Ash Dargan is an indigenous Australian didgeridoo player. He is a member of the Larrakia peopleNorthern Territorian, 20 October 2000, "Critics fired up over Ash's CD" but did not find out about his ab
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 0x750ab083820df8c24960e8e3f227ef1782960e0dcc52442259733d1db4ddc719. 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/78f4b491-11a5-493a-9114-94bc77eea9e0.json and https://artists.proofprofile.net/proofs/artist/78f4b491-11a5-493a-9114-94bc77eea9e0.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 0xd07e78368365017118daff017af84dcdf2ec2bd6ee0c5331bdc65a70154cf87a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USLZJ2013802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e40c7ff4bb827dc0b56c04e8a868df74cb0d6e1b52bbc58520a11ec03d05241. 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/USLZJ2013799.
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Didgeridoo Made Easy: A Beginner's Guide
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2fd4c9129ab873c61928f4310d7cb3752e460db3b629d4bce339c2f888e3f5. 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/USLZJ2166908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3dda67f316f4a0c2116f4ea0f5ad134af24e73ead8325834ab127c4eed3a5e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USLZJ2025190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c378a312506084101c7f9874b863d9880f39cc9547a8cadbba07a62f6c25df9. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USLZJ2025192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3a1f3d592291d004b2f70460df01d1cda3ecbee7b6c3c1dc18268ee6e4e55d. 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/USLZJ2025194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6969b0d8557ea1faee543063672f5b46eb2711e945c74f2361e6a37dc9911edd. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USLZJ2025172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194ca7b5650203839221b162fc75fd581e7b11d342ce0cc42f86f00ac2974f25. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USLZJ2025182.
Black Swan: Traditional Chants and Digeridoo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c11793ecfe3a178305859cdc83b0943715a2342c8735b379e86caee2d4fcfc0. 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/QM4TX1534324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d9bfbd721f8a98bec8b32c36972cada4a6c209d0d96caa9dc20ba2da39eb8c. 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/QM4TX1534326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a9fdace291730cf2b995ded64db4109599ffd14992d23b95e744f5fd70a270. 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/AUAL10900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05285ff12ed7f67907a912cf73ec79a29d708fc82cd26f952bb245656b2aaba. 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/AUAL10800029.