A boombox is a transistorized portable music player featuring one or two cassette tape players/recorders and AM/FM radio, generally with a carrying handle. Beginning in the mid-1990s, a CD player was
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 0xeb61814cf5d7b395e183d1f3266d1c74faa819b4ccd481e393cfc463fa6bd824. 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/e19cf819-e41e-4599-a678-6dd3a0b0997c.json and https://artists.proofprofile.net/proofs/artist/e19cf819-e41e-4599-a678-6dd3a0b0997c.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 0xb95dfe05b13b4bf4918564e5996f32d1c65a7b5413afdfb0a152575acf7d448b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR10S1753309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5935f170b9834cb5eac14860db0c974b7e081a49f9bea42f8f859cbd7f51788c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR10S1775097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa604832659f08c83066e4d9131bbdd8e5571b1a5aee0af797ff22187f650f36a. 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/FR10S1775101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbcd51cc533daf28c546b9a0be519f1157c02c4c0c152d1f6bf92fda82794b2. 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/FR10S1775104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429292a80e6c9c2a1ec465eb9822752e18c56d2bc2ef48734736f7b617819a19. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR10S1756590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd162bcc5d2b644ae5431d8be93cb080adf18dcc3487e9519a81730041acdc689. 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/FR10S1756593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb603ed1e741290cb87c0d661dc3b67c7f82682d2e1dc8dfc7b963e57b597d1. 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/FR10S1756595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc401856b63cb23df687186383b8ef0e8677814af8a9ecd3a6b25920ab95f9b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR10S1755221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30943ea47fa8ded9e2d94e350a5619ea13fb660120e059b6a05061938ba9cef1. 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/FR10S1755222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a78034df738aaceb36e5c6461292992fdd4e7fe92364e1f0b54bae256c9b620. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR10S1755223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eab25a52eb9c98dc985b846b06f86691b1f5d483b7e4e2e23ab25ca700c4389. 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/FR10S1755224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0def67bff861c31b89f3a2d858e85000c0970c13e4d6e34a6524b43996360764. 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/FR10S1755225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad5a5c2cde326c1e786de53fab1b1a7f812639b884091dff514b146694ebad3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FR10S1755226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadd24c4504fff63547ea207c61d0c1fd4ef4bb68e1191606f549bd47dc8fc79. 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/FR10S1755228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe478ebdf0028ca80c1d53511e510b400f98bfaf6d57524a1c6699fb44316ac. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/FR10S1755229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4f73f1dd54cfaf160780ebfc175143f7fae6c19c29e4d072ac6b64a6a7e5fc. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR10S1765503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163c494dbcfb8d0ff661accf2faa2713dc6b539ac855c0694ade96a37747ca30. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR10S1765505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445701c7e4978d310a96acf99e12612fb56cabd9bf2a363c6534846438dc089f. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/FR10S1765506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c9c683235088af0289ff16e4326feda945ea1ca2195c0f62f293d2f811af46. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR10S1765507.
Blendy, Miksy I Drugie Parodii (feat. Tonique Le Deejay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc929feb9ff373c1af002b0717266ea2a02b71205ac29d17d8eb387adc0f42bb8. 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/FR10S1765593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa1a996426c9a11d8f6e8258ecc8a667b930a963b4838fd7d0597536bf65c19. 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/FR96X1735036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2809f65c85d4cf1c3273f2007448c630f33424fb974f14b36ad6d80c97007f9. 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/FR96X1735039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc524d49d04395b4ee6fe7ca00fa564672cd1cafdb01082337afc393836cab2f2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FR96X1735040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1196170fa7dfb18acaf850bc261c14ed944752c31f029e58b26539272e266ceb. 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/FR96X1735041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c53ee4bed72531add018bea7cf6f41a9edc500ff150b2be3386777a6d37ebf5. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR59R1867111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3520f3c4228791ba1e3075af9c67e9488dca1018fd4e836caa511da260dc7c2f. 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/FR2X41904587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b1b57dae51c00eec6b24a8989202565d945a3d0b0324eb90e08be897474704. 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/FRX201965621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3c2da493a5ba129da3800cd43d0ac18ed85b19e02a7b8c70dab0525865378b. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/DGA052592048.