Maus, often published as Maus: A Survivor's Tale, is a graphic novel by American cartoonist Art Spiegelman, serialized from 1980 to 1991. It depicts Spiegelman interviewing his father about his experi
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 0xc40bd2d6e6cc7874f336a92aae4b99bb0796f754e599c352595a4c1ce5a2e7c7. 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/eba0b956-f03c-4664-a072-11c46e3a3599.json and https://artists.proofprofile.net/proofs/artist/eba0b956-f03c-4664-a072-11c46e3a3599.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 0x51fd26d58d093ee0473d1a53f9429208cd6432ca84fca89b55e89143f94bdb69. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:14:51Z), 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/ISA110402809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e21d5d25c155e5f76b5e93e85d3b465d2ea604fe2eded6b4b62a4f30c9e2f3. 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/ISA110402812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce23971ae50213d5dd6857d14745d75247a8ffb7dcff303a55cb956e28ef479f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ISC110300408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2708620c4f79fcb7425888cf885ef26ba0904f7c35a657bb7931d408239ae0e4. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ISC110300402.
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 0xe42bbdb686c82ac26f067599f033c9571b4f709a67d09a78bcc7d5545fc1c807. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/ISC110300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646c2818e27c90e7298bf6937cea0343b160d4cfd959bc8adb8cf217077c5b48. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ISC110300404.
Í þessi sekúndubrot sem ég flýt (2019 Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3c6bcb51a6eb4f17148152bb8fd042324b9bd5ffcbd3a3f9ce8e4278be07ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ISA109900202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a26d23c65364ca9fcfcaa4d58dfcfb07c0151896765667d8db0a061916ee79. 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/ISA109900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53c05b74ec4c51774e7939f7fa323d162cd8d704c6b601e6065707c5f26f85b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ISA109900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfc4ba5abe6157335733192fc08ce05e965eda0e94016729173fdc250f5c7ee. 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/ISA109900207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd15e34470a3c9c1058486d316a9f14688edbf6ba2cf125304f7489d4435e87. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ISA109900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae82fb6a24e237018b925da7e696fac536343bf7f9202963185bfe69c5abc991. 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/ISA109900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae756cf911790f6324a9aa3b0ae18e1728d09a7e9ccd49ee2fb0538921d2fc2. 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/ISA109701702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cf544d3795b7648a8fa38556b979ff365ea8548781d056f1cbf10d378a6c89. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/ISA109701703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c1de5bc8c41f34444b960becb86f96f718b181a7cffe15c73e37715736c833. 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/ISA109701704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f94cdc365368e77f88bfefb74a10ecec77d10e8580c21fd43ff72705a52dcee. 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/ISA109701706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6564915bac03a82dd5f42b877636dd4d877b84a31b5361456d9d1adf25266ea. 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/ISA109701701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa676eeeb28ecd2602bc79122e50a3a491e407868ef394d0ed3e2aee0d70a6548. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ISA109701705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d234295c2e3d7bb59c34323c4be6e979a5033bcd11cc80eba66233709c30db7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ISA109701707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a795576841243823a323937b4cd38745a668362905a5d3bb5c3b5d7d2b485f6. 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/ISA109501302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279181a3efb7bf7559269cf050c12a2e3134f36d5629d821dd671da22e755e25. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ISA110507107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b3c07a5dfb393280888eb6153f767d7abe69c69cdb256ec4252f5beda56e8d. 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/ISA110507110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbca5fceed6d9bf3c62c99b65e901580a4d74c503e275109c32b18a476dfe785. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ISA110507111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59238443d2ceceb8f6ec094ad05c97c81c0701b6924cb32e130d4ede99a385c0. 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/ISA110507116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264af4ee8a95e8e6a6872866b56c3ff8b02311029eca0d0dce240c30fa3c4396. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ISA110507117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104d24239926df234af8c489c3185a1a6de1c2d8f3d5472f565bec284c340cd4. 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/ISA110507203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc754b4cf1c92a7f05bea71ab222a006118009cd63520c5c7f1828cb6e98e9fa7. 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/ISA111102201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84ecec97d9d31a4f807812a2b168c1f14e075a85a7e8dc5d02e04461c7b48fe. 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/ISA111102202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f7ec04f45d6dcd63d6735b178fd10b67f121c83c9f6f5dcfa6e2a2876ce12c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ISI109500407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50de24f29013bae72e5d8223c21c989a363eb7d6fa798550f7d2d8b5b1795a2e. 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/ISA111102205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed381005fe12f391a7b7875d1baf9e61708331a9e46353560cd392f803f86ac8. 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/ISA111102207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84eba0d56a9137498c927cce98ef87a04c35d182c6fbebca25acdbb396f6a96e. 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/ISA111102208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab267804304319c9cab7d3b54a62de6d1eb5dc6c8ab22044ed1c06f8bdb84152. 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/ISA111102209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04af6442d50065ec46d06f4d9ca04416ba94efbe171623332d0dbaae5cb996bd. 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/ISA111102213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c3b6b88ee04ce812b87cec5d11941ce7b95c497069e61e0f22a9eb4120e72d. 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/ISA111102214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac39f44c8182f98c151a8bc0f451b7fc4cd37746cf76a5c3d62bb2a9200729a4. 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/ISA111102303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55f84f8b3fc84a28457e1b61545d7b849a9c519d2a42f648ec03bd4b41d0382. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T16:27:57Z), 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/ISA111102306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15997893b6a17e0675f3bbbe0711fbc23757ed8db7397a5a2077c2a18d1e9279. 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/ISA110305806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0a8b553ec443bb20b6ced6dd7a7041619899dd59de72441e7cf622e7845f09. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/ISC100201133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902062cacf8a1940ada437a8662434356337e69be3302e91b961155efa84cc51. 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/ISA109802906.