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 0xa36e65a15bd101cd02b0f0116fa484ef9fd7c955011a8c8c14d5efab5b924af0. 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/c294f3b0-2e40-4f92-b486-d62cf30ccf3f.json and https://artists.proofprofile.net/proofs/artist/c294f3b0-2e40-4f92-b486-d62cf30ccf3f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Halo Infinite Multiplayer: Anthems for a Fireteam (Original 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70863725d569a73ba2bd9b77a6f64a5e04c9b7c10bb7c7dda7c2f3e3e9127aee. 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/UK9AV2302707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb932e0dfd98e83c4ffe7e125b68b0f4b7ad4d79b2ea9b537e4fda2054511a8. 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/UK9AV2302708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa621e82ef15b7baab407200b3293e9d59746aa0913c43adcfcef5acc788aa2e3. 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/UK9AV2302709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895c07b106f2ce0d64681954ee7be9e8e4f1152b9ec7ef6cd0dc89a499babb85. 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/UK9AV2302711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe909c86773ed3f900a399e0aadcccb2e650c8f28733737be45aee294aa3b3352. 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/UK9AV2302714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb88e18bdc20617cd7e5d1793ab0d4014e8799ccbd00bafc4fbc8c8c81632962. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UK9AV2302716.
Halo Infinite Multiplayer: A New Generation (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74ee8d645406dc7568ca2758aad90bdeffaa84242ffdb6751a6f3ab9f2a78db. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFW2181627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65213cc2858a931904359ab91212033497f833c36925644f48f5f3e4049eef34. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFW2181629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd4c5be5372e7fc4137087e93968fc80b180745c23498d54cac99a2abb571fb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFW2181631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b118f5f35ef72a380cd62d8ee9b5e93c9d0d60e8c7a8e6a2dbe9c4064f36db. 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/TCAFW2181635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5984e0dc275c426fa830d8284ca81056cc024d6f288e8b60029a835a3ccaee69. 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/TCAFW2181637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbd2ee1798f8d2534013579464388b4256659b56629cb0996ce137f66ea2cab. 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/TCAFW2181639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648e7d64681f707d785cb01a62d606a6e5b145a7efd593deb5d084080fcdb234. 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/TCAFW2181640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f65dd0d2ecfcbb8427281a7b2bc7c4cf7a44dbbf2d656354ca06708b1de6d2. 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/TCAFW2181642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe57637ba4e97eba61a6be2d46f12f420fddbb1327364fc91956c6a103e1919d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFW2181644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb1ac2d9666e37eaa1b9340db143a679fdde406d3cebce58e1845557856552f. 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/TCAFW2181647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7776f52a61d52b2762b04d44d3628fc0d3adeb44e25fc778a00e575ade2a80a7. 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/TCAFW2181648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98ec08b1281f23bcf15a112615a3acfa1fa0a5bdf38ce4a08b14c45d0918f1e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFW2181651.