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 0x0507527f4a8b0644a2d721cffa1cf58fd0c6eebde9acc10485c7126f822c43fe. 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/60066673-8c87-4902-9a7d-f9dade312d01.json and https://artists.proofprofile.net/proofs/artist/60066673-8c87-4902-9a7d-f9dade312d01.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 0xcf030cba89b335948a8ce7027326eded516ef85cc2c918d2bb8c17aeae11364a. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/MXD782004065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae6af1cb11132589c7e4bc01c8e4e2cddca468170b1e9473738384298384811. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXD782004768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaf9ef6a0493938e5f43c5cd3b782ad1621a46d7a7c4818525d8a87cad199ad. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/MXD782103529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfe45075dae2a36d31008df75e84c7bd237c7edcd935f2f59f590e2b66c3362. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/MXD782200847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6959b83ab51511e116594249d16ac64e98df26cc93bf98da5c98a64e828b1b0e. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/MXD782200846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bb1213fecd3bd6b7faa4b2f5ec540d5f90b8e771b3f6a8fdb2e9332efdd351. 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/MXD782301788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb1285f662762049c49dd3d4d8a3a780857c3c7b70da409256393882ece9bb1. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/MXD782402076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda56ada145c58f094ecd59e2d54d8a9db15534ee24fc89b3f108fba0d82300. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/MXD782402137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7d458f17b2e37c3b0316c1dfa361b77d79f120eeca144c042bc3750e0f98ea. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/MXD782402333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda782150b90c9b5fb3a5644cc96fa2a712c7cc796a9ce109c6ea8a6ad616eefc. 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/MXD782402345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86488246ef1e5a6fdf0152b1b62ed3536dff0de76f0e80bd4a09284c003040d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXD782402338.
Black Panther: Wakanda Forever - Music From and Inspired By
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a70303f8938fc4d2909ba626495d73c6408e2bfcf31683e5b0e01604f25bb64. 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/USHR12244835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fde83fae07f2c6785d494f3d3823870f183f6c6a7f3100f5a1488f3bf904d8. 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/MXE672000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda39817cb66337338816586914a223bbaf829e4bc4c73a231dc0dbd9ffc60404. 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/USHR12244847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311e9b082caa2d70ecccf16c20b225d0260ecd04e98125b6552ca04220df23a1. 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/NO8WZ2404020.
Con La Brisa - From "Black Panther: Wakanda Forever"/Film Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2e6401429de3a3f3aab7f2272cc306766b31d0102abe332cb86a4d958300d2. 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/USHR12244874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a826bea0f0447e7ed4c853f0a0f0895f5203bb9a0be05edbcfd7b86d38ee71d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXE672000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fde83fae07f2c6785d494f3d3823870f183f6c6a7f3100f5a1488f3bf904d8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MXE672000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2e6401429de3a3f3aab7f2272cc306766b31d0102abe332cb86a4d958300d2. 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/USHR12244874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b38f4c60bcf9feb14487cd468f88ebb6b01c0d3be272d3ae53a8c779303538. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QM4TW2284143.