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 0x3fa741f5b394a918d2d5643376c9c457080720683985a31708d8ff263e6bee78. 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/547cc0a6-2495-4da6-a519-9c5c070cd193.json and https://artists.proofprofile.net/proofs/artist/547cc0a6-2495-4da6-a519-9c5c070cd193.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 0x48e671aa3d6a2283514e8b7d84057dbcfe8585022625afc2863108f32c4811d3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCJPI1966341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afea4cdf31c6bd3eb84860e67de48ab1d7576b4fb97ca3b530db1adc3018f2b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:03:21Z), 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/TCJPJ1990501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a5e3b80123afff21ce1a743eb2e6286f1c1b6632c15adfdc6005d45e5a2566. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPK2055984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee469b872df66de7d96b5bdeaba276b538a538f15fa42e863ae83b0eb848fea. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPK2083865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc428823f8f79ba321ddaf539c2534890ce997406b705ea060f0840d76b55e0f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPN2020678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374cf068ceecf1d21092b30a17248ae5ead7cbafeaa1a9564d080344cdcd20b7. 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/TCJPO2187224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30538cc5c31566113a90ce4a6c50cde39b1f34cd632a8547098a6e61015ca785. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPO2187350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afdc214b7114db78a4980c295f615be3215ed442cdf3c40ec00ed0de6f46550. 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/TCJPQ2135779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599ee7d0c8aa8ff628fc3bf8ee5c3c9d713dfe4c01ed810390d2992f0a376531. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCJPS2249428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983b9848f8d5270a3bdd6981c49fa4ca541d23de8a7917226706ddffcc20a92b. 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/TCJPT2204297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe9672e051530a91a0df5335211b0f4921e6baae8564e0fbf6183fc64347668. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPU2332201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491295fe1147e8dd7345c4fbaf5ddd46613f215320bffdf59ca724e1526d0b52. 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/QZTVM2328624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff08792e0275083afb76ba6186e7bef3338a203b0fdcce2f4225a79dd4bea94. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:20:49Z), 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/TCJPY2354296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f0e5f3eb69e57c4d815d0a334805fcbbaf5d9de3dc89a2bbb6bade0320afde. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/TCJPA2452494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b80da43fb6f2b826963bf5b42959003b37a731f0205f8c7c8753ddd65218ec. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPA2452496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809d1cd31e1fa33dfaa1bdaa0457083210647bf2f3f8e6a55192a2869cb352ff. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCJPA2452501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d0f63c8d549cc74cc47317f6b8b40884797b4484b1ed6d28086c8ea550c8e4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCJPA2452504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc344c829b3d04e9837ce4fe752e2d554daa7fc0006f8d91a559c7d67212f1c20. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:47:38Z), 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/TCJPA2452510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ce82be1ebf1916146f9b32bed397bacebe10b7803a67aa931db8c0f1e30e8e. 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/TCJPA2452507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfced8adbf1106848918083871b589380e1be95dde563eed3a44ac0b75922ff. 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/TCJPA2452513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631cc335f6e092f4f6eb9ae5d9d9b33c1ee8ed686492127c1d6189a96cf8651c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:03:05Z), 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/TCJPA2452515.
オソレナイデ～ nuh afraid～ (feat. Ariwa, Jr.Santa & U the Starr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5c04e342d3125de1d4ca03ba7345564f6f541c6eba40b9661400eea8c57d82. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:13Z), 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/TCJPA2452493.
Kingston Tokyo (feat. Young Dalu & ZENDAMAN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf584348111d0613b60513eb76887bca44d0017e66a7423bce639f63d5c803ed7. 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/TCJPN2021898.
HINOMARU REVIVAL (feat. CHEHON, VIGORMAN, NATURAL WEAPON, RUEED, ZENDAMAN, POWER WAVE, RAY, KOTOBUKIKUN, APOLLO, CORN HEAD, RYO the SKYWALKER & JUMBO MAATCH)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b682f159ee9fd8d493e04a61b3768c305a35b0bdc01ce824123a81b2eba9c4. 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/TCJPA2458503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87978e0a86f56e90ab621ffef0ff6453f5be94f489e67221c4e39bc5a95de675. 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/JP92J2401864.
RUB A DUB SCHOOL ~CRUISE SESSIONS~ (feat. J-REXXX, RUEED, PUSHIM, CHOZEN LEE, PAPA-B, JUMBO MAATCH, CHEHON, NASU, VOICE MAGICIAN, ZENDAMAN, 39MAN, CORN BREAD & ZION)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fdbe94fbec2b1f0856097813c951cfe24b0556a4f8a85a9a9ff97675d2982b. 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/TCJPW2389346.
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