System 7 (later named Mac OS 7) is the seventh major release of the classic Mac OS operating system for Macintosh computers, made by Apple Computer. It was launched on May 13, 1991, to succeed System
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 0x54bd2a54499735688c50a4a1bf6ec9c44a71a363e9b630465c332a1b12fbec8c. 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/452cdc6e-7960-4d02-8a13-1d7561f163ed.json and https://artists.proofprofile.net/proofs/artist/452cdc6e-7960-4d02-8a13-1d7561f163ed.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 0x7b2a28a09ad7ae01e3c25f9a90dd1f2f39035f60c5e60d7d9f12d8e57f837e88. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBAAA9100522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2939e826e1c657bbaff30f006068cf78c390794bd2668b3b3929bd0d7aab428e. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/GBDPW0300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de5d755d1e4ab9b955b80aa1d4b5d7e487bf3faf9962c132c98c93e5e5bce8f. 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/GBDPW0300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cac1920a022db5c5c505c7c0e518767b471fb969c015527ab9c79608fbea08. 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/GBDPW0300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd0ce2b954d343b67c17e4a666203ad97665ffbceaeebab08ad4d30f34f5bd4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBDPW0300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c737036b986173f4b809928c81c39cf12eecbebee53efd7722b93a418962dc. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBDPW0300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d886ea3c2ab295a168faa61606198c29f18a40cfbd95891818da3113aa2db46. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBDPW0300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e249f51c8754455a05dadbb57710008359ac0d41f635ea2802eb0dc4f40b286. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GBDPW0000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7437fad36babd54533915340f170dbc62d89a8bc85b00d203256a2741496b0c5. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GBDPW0000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1633cba208cd518b9a97872e359d3a936c9cf63ab4d0a9d20806549cb7a4bc. 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/GBDPW1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdb4b9c9408ebdfcc99cb413433db339fca4d57bcba7bfdab806dc07f02ced3. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/GBDPW1100016.
Live Transmissions (Live at Tokiodrome Liquid Room, 17/08/03)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1633cba208cd518b9a97872e359d3a936c9cf63ab4d0a9d20806549cb7a4bc. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBDPW1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe15a59d378594b02302d06db86c25938a17134240b09512c2af84344807b88. 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/GBDPW1100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdb4b9c9408ebdfcc99cb413433db339fca4d57bcba7bfdab806dc07f02ced3. 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/GBDPW1100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c5721ed71eb8c213b9369a134755c8515b5166aa41a010aad6c99c1b13d8ff. 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/GBDPW1100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad7462eb1715f29233671c48eaafc4ee0e19aa1481431feda8997030198ae4e. 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/GBDPW1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d4a07fdab00d42a971aba3c642c0ea0b516f662d47d4956b802f3000ce11a1. 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/GBDPW1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa585a3df20dd82e3d4488df467d31eeb83a856a10a8c22e99c04086b8967558c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBDPW1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b2fbb42317012350e022fec1df30850fd748cac5e10ecbeb0172183200cde4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBDPW1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8191d346190fa7ce71827adced9740c0525bb3433758dda80d1299649ebcdbb6. 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/GBDPW1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e7b942cf488a2b2d41d35c75bc930f5f2000a49ee2b4531340d074bc2afbd9. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBDPW1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579a327ded440c24b0c3d2981a4263f78975b04bdf0b3db39aeb05d42c42a372. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/GBDPW1800006.
Alpha Wave - Plastikman Acid House Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c82a1835f38fcc2f80e9a3da11648b9cb99f808e34fd451f6044c35b2202035. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBDPW2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a9d37cba4208882e0ac0f78183fd1a339c6304f7a606f7e4d563ce4ca06927. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/GBDPW2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33137d189299f0748082e471d3761de64116466a7871681b84a2f93885ddaec1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBDPW2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248ad556f82c4d47da40c48750f203733420a51d68abb23f4412cdb89511f374. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBDPW2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a3f4ede1c153a914d96f3748c6d04c3a0d9868ecad617865283e0fef06885e. 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/GBDPW2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a9d37cba4208882e0ac0f78183fd1a339c6304f7a606f7e4d563ce4ca06927. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GBDPW2500001.
Balance 020 (Mixed By Deetron) [Un-Mixed Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e875ca7e2d5292438fb9f62b53832fc57c2d28b83c600e7664c3b7a9150e00. 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/GBDPW1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49aa77e115de56bbc9ed707b13a76c8bff4ed8e1bfc4863e7756d39eac54452c. 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/GBDPW0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b3360161627eae1b83bef4a2da1d1a112f2050feec266d77f8cb490678dc70. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBCFB2100651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e0e4855822e8ee0a71ec70b3254d967bd3f5b23d771cb181e7067f34fd64db. 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/DKZVA1661099.
Fascinating Rhythms (Sound Systems & Dancefloor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232eefc594c681e695b698da466b46bee561a1dbdac05c54dcc8af5d8ad21cc5. 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/GBAAA9100531.