The Great Dane is a German breed of large mastiff-sighthound, which descends from hunting dogs of the Middle Ages used to hunt bears, wild boar, and deer. They were also used as guardian dogs of Germa
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 0xae28cc5a3ca45d06735348913693651a6aed0c951ca76de6eaeeedb1cf232731. 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/cb616af8-9c37-4b96-8274-172c0a2e9ae8.json and https://artists.proofprofile.net/proofs/artist/cb616af8-9c37-4b96-8274-172c0a2e9ae8.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 0xa805fdea0b4a5c680457ad303173776e0960b36bf78ddca85feeac95a6491695. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US25X1084508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15138b4eaafabc0c9fd2357e554e775c70d304a97c3caeff1374dabe7df82c8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US25X1084509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd724a76118b0a0523dba917074fedf67a9800d6ff7d6f81b8763d586e4d715af. 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/US25X1085717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dee93192aa335e9760ab2b605bf4a1128dca4c2fd0cac9914768ef2cb1c3795. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US25X1087585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd573b8fc7eff13970619c1675e75d982617c76aa93b0b1531c9040bc8be1ef8a. 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/US25X1087593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8444ca30fd5024b5a93e49d6d0ba4f484ceffefa3feb68ae27910ae85473f9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/US25X1091335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b07e86ff8f5ce51c702f679d243547a097b15e25967ba91e3f3c2d1b1e6ef88. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US25X1800497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353565fa4827e3f4e45a0a8f5cce2a6fa862c71ab8e063577b6f2cc1c9c3654e. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/US25X2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c1f8feacdfa9d31abd2145b32161fe9d1313bb94aedd8cf2e60fd180b1af3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US25X2000068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c4572dad153cd5768ec76d02d1eb87acdb1cf3212a844cbaafb8a327c4d4e6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US25X2104237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe690658b28aaec720f0df857e51311b0e4749739e669824902ffe3c1e14792. 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/US25X2104240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36781bf7834cab735f21c966e60c3cde1a2e3e47d24df317c7bd6ffe63829492. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZQAY2345463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b151e8fcd95be308a3dcaf3a2148f657e66c7e76b5e94913d5ae4bb05fee40. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US25X2105787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12723d1964e0c6ef1652ac7b1275121c7266714b5dbaaabd440189f226099087. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZQAY2353874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473753e9288f85ae652b041f5147c74e3fd06ca926296aea9ad3c29530853266. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZTL92400808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a884ae3a98a86279d20d015befdf19a5e7ad006498ef7da4cf2f4fda3925188. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZS7J2424727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31445ef2a52a45735392c1b29ec718414786ccfaf393d69f2b4ab3d5cf52ce5. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZS7J2426297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473753e9288f85ae652b041f5147c74e3fd06ca926296aea9ad3c29530853266. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTL92400808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82a879d213868d1c2611a4dd9951ef030181045532abd07d637e8e5b41e93fd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZS7J2402745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3ad5833ff13c5c87180bc3f2ebf87c1aeed051058013d8acb5d20760d94294. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZS7J2451457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde03702399af0f776839c3eaff4e1151f608c0784ec8b50fbffedb8138902ec2. 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/QZS7J2479753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0383c7a44ef7d66c4939048b13b27398a6e5e3f6a16c3a376706e23304b134bd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZS7J2453268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cf99120af49558c1f4652336f5d7fcdcff777e71eea8389fafb52295d2937c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZS7J2471087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a884ae3a98a86279d20d015befdf19a5e7ad006498ef7da4cf2f4fda3925188. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZS7J2424727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f32df5e997561dd363476d61904cf02df4d0eb47ede47c4936abef0e7d8b820. 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/CA5KR1956233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a4faa63db941eeb4e55b7c5f81e6278fdc2c511c5c0d386677d1cf05ec1fd. 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/USDM31567501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69fb5e864da998d1848038a96f93476ec0985c65feba47200ba316d5f1ddb46. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/US25X2004428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10945c1c7b7f15a5436dad5914a27379371e1da22bae8db3c6b7d8987cd377bd. 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/QZFYX1940991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7445ae7d1a335e22b83cd11647568f3277ebf0033b72ec3d6a6b1b71607314a0. 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/US25X2400517.