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 0x93e0cd3dd8cfe4278c222087435a1c0e829bf6135cc6dfea3cbf92fd74ef1f5b. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28c5363b-ebad-4cf4-933c-de805994493f.json and https://artists.proofprofile.net/proofs/artist/28c5363b-ebad-4cf4-933c-de805994493f.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 0xb4fcdecc5a46ab9ac9eccaddd3e8eeaa8d2a032c487118802151e67d4978a37d. 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/TCADW1869919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0ae51c3c23e2aa9b28417d4725e636474d8f1d7f563f10dab0a98264a61fde. 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/TCADW1869921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5dabd825bafa9b9895a01ae6db8ff96cf8e3b1beb78ff04dad131444ed66ff. 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/TCADW1869923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beceacaf968667c02f6609284f74e03b442a3e61c52827f635fd367e6c4ebba. 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/TCADW1869926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4391be9e036b1caf4ee5c3afa1206fe88848eec1d3d38d4fae3bbbea8a27e33. 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/TCADW1869928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8111f44ddd26a28bc5019aa13cd510f3107296a0d63da4053ddd7eae984cd2f. 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/TCADW1869930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87081f59f814a2e306ddbc7868aab0c502b2d6f6981bb6c17652f2b5180e3e4c. 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/TCADW1869934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499736c354556713923d717e545a13ff5b1b93eef8f55d2eb45dc6e2bc816a28. 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/TCADW1869935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe281cec812d33b1df8db7dec36187c8bf0815cee245fb0fa35912307a721e0e1. 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/TCADW1869936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32acc7f1e463d65ff9bdec635555f2b9d511d5ab97ba09ce75cec13e00b6df4. 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/TCADW1869939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e1395f69b37f8c4b51ff96d6d409b377d3b7da6ac1ea678102765a4c5ccfd2. 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/TCADW1869940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13777b8305b0aa6c1aa55808c0c7212691180fe5465ed6b9b2c2ef9ae1d6ca83. 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/TCADW1869943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbc9501813f62d5b4bd888b8f9e656ec331a69cfb9174742ac6e757d8cb5fe0. 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/TCADW1869945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eab774b94255b2e41efc946856111da38ed8abe26e0acf054a424d13edf0f57. 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/TCADW1869946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fa0c0e0c8c18897d8f82bffbeb7b15469d37f3dcf75e251f882f4ca329fb11. 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/TCADW1870086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9915faf9e9e007cd30fabe2c74a4aa84aa2b4543df9862976c68b9fd76007c0. 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/TCADW1870090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b38778d3c7ada2ee2e36f68e03ea57f2503d99b16d2422163a2bdd17a4843a4. 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/TCADW1870092.
Mission Accomplished (Advent Burger Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d408117529f3f81ceff312b23d41858e20da1cf412e2a34cf7fcf1a954146c. 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/TCADW1870100.