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 0xb6e4df6d68fd622d07c9f2c214886c5a98c4e242701d32560bdd107d533ed4f9. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb96fc45-bf30-47e2-a5b4-b38920ed04e8.json and https://artists.proofprofile.net/proofs/artist/bb96fc45-bf30-47e2-a5b4-b38920ed04e8.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 0x55c4033fa7f561b370ea9313ca3f04816e6595d1fdd0f9e774b32e914180e4d1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/TCAIX2456495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca44a3b1bb9b23cd36cb4ed9902b1baf22babeef1fd55949a37b34dd443c47b. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAIY2413583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f08bd0c11b390931cc24ce4d0fed76eb6c447f9e0b837fcc6f3cdac4e9bb367. 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/TCAIX2444727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7842343eca6db92d78aa2088bc72f4a46d4667c75baa771a61c9ff3756b00c0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIX2444797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e90a63519b1c775415232f170f9d68bd404a4c23c799fed31fce8a4e6e968ce. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIX2444821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75dff518f75f71adb0682d4b6374d5a8c346cc96b0df96338fc4d99daebde18. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIX2444838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cc9127acba90fea901dfd83a026446afa86e8dbb6b111ffa82290f6f9de4a8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIX2430689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf64732a88f6a76c2c0f3cf41b2de0255d55e274de2616e8b7f8bcaded0fc2a. 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/TCAIX2417566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc0136a8ea2bf363605ef268fa1a271fec7a916e4eb9ceb9ac2a2242cacc7b8. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAIX2417597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb89b9f282a3c75b82fd9e632da406863f7aeaab99678a2612f8a5faef5829c9. 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/TCAIY2417630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cdfad544f0f82d3d2aa807bfa7adfa1f5e0b978be172b4504d99a54940dca0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIX2417671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcb71522d52dc6677b6c9c90c05e2d64ccdb590dd3e0974ca9f276fcc9aa8a9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIW2407894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12ebe2bc3ab7d160e16cde45a7d67e505fa1f4a3dbc895ebc70aedadce16176. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIW2410916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e135997a0baaa924772aa9973aa8800e1f4b8ea2eb445fa487d6bcf1822b0f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:46:59Z), 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/TCAIX2430228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bfacdd76f02c87be2a6cf9895ff1f243de95008948bbada8975a5ed71c8cc9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIX2430250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0785b95d9759395a6a736313d082f6a4fca24107396a590b97fe499c8a7bf7d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIX2430260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce7be67b82399292a336086cc0b9fd937b835cb745d243ed3a1900c3c345a01. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:52:59Z), 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/TCAJD2411311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e14389facd9cfa44470f3707e5da973d3d4acba306072ed02629772917d959. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJD2411318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae550a023e16f2567eb4f73009a0892c05243b6e0adefc1189c7ff96e0306b29. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJD2411330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4274d9cc70396c5ac2288ba8c82b1edb2f1a9110cf8b0d19b0b11655d947ea9c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJE2411342.