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 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 0x72dab2874c8822fa27778d1d9b8e4f10283782de39a2463b0e466c7ecc32793c. 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/6ad99520-b0e2-4c1b-88c5-32754d60529a.json and https://artists.proofprofile.net/proofs/artist/6ad99520-b0e2-4c1b-88c5-32754d60529a.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 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 0xfb5ecebbaa7e04a92a2a03859df3952f6a26cb1f6322361fd15a22475523d1ea. 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/JPJ931700128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1a979809b62ad39db51b32c1f942820a0f709b46c05d6ea8b7a33a725566a1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPJ931700131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08cb86e29d3fcdd9f405a8b8912228059ca310a2660b232984f5c7cab85e361. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPJ931700132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c4cf84eb3be43732d762f3482e7ae357e3aaff121a704dc9d7ef49ff54ce8c. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPJ931700133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f86cac62efdb7f6c98b8c2c5efc2b8df1e3348726a67b56467bb5408aa1040c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPJ931700134.
ワンルーム・オール・ザット・ジャズ - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1729f5faf36d9d804f080acef808693e3f34422fdb970f30e2c579509551fa62. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPJ931700137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c1b068c0a1a31844566eefb6184d7917c32320d560645fdb46f3f811fb48d0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPJ931700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d172228dfcd9464780c5d83fca99d6db9a5de1e1f3d5629babd66dfe477fa5. 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/JPJ931700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6dea2be14de08d0471f8495262a1bb7ba9c3c3fd804a4df8e421f7f37fd23f. 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/JPJ931700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1a979809b62ad39db51b32c1f942820a0f709b46c05d6ea8b7a33a725566a1. 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/JPJ931700131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f86cac62efdb7f6c98b8c2c5efc2b8df1e3348726a67b56467bb5408aa1040c. 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/JPJ931700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f4f2f28d90f0ecbbcb83634646fd1117a5bd121637ce68776df6228e10da74. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPJ931700135.
ワンルーム・オール・ザット・ジャズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1729f5faf36d9d804f080acef808693e3f34422fdb970f30e2c579509551fa62. 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/JPJ931700137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c1b068c0a1a31844566eefb6184d7917c32320d560645fdb46f3f811fb48d0. 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/JPJ931700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c68df40c9f57b021b2913d59562a7baeb9cfaccaadf9410b454254ed3b04808. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPJ931700138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d172228dfcd9464780c5d83fca99d6db9a5de1e1f3d5629babd66dfe477fa5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPJ931700140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c1b068c0a1a31844566eefb6184d7917c32320d560645fdb46f3f811fb48d0. 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/JPJ931700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6dea2be14de08d0471f8495262a1bb7ba9c3c3fd804a4df8e421f7f37fd23f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPJ931700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f86cac62efdb7f6c98b8c2c5efc2b8df1e3348726a67b56467bb5408aa1040c. 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/JPJ931700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b7cbb31786ebd3966a2d3b1fa9a463f2adde0c2d7af63391cedaa0ad37509d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KSA012185534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a5fd5e7742fa30d9b983d188c48913555945a1491f511331b98a3f7b6ba56b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/KSA012241037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a5fd5e7742fa30d9b983d188c48913555945a1491f511331b98a3f7b6ba56b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/KSA012241037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d6953dff376e70fc5dc8001f11bdd7fc1282d036746e179a3400d56f016a94. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPPO02400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb80a18ed7549dca22cda851bab169738415f39d7a312256c6254df0363f281. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/ZZA0P2407402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46054b9faf2b8b82fd01e946c0e7e6e304e25c74becbac0073d558346522057b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM6P42506641.
Epic Seven Original Soundtrack ‘The Starborn’
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147699867892385c8e9a38e876a457cb75c56acfdbdee6aca1214bd62e9ce5e7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/KRB472502092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28169312f30b7be62e9d5613cae0d7e12b67cb7d09d7a6cb13baaba33de3ef4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPPO02201832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecaf6fb3a269b5d7bb43dfbda35a8514d9667a23a96c4cc94c0e52234c2e21b3. 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/JPPO02202739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0615efd1550001147beafeaee4f4e79b3ead6caab93a3a10ca38fc0afde3813b. 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/JPPO02201837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a11ea1e2c7b841cf0f775dedf22d02e5fca51f8ee85382bcb3eac030e25b4e5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPPO02105385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b77a2f2bc8e13beaa6e57425c799b97b30c363a80fe95055c8bb24785f0c44. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPPO02203907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680198530fd9c219f7ac5abb77bde06d87ebfdc38276b01927cc34b030790107. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPJ931800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d77ece77d159e650bed9e219ff23e5a16cc5b95b5ea414627b1003fc779c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPZ922109229.