The Samples is an American rock band formed in Boulder, Colorado in 1987. The band's name came from the members' early sustenance on food samples from the local grocery store. The music has been des
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 0xd375830ea7c37fe4eb6b84b34831fc78fb7443670843c742c7abb2bc6815ff32. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2236bb03-7175-45cb-8541-dbc89931495b.json and https://artists.proofprofile.net/proofs/artist/2236bb03-7175-45cb-8541-dbc89931495b.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 0x2cc8da7fdef287ef8488c3447840c86da4dd83ee5ff8c800794d7656fff1a250. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBBLY0606635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a06204dac857f07d10e378b2b1be8758c1a2d8fd6e80f8032eca128021c8cfe. 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/GBBLY8200309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deff4c10c991fd557fb62f427bf3fb1915e021ef826b0d5a712632a36243897. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBLY7800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc740a33ca9556826ef6d7004490e21b654125270ef603b50e4c4527a480106. 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/GBBLY8200239.
Nothing But The Truth (Speak Truth To Power Bonus Tracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cadf8ac19c6c41c6c0cde0260d7e5b6540510735df407ebfbac959661825eb. 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/QZWFX2432405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f114f8ea7c35e67007fda706928e60714c88aa374bb0471d397122954430214. 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/QZWFX2432411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc568f152f1abf9545010d877e74135ffc06b81f84c397ba8c36522947c09a314. 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/QZWFX2432412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707dba9dfaa5bf9c8d396d238909b587341b3086b394afe099e9e60147262823. 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/QZWFX2432414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6cabcafa03fbaba9678f77bce586fcd07ab9a165eea10a7a2bd8676cccbba7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFX2432417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319cc4ba0dc9d173bd88991564b9833e3b7760276c84571dc64ae8bc7298a750. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZWFX2432406.
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 0x18c97b1c67eb2cb2b32e15d5c827fdd0172a31b36474141d511551b72b014442. 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/QZWFX2432407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e32e08c96e5c28c12665c17d26a6700b14adc1245312f29c5bbff93017825c. 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/QZWFX2432408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e996b8d05f266e989fad11c11e7d67838865f770f20c9ab3076658d3f0e8cc. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZWFX2432409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791a2a893f782c78fff7e474486d46422206da4e7bbde2639ba0a8516f978d01. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZWFX2432413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809f30a45d5fdbaf60a7ae5b249d24772b15269da9d5629a5184f72d22c05b43. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZWFX2432415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11f08b41cc2004bffbaa21b378301e23c8d9dca8338dee80464901abb0ff7f3. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZWFX2432416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d85bd13a18c72ae764c2db7beb9f070193a02398b2a670bc168d765b95a73e. 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/QZNWS2194246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469f75975168d99c01a6b9969ed04b8fa26aa950385157c16b0b3aa3a6262452. 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/GBBLY8200530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774ee21791201f5c3afbc26a602e6f4f61c0b66f92892f1d19abb4adc7a9a650. 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/GBBLY8200330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965e043d626c1931894ebc4b6407f0244dc5043e1518c2305d3f29625677cb4f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBBLY8200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d80c9fbb7cd59307722ecbae546ae8d2101e8f4fb1fb1b5670bf90e248d7add. 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/GBBLY8200521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5bd7af2be594f775e3f142ddb719e68ce9436243af5e11f34b94c52acc169a. 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/GBBLY1708854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf0a41c23be82f84b4fc8b7a441e363049e2c0a3f37021c8d071ce7f0f297e3. 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/GBBLY1708860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656f6a140b5e7844be9f5950f1b30e1af868268baf218d9303d394064bcade30. 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/GBBLY1708861.