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 0xaaf42bfd03c6d90526e675b7abfba65de360f37ca9382895b5ccb20054bf6636. 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/72786e36-6452-4229-a391-6bacb0d9f254.json and https://artists.proofprofile.net/proofs/artist/72786e36-6452-4229-a391-6bacb0d9f254.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 0x4945995169b97354b071571756ca4577fdd5f47c8aaf274b9cb3ab6f3fe64e0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM19601756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009ccf98d0d94b82290754528e7c0bc843fc69584160e1ed7b792d52f987cac7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM19601758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b37698ceabd4746296fa37d85242ce805c18491c5915b0cd6100611f79f181. 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/USSM19601761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7609e55ec48bad6c2e64ee2125842d4678dac0a00f64053b9fd8500584de4b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM19601764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183d977108183e1586dc5688ba2eb159fe771a452cfe031573cb3bf68c8e4c6e. 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/USSM11100229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f804acc27a432b8255e537a70fa65d5ec1a115a24adf326f006ebc6a4b5c6e6. 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/USSM11100234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df2e7259afe48817f6233d0525c26ac209e2ae5c2c12a6f799d316c9b096098. 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/USSM11100235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe283b8a362a0c0b63bafd317a49a79ec4e2d641e00e579b1878538551686f3. 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/USSM11100241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac4752cac462fe4b72d5aa3b74bc31cc846d3e0c62c38fc7e933d18aa901f00. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM11100243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043b847e029d65a9e185ebf1c8225c7821b6bd91dab67b412c0b1ee6b9e1dd21. 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/USSM11100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb047fc99c3d3c09a932ba3179dade9dee26a2f0e4b6d741622a67e7a2027a4f5. 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/USSM11100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fa3e7693f0649c6f237d5e0eca047ae8e2a22e65e5e8d5c4e36e466cbf7b81. 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/USSM11100218.
Elderly Woman Behind the Counter in a Small Town - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ec880f7f7824d6e7071837e9a2fe9857371a65a865fc07bf497d4ea56c3d65. 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/USSM11100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe001d8a6806306e76aceb87c683ad88e31372b5fa289ac36bf4b5c06d159217a. 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/USSM11100222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274426f15a1cc413ece6a78dad8d03c678595f36020b70729e498ce09575cd98. 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/USSM11100225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ea426f8a0beab3b0167f3575e3e55f4e483123774cf66bf6f0907fc35d1a6e. 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/USSM10211827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee672774f4fd82dcd1f3f3bf8eaa07a2d2f998536679deeb7ff0f64de81d8b3. 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/USSM10211828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd978cdf27cca50c0ae63684fb5ea9af595d18cbfd75fd66825847c68c25b3c. 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/USSM10211830.
rearviewmirror (greatest hits 1991-2003)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8418da98cca3b6e4dac1d00fa5bc5579a5eb4a4b276c37eaed2b16c54d56b89. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10413938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c071b98d9c3071bea79a7c7dd2284417b981e50a7c4729e92c764af78fc72f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM19100674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae041610122ee404a3707d6b40eb41ac15e0c3acc08f1443e0415955c89d9cf0. 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/USSM10805330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e774181d01d38500f45c14ed774d9056b51f5fae4bfd35abed60a48a9f39c8d. 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/USSM19703239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6970220f8711b555196ee2283d9cc790c5f477c45c27e2b3a9a79692d155fa5c. 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/USSM19703252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262f5ee069150ae5366bb3510d5c4b6251e72bad2ed4482f6527c39cb5c2fab4. 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/USSM19703243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d910e39dfde74d9502dbd40dc6723e70fa65660cd7ae0b8ec22ea7501a58fa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA320620051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a39aab953e858780e726222be677ce2298345fb21192fff052ce882f3b0329. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA320620054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22b20b93ed7abb7da33189a29715062920bf60da39a6076ee309ff2c39d8271. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA320620055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03238478fd56c432a3dc25dc085a23b7aedc06c428e70d4ed14134790a89e965. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSM19200006.