Scratch Acid was an American noise rock band from Austin, Texas, formed in 1982. One of the pioneers of noise rock in the 1980s, the band is best remembered as a stepping stone for its frontman David
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 0xb099dcd71b92e44b78bb977dcd3f603ed10a6e62bb41c1d1528d840e92d3911c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ab18305-2ca9-48b8-832a-37787fe1722e.json and https://artists.proofprofile.net/proofs/artist/6ab18305-2ca9-48b8-832a-37787fe1722e.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 0xbf7aad684a7ca54b7f4c421d102f838c0bf92742e6b1b07f29a1eb25ded06da4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USTG39007606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53950717f55b6fb5f00dbc282560f39f6740cb2003207d748a0ef9493e494fa0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USTG39007607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930fc4e951090eb27c2cb9af5a2b06b1f7d4469f340ccf5ec41f10f6106b90f8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:25Z), 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/USTG39007608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc185cd297544b94648a87017347aa4ddd0e0f0084dac470215dd37514f9ffbf. 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/USTG39007609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e205df38f89bf617d42c02dddeaf1864fe17488050e441f951af53852953ccd. 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/USTG39007612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d63cbc0f16122cf3daed68664f67eb9f54c7d023782159ec304821e5914c9b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USTG39007613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e982d9271235209149fe314ac66c7c0521f90c5af4c785e5ee6e1e95d82946. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USTG39007622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803c5ef13d21d46fe37826ddf871492b4d9a679fbeec32a1aaf2b233030ca310. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USTG39007623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c49d297534177e87962fd4c67134169bed9e22717fe68c001f30818998e58b. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USTG32438401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ed85936eb366bb9601b34adeba253d7e5613fc746da5b5ccf6a794100ab8a8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USTG32438402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434c15301ddb365d1e5ef6f406d70f1b034717670e43e873c027852f1098eb46. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USTG32438202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966fb531ff6e835bd4d746cc7f39c5853aee9569bbb0103c4ec909f62621bbdc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USTG32438203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50db8eb68578a8551be1198a28369307f14d16bb8994a514959420c3066dd6f8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USTG32438205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e667e3d4ef78ade8640588b563c06a14fdd3db88528f7f30ad0454d1854151. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USTG32438207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1c9f1968cc4e056c869a11026a15578e6be7fea72dd1b99d5f8ebefee44234. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USTG32438208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f571d83c55931ad96f0f5f70d8152db3dd6fa265d5b32a2141168a1d4241de. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:26:52Z), 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/USTG32438302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba347dddccb2ed89ad1b63d30b54b10b5e17440c378e72bac1c88ddc9c136232. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USTG32438303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe103b8fc061686fa63ed01f49432c6725a4d38f66c92962504e57286eb22d4de. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:52:15Z), 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/USTG32438304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6228cee7c76d4a45975c85d72c98370dbf2d5c32474d4e17a49b8592c00349e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USTG32438305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4022b92543e969ef5a497f1e71b08afbdb585ea765cf710ba2488af826ee57. 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/USTG32438306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076ac754d5b18c599a5a4299ed5f8ccc8568320894d4a31822c9c8bef6cbce09. 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/USTG32438308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebee050dfefaa443afe8eb252fa02e38b6a23e61bc048a21a65e46a52503431e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:49Z), 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/USTG32438309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef6bf8c967660d23b3eb3fdf58d0deac2e80c46c7b004d97bf6586aee41350d. 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/USTG32438310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b819b064fe51bef20980e152a0de9367a5ee70ca749cecad762507c4502e1b. 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/USTG32438311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107ef75dba7676b5d1d25e86a6e5417d060138c8bee0cb51a140a683c8677799. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USTG32438312.
Mary Had A Little Drug Problem - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2d18079d44182dda3b957099a987d264ee3bc39dd53fe85e33ee90aa9c28cb. 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/USTG32438101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f67a3967894a8cc507290de949abfe5f2c1f2e513f7b608c451153f04eed3e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USTG32438102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bd08bf58a9b859a6622b093293150d461f598cf5f659e63b1d80470017a52b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USTG32438103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a5be723940504138291453c69ffb265ca9951b49cc22dcbdc23dd8134b96b1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USTG32438104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3403343c046b997a4b6aecce650ad8a0dd446db2b6ace5c28142a2589cf6da58. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USTG32438105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813c196bee608806073126b18756f4ce25a60745a64ad868362a7a04ba735745. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/USTG32438106.