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 0x9de42f5f6fd56512024cb2214a7e8812eb56fa29cc5dc3fb7a5c066a505b9d02. 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/7056076f-4509-4cbb-958d-e039fcbdb60a.json and https://artists.proofprofile.net/proofs/artist/7056076f-4509-4cbb-958d-e039fcbdb60a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Sonic Of Bassdrum (Official Toxicator 2017 Anthem)
True Dedication (Hardcore Legacy Anthem)
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 0x514a912f063eb673bc4173de83abe4f49b76cd0b182e0b9a9e0a28eb9f889330. 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/ATR981199864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286ac90d39ce2ea7512d1d47ad9bae0116c31a7fe529b2454de70910405c269a. 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/ATR981208365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf85c75978fa18b05e2a6847e9dc0066f2fa48daac41c9d29730303571942b99. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ATR981208366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6497e180fe62467aaf2056cc4179bfb688023cd2a35bd5bce78c41d25818e213. 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/ATR981211080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1025044df0bcb99e1386f04e6689b9597596ef02cb68e72cffee6aa9d7554b1d. 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/ATR981211081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf733276d16a78f9c5c9ae815fe58e45f0e5d49fb525933204237793a5e58ef. 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/ATR981237859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f65eb2e0bedd008e31cb61f2be47c436bcc5cd5c09fdf95f4419bf9a50b01e. 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/ATR981237860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37dcc61a68d9a121a5d45e6c5973097704c1e16fc2d1cb6148b0f41008610c4. 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/ATR981237861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dc5ae14d973205cb6122c82b045256897b128351f21fc6feafb3f630a79ebe. 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/ATR981237862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb69a040d16ffac920cbff47950386906d2e8c58acd0b5d06b1d999c3f63973. 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/ATR981237875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6d8e2bdcc17f2aefa0a778531635396db617724ec55cf24748f1e41ebc50b1. 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/ATR981237863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955c67b25bcc07c4246c3ffd46f33a04ff81595957debff149fb6e807970e1da. 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/ATR981237864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81a7f5d9475eaef501218f5f03702f568c5e92898593ca2452404781ba2d06b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:09Z), 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/ATR981237865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c69514cb5421195af24b310aebe776ee1a57cd47fea469ce66ea2fd1221ae45. 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/ATR981237867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a450260a77b9496d230197ad51bfe0e108c34074798b05d305f0aa92e93d43. 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/ATR981237868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de254c36a86d3061a932bd8a283f170935ac8e86f974dd6fa03a30ee1e2adbf. 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/ATR981237869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd09c58f30b4055ad514c2279fdd68a6b4e49a2e977f5166419ee58259fcbd9b. 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/ATR981237871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298a004c10c018a26d59880e78d27f25f7fe889f76824acb61bcbde59d1933ae. 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/ATR981299848.
Strictly Hard (Official Toxicator 2024 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7822169bf2c18b59e2276bb265492befbe003a3760483df029b89887f2d1016. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ATR981347439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4704c52aabcc8a7d208abee5fc6158bdeff539b719e98196ef791cb649afb142. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ATR981265839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b0646e588aaaf7a7645bbd47129ea34300b9b09e9f3d8f6fd47ee86ff5c297. 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/ATR981265708.