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 0xdb078f816926667917f65a608e20b2c78a2ae73e92d53ae88cbc15a6d8ee4704. 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/a5d8eec5-59ff-455f-958b-ff88c30675cc.json and https://artists.proofprofile.net/proofs/artist/a5d8eec5-59ff-455f-958b-ff88c30675cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Very Best of Arthur Smith: Guitar Boogie, Pt. I
Top 50 Classics - The Very Best of Arthur Smith
Les années Rock'n'Roll : Arthur Smith, Vol. 1
Anthology: The Guitar Boogie Legend (Remastered)
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 0x1e04cd095830e569847f42afbfb2165e8dba8f123652e44602346ae8d5eb74f2. 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/USEWC2455001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a708a3a8ec701002dbb66ba15e01be5e92c78e881bf9b2fd249307015d271d8. 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/USEWC2455004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f04c1351bf190dff47ada1dee226da745f7f36a18443b7b9c461b8fc41a5da9. 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/USEWC2455006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda04fe949d323e5dbea865626d9e8eed83eb90b3800bcc37b45018d227662b29. 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/USEWC2455008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b72a743b6e3aa1127f919a67d07526ba7acd2046408e2637f75c465f22e09c. 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/USEWC2455009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a30ef8d5d9fc5f8dc515a0c27020ce023c1bc17c0966507684466dd9fd8a8a. 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/USEWC2455010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce825d2105efe0638095529e46799cb4f78bd46596f14709873428aa7cac8bf. 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/USEWC2455011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fccf6de9a18d50e08126ade0dd8c5c19094c39829081c7091d2e5f76ef6768. 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/USEWC2455002.
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 0xd10e30d3242e13cf5601c35d64cfdd9da668f71ea6bfad0936632c42a45b93bc. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USEWC2455003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07541f41901e8cd0b6997643fa01dd9ae28507d3c44c236d1e8b3634125c206. 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/USEWC2455005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae38908a5529dfc15c17fcf962b7919e217d09b1057551287c2765da4a4eb3c7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USEWC2455007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8cd3d1ec7f6e528cb444485ab803c9b199858e6a596b839008d8a6b054281b. 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/USEWC2455012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f249e19a4520c329ff84865191ca5d22ce17237ff000c78232965822703401. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USEWC0773747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94eff6f545cbe6f12fd95cf0b19feedaa2f5211f83d702e6e49e3bcb4c75014e. 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/USEWC0773839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d208fdbf5dce0c7a1ec22fd03121378ab4652e23d3a2c9c0003d4deb6a7e51. 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/USEWC0775316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b140256aaa28134b8f10f9a6a68d0b3741d23c2932b134b60df9d37d2807c3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USEWC1185143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c795ce8e7be0ba7bf5e033dab868bfd5ddc9b1e17defa861337fae8ee828d0. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USEWC0773784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa0e571419d45904ca277c437e9c55be00dd3ca65f85a1bec2ec18c7712df63. 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/USEWC0773295.