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 0x4e79b6c37b977329e3d93fe896da480899706e5f6c6be4170878d64d3e22731c. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d449c3b-1212-4716-81e5-902704aee691.json and https://artists.proofprofile.net/proofs/artist/1d449c3b-1212-4716-81e5-902704aee691.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e42915adae825c7f4fa957848c80171cd1162576fc658a30697f101ac14c0f0. 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/QZDA42427066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f49f2813cc30c2b54011a166578132e1e9f14793bd504577bfeb263fe5f25c. 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/QZDA42427068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd392bbe5628b3e859920db7a38256c168e534969a8194bb48853917667c9429. 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/QZDA42427064.
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 0x930ccd202ddae328f8f079858bb29320b5cddfafbf3ea2ad4527e563c9f22284. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZDA42427065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f7dbf1f30685a752ff9b7442f7cf201e64d130b3be5b44f5ccfa6df641275e. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZDA42427067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355e39d799a332f04526e8f67e02d5075b82bb1e30234c8de89a643215546924. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZDA42427069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791163dcd28cd81c66f6523c55363c2861b1fe11d3e8113feeea1d1789f33b4f. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZDA42427070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503386d58435ee24f2ceb8748675223ccaddeed5891e289d78daf22f596ac42d. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZDA42427071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb663752843548f3058f43db82d00287908232807f3822a48909e9cfc0b509e. 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/QZK6P1957540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5a9d798407966e93ddec08a6fc3ffb37f4e90615e34b16967cc20fc80efe97. 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/QZK6P1957541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4094060b671e373ddf0860c8fe13696fed36d8dcec342c3af838e1c9b615d9. 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/QZK6P1957542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4f8658096c2c936ed2f012898b0b5ba346c92b1d8461ff4d6acc0a41d1e286. 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/QZK6P1957543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f760b93d9d27567a26dda263165be73741d97205187c9957f043a232e4dd66. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZK6P1957544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553d6912fd530b81a7642d06dbfe2f915f990badd3ed208a9e8742ede6023246. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZK6P1957545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526eb828c590c04bf82a1480152207acd38d3f4df8bf0fa7015108861ea1324b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZK6P1957546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1e8a55fbc6ad7aba31a12617c69f920d358da25c5ab014326cfeea82825f3c. 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/USLZJ1539295.
Disarticulated Space Clown - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5805a79296bf82099b2b6813e57c5e4fdf7ced9550a20de6aeb7324d07e5d806. 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/USLZJ1539294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec33fcc0a1d73c3439693b5ef2de99a934c52223c75060dcacb030b75df984c2. 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/USLZJ1539323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b6fc25c63caa9ec206a03a75a445dd320af3e600e0ef51d078cd318b2539ae. 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/USLZJ1539298.
A Duck on a Sheep Playing Violin - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c563d6464fb18813e7e4c873a48433153538c76ed0c96b131f97847ded4732b. 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/USLZJ1539297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f74418cfd2c76a66ee81370fc54e1d226ed338bc3820e6544713f9a3275ce0. 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/USLZJ1539324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7762418222051ad0193106a35479c5cdf03eb613729dd0c19333c92e81d0ad. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USLZJ1539293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbced739bea82c6277c6f8d840fee478b2e844221d3b9e57919dbe2231953ea. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USLZJ1539292.
In Between Silly and Clever - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe908407691fbc44f6967472de8e799274a3c5325db4068d44b57f33c9b96b963. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/USLZJ1539291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec103aedd8afb5180c7fcae59a90ddf794ae5a2f61bd888a09cde7a9b12c8de. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USLZJ1539322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a7e9e2d964897cffe1fe23c20aec4f69270934dcaec046cee8334ef83e5b85. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USLZJ1539296.
Fermented Orchestra (feat. Terrafractyl) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1112d8672ad6a774a99a9e10686257c07b3a3029326142362607c4a86b4eefcf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLZJ1405699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223c14d2a7563cc2541ef3ba4a00eee3afc8fd044d123876fa048726a0ae4acc. 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/USLZJ1405705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b77394cd02eb232bfc89d1819e7edaa3ed83f26db5d383d93db2e880d89627. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USLZJ1405710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c9a900d7904d1c53a9be195b297094541a664c29ae729e88f8d52d39d24450. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USLZJ1405703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9068579c89b635c4c373a1d9c228a824475dc3e03943bc7830108249e447c86e. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/USLZJ1405709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908b399b144ee97261f49b268e4ec07c612e70d44f6f1bb0fe19286d0d36628a. 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/QZHN62396594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df003d71eb55c8a1342273c95c14c7578126956abe23437800e588cf6963856. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZHN62396595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7767480c4dbca0ba81b0eb3bf74cc7beb8fe15a727f54160b5ed36a20df12377. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZHN62396596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9654a7297074cd1dadc9ae422304f594c21cdd658dfa02464586cb5a28a65c1f. 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/QZPLR2034778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b9f70bc57e9a18224dfd45afe9642cdf819e4347112c3a83861e1d8eebfe6f. 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/QZPLR2034779.
op.809.Whales Playing TicTacToe (Electrypnose rmx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4854507a373b5a9434fa6cce65ff334a55ec7b9a7c6d8dfb2a18d5829bf6649. 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/QZPLR2034781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa466847986265475a61a78732933362549f0a1dfd1d77ca612f5be2f39908c. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QZPLR2034780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc232b6ac0e53f229d95dba255ee59e3265742ec762843146229ab27ab81ea995. 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/QZFYX1922540.