ca0f9d8c7f42462aeabd98dda9a06e4. 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/GBKPL1977669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e497b0dd9fe4e0a6393f7dde6f425bc38a2ebbbaed53ca7526ae9dded7506c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL1977666.
Ain't No Mountain High Enough - Epic Trailer Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ecf21b774476f6fb66c2649ebab48bf230bde36134fef47444251e22af9eaf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADO1882540.
Ain't No Mountain High Enough - Epic Stripped Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71262530fdc746bf6989a3b9c557d340df651bd5bf682210ea784c0aba62dbaa. 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/TCADO1882541.
Ain't No Mountain High Enough - Acoustic Stripped
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187f6f39599b5c7c4c084ba201c39dc9aff280378c118880e47eb8b7e8f19d99. 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/TCADO1882543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fec4607f52416d22d4e849dbd4727b1c9e7c105cf95e39891c2e73d956802c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBKPL1977668.
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 0x427d72117cf5ff4286a7f09726da36650bc5d0ed5399ec5282a865d2e587693b. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBKPL1977670.
America the Beautiful - Epic Trailer Male Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a8c0d3008a6817fd8c5263e0764dc7113911103efdf271639d41be26276cd8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAEA1965189.