Yirrmal Marika (born 1993), known mononymously as Yirrmal, is an Indigenous Australian vocalist. A Yolngu man, his music features traditional sounds and elements of Yolŋu music. Early life Yirrmal Ma
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 0x39cc3993c9f00b4556a324bfa0d18dfaa45fc708ae06b01ace7ff9678e36a551. 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/1272817a-6199-4c8f-b64b-9adc22b19c0f.json and https://artists.proofprofile.net/proofs/artist/1272817a-6199-4c8f-b64b-9adc22b19c0f.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 0x1f12d949c48d939dbc61c2425fa8006b4212ee12102d54bb21b2ea5e9d080896. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUMNJ1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb515f534e7326fa2fd011e1755dc93e407f01478b0561e89e8f128ede60cfb94. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/AUMNJ1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94631634e39ec48ec2d6fc0c6f113f99538ef6b3937d55c4da0d2bde43f9d2d2. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AUMNJ1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfade9b5a89b09270bd57039762860602c74b0a3a0aaefe04f882db274d8f6572. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AUMNJ1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f22f55b2c9698be32420c28a163243f7e32f6c3046a0f96509bc8eaf246c26. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/AUZN32100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbc51b793b682ed972342de9b2d23b1d6d57ad9ef9dc10ba65d7b58891df858. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/AUZN32100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e20d38301833560bc675506e83ed0f5720c46f4ee0f6c1c123f40cd494552a. 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/AU1H12100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94631634e39ec48ec2d6fc0c6f113f99538ef6b3937d55c4da0d2bde43f9d2d2. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/AUMNJ1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8aa63d486f89b930154a7bb9036a2edf0c149526662f106c0d42e02f873c905. 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/AUUM72000993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ec28d9809c29c8cc700d9cad8a7066b0ddf1935900321de9c3a1c740f19d8d. 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/AU2DY2100097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccff922724f25ea5cee246a8f9ca55eb4814ac9102bb2c25fe005c056d21683. 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/AUBEC1709115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121a47caf78387f150c2a0b86a50cba830e6ec1a62b4e506bc3bc77fbff31372. 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/AULJ31800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dfad1c9797f9e8d4477295d6cca3d412d4984c541b899081a13dceeb9458ec. 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/AUAB01700272.