__NOTOC__ Maw may refer to: Biology A human's or animal's stomach or gullet, a bird's crop A fish's gas bladder (swim bladder) Abomasum, the fourth stomach of a ruminant Games Maw (game), a car
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 0x7fb1a07cdb4b11201aae74a4ecba8a874b383c0a70809e2f32d9f055ed908f96. 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/30c04d78-b6f8-4fc3-adeb-0968d2ede6ba.json and https://artists.proofprofile.net/proofs/artist/30c04d78-b6f8-4fc3-adeb-0968d2ede6ba.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 0xf196abd7fe75cc547f90ce9121cf03c4b339b6e8c91557f5a23015b0d9f83942. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:51:59Z), 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/QM6N21870349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf196abd7fe75cc547f90ce9121cf03c4b339b6e8c91557f5a23015b0d9f83942. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:36Z), 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/QM6N21870349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a049920a23a585b9be5fb84e5205d7c36ab416048111fb234e5a6879b9d45ad. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QM4TW1906763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d84aa182c3689ed6677cb785a9f37ec23463f3fd86a501a72f581c5689679fe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA82028711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c2438bd3d8e43d8b9a3db3e200886593a816d4c4ce03a2343f8f2f1a976ab0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/EEHU32000677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e4beee0502503f8687effcb644c7c40d92d749ed9a29a19c39e5d1e3488a79. 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/TRUM72100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb84792f4ced1f75cf52a69753925d1cf62d4c4e2dc15424b589093cdb89a0fd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TRUM72200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5231e506d45b78f738704c770dd00e6910c3a88c8eb5ad2b029f46c96d0a5fd1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TRUM72200122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474f1df9747db4312235973c728cef0170eeb403ca2d9e4f12380c57df791353. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TRUM72200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2289bb1fd0a85206cd401b3dbe6d4b39774de2410d2e092af2738a8670b1a80. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/EEHU32001896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85ab06fe7f207a5274f88fbe8ec2dc7c1b8200308a4afae3f2ca212de863458. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/EEHU32400718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4857f10259f04e10a0014625056870a02102cd8347229f2ce98b5a1e344453d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42442611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27a13fbfca1d348544e40de8a6ea801a9c17be5823fe205c8a66b81707237ac. 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/QMDA62127685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b818efab55c58e7ce1480749698c071b8091ae316805f9be3872891fda6f15. 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/DGA082435027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13de6803340012ef6af7a59b85e7b1ee72f4763d2ed7216918e5849d7f469a0. 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/TRCAE2300173.