CDM may refer to: Arts and media Celebrity Deathmatch, a TV series CD maxi, a music release format Organizations College of Dental Medicine, US dental schools DePaul University College of Comput
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 0xca4f904781859eb47dbb66f3b3a009c72f3673274340189a301651f00c5184c2. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b7ee040-ebfb-4225-a4b3-8da37063e9ec.json and https://artists.proofprofile.net/proofs/artist/3b7ee040-ebfb-4225-a4b3-8da37063e9ec.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 0x69946f67ff5382fc525e840d82a8d972b7238dee54ce8a96dce5de4c36826ae3. 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/QZHN32247045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc45a5d4958b942fee2d462733270792bcc8e3b654544365b036374a826ad777. 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/QM4TW2284318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f4c7515c3baa7485824a2b0c34e4c08cbf3a29cfb5353b66d19d175e999470. 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/QM4TW2284320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc82081f1f6382ec3ee951686642cd662749ba2450aff51e626609e9c5104e78. 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/QM4TW2284321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d9a74298f953abe3bbdf419365ddbd59e8336c1b949c6270654a92e9aabadb. 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/QM4TW2284323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ef18b8459406aab9be784641a71982bdad55e014904b0941790553727bb971. 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/QM4TW2284324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdaf49737e63bb72c1886a7c1b1c9289e62dd4188e8a354bcb4cf04d10c23ff. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZDA82223289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a965cd1de70741d3ca8b8d7f9344eab7f3c6c054e9e4708f654b5ac1a8952ad. 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/QZDA82223290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe17e43d8f6c067114a15df67adb6ddc07d41d22d80b485b913740e98be87d6. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US3DF2216223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94d7f95b2a972433bbfe7b6f930375c3de6b2bc3dd11ae74409c3b1f11e2595. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZN882169002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae18c1b4b913db20649de842a00cc7f0d67dd4e6f18b0ec3e3b25af35e39d73. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZNWV2146950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a9f62d21a775c51d3445a3e64e04e3f01ee02a2c9e794ecc788e8682dfd52c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZK6H2134900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd1aa3fd5175665b8030e47d538557f94ee19c0ab61c02fdfb85b9fb1e4f89. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZHNA2161921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc3222ec3b412c5a9c595645bd22a56ed20b88317995409b3b1e6924057bc0f. 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/US3DF2210115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31233a00f66f3129dfd2ba73ee67f3c4644653dcdd12c7b17ee4a2cdc92a632. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US3DF2210116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8708a9fc9eaf1fbde9dc6cfa7c99b67888f28542d0aae7b74b2bb1ee759dd4fa. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US3DF2210117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa39883de84ea5954a3d3ca47bce318ce123dcd290c30bdbaf3b3f917cd0586c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/US3DF2210119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e3e8c45080f2ee6962bb1581b1398b1f454251aee9dac9ff15e3306d64ce00. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US3DF2210120.