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 0xdd28853f0862f81f1e60d744290f4ad26210ad66c35de6a2e67f09634201ba0b. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e750f677-e7a6-4e9c-a57c-57848bbcb40d.json and https://artists.proofprofile.net/proofs/artist/e750f677-e7a6-4e9c-a57c-57848bbcb40d.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 0x389ca0eda99a08a0a8e92634014352d54ef8bb15857b7fa0b4bcad51954431b1. 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/ITY862400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b25e093543f91cd36ae0b5492384bfcc626d06e9ca739e145d0b04b37a3de5. 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/ITY862400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6624143927822262e4d3c5440cb92b1e95b29a200cb2d3fc9be55c0592d32f. 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/ITY862400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a45ec4c2b0bf00c29a08c69f3d81b18222b06eef79a0da5807b06d0cf938ae. 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/ITY862400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b7e8260ce9e2e5f37506851c4c77a80dce8e0893f82a930ad64b46d1eca9cf. 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/ITY862400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3aa306b66f982ab9cfa60a3f0a8b7b08a746e15830183f41d6eb799ef8d3ee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITY862400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef64d3263f77610506b290992868f5febce58517623b25b7af99449f8ed45429. 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/ITY862400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cd5fec9bfb4a7092a1385387b54db9ae00c3576d2a4354e66df9602de3b163. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/ITY862400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18725846e07f84aedfc731102065ed25023fee6031b9ecd701311bf399ab99ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITY862400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26af3541e040221cf1e272051b0341c12b84950d15157280e282d39efdea8d5a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ITY862400090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae44930998687f5bb4a5d6ce4421489c36f06925f080ce9b766e4bad99d9ccd. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FIB9U2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1fd033274562d6849daeb5481cc5705b0f18f174cfa718eba5ac20f6d83648. 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/FIB9U2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0717ade6646a6a509293efae8f7397dbd409ecd7ec13c356d19a62b8064685f5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FIB9U2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcfe2aa17975bbd97fd3a7973674a0a39918210a05aaea4c7d6a230809b09a9. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/FIB9U2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32ac877f2d91c76d77301acff17d547f4476f501d98a9c5e9e37f55fe22f50f. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FIB9U2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6405e384f737e54c04c71f718b67a055591a71ac3d16cc2914d9e01e245f81c3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FIB9U2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b8fac0da6d5d24a4fd95306d4e187edc7d7d315e4bffe7024c4cbf555f4b1e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FIB9U2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6c6d43316018101b57243100b24a79e61c0774b393ec589e37db6074ede670. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/FIB9U2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11259900a19cad96fc51bdb18d85f0e299391f94ede4f5db766f4da37f4d4d3. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FIB9U2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716877a79d38971abe2d692c1e86e775a82038a1597baf2bd9130439458f7802. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FIB9U2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3e17af8a67fbeec29530b9f222d16a6360691e617fe880440e80bc386f9127. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN52083987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e19e9e59b9b14b30e14f998e3ff29885d553ba5bbdf3fe295c0e102fb951c2d. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/QZHN52083988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe21a878018bb407e5c36df492a6b5d883631d35e9fc65bb0727e97579f7016e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN52083989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd176aa6aaaa02c61eb18320643c06a96806b22b9d28b6b09cd7c710f4227d1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN52083993.
Mystique Sorcery / Obnoxious Path to Immortality
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237bb492faef040a275690041f94596f370ba2450fbe466291c00991a3f39c4b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FIB9U2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5d491d157e0c28f6746f3f20e9ca9c36269185f3e8171303fd5d5d67b1b49f. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FIB9U2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701ed4164a70f1e8a698831e2fbdde0052f7ceb7422f3cdcf2d8108d06674b26. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QZTB22262825.