Macca may refer to: People Mackenzie Arnold (born 1994), Australian soccer player who plays as a goalkeeper Paul McCartney (born 1942), English singer-songwriter and multi-instrumentalist Chris Mc
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 0x8397a16a640cc8af166e9c8ccf264d07e0e9553f46247d42907918f99025aeb2. 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/71a43890-1582-4d13-8c7e-ac0ccec744b2.json and https://artists.proofprofile.net/proofs/artist/71a43890-1582-4d13-8c7e-ac0ccec744b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hatiras Presents Macca: Late Night Sessions
Love Is Tender - Hosta Drum & Bass Remix
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 0xee4de6dbeceb3d4f3ef6c1394ff4dce5f5f0ce161abc56d72bce72c514f9e212. 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/GBKQU1167173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c467774bb648a8514bb4c66ceb305bada362496aa311e35b2e6298f41b36ac6. 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/NLCK41400320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02aa2131aec5584257f48368e6a2c3ccf1267c2f4fe9a968d2084376c046def. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLCK41400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30675affc3cb81474d086a776738cfabc605e614d78e1bcee4736fa302374bca. 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/NLCK41035788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4457c3947f460c45a01088140cb2e0a420d105f88d559be9b58b74b7cc7db42a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBRF51800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd6bf9417e1c090fdb39dd3f9e3cf661de126c346cf4b98fa5f554506d99ef4. 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/GBGPZ1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7e6fe6a96042402dedf028244e3f3aaffbb10debd65c6265366c9e0726d85a. 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/NLCK41054672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d03b6895a7c63ff7c3bdf57b62bdbac2db9c5b701cbb677ff581323f01fabe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLCK41055110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6430f373b2198ed659cd052b6d088ab29ee690ea63e174b4eeadeaa44d4cdc0e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:05:27Z), 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/GBRF51900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53599cb998c7473e69196c97d543180fa77f99ab949887f016e51b45fe922bb6. 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/GBRF51900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab94dd8ac33e70af1e3a8655760862f6496beca54c767e55846471953c981743. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NLCK41082242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd38885c543573ed39e18959f731370838bf3902baf25a225651fdb0da094bb. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLCK42413681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d895e139d72d87cacf8174d594c15c5dc0d0ad1c4a6222c2bb2784ec76c8a3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLCK41027951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c549b4f707ec14dc556d1c6522e7fa8aa20b49f5fc6f7a57b163a14181255c. 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/NLCK41050279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d895e139d72d87cacf8174d594c15c5dc0d0ad1c4a6222c2bb2784ec76c8a3. 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/NLCK41027951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf66ac7bde680ba79adec1aff3b2ca7ce87a204c954d44d796d895b9861760a5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBCEQ1900059.
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 0xf8ae3b4ce35ab243442d1ad99abba383cf8d77a2d73fdfa5e4fdee1a7d39b60c. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/NLCK41066957.
Liquid Drum and Bass Sessions 2019 Vol 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3e552d60f05974c0b4d44424b5b3ae41c25307d1c2b41907724b6d64f372f2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLCK41035790.