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 0x81efca2d029dc05709a3fd4c1d03e33c10845302259de860689365439bfc44f5. 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/eecccdc1-9146-4e27-b2d1-b895007493e5.json and https://artists.proofprofile.net/proofs/artist/eecccdc1-9146-4e27-b2d1-b895007493e5.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 0xafa498ff932f90769999c6d542ba1252d420427a6236e685b14e0764880e2ea8. 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/HKG291500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776e0d5e225b55f5f767d65c21795af773f8cb3449783dec6c2f676ded29f4aa. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/HKG291500494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ace3713f75b321e9ada3c6c7f575fd3e37f8974532bc4110c574c1cfce4804. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/HKG291500495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9210874494dbc7c86eab6d3cfd7e530f13e8d5bdf86755d8ecee6317e33b0b5. 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/HKG291500497.
Guitarmaster Vol. 4: The Best Of Pilipino Folk Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cf617704003ed79574d3d2cd2378013f878586117aa2fefe3557df87e857dc. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/HKG291600954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ee8aa0fd8c23ea3da271d76e18b79c57fc97746c9a998723a39d29158e61b3. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/HKG291600955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb027eaf25c63686521c28c35fbd0426e12386cd3b3653a5213f12365268fe5e6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/HKG291600956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2c8204e03085904f82b031cc535ab2a42be25cfb429999267ff2e987476c69. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/HKG291600959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c52947bd5d998c613359467deccdba77185f29dad33bb37d3a672b0e4ca2b2. 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/HKG291600960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55feea916159469ddca6f9e1f5be347ad6481ebcd36e30bf811ea97a97927e5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/HKG291600964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac98027cc5647df1049d7909e90136e913111e21447981406bc2bf236954f367. 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/HKG291600968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a44206064d5ae3d3b6585e76017f0452c80290fd9a078d62b519aee1cc35868. 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/HKG291500523.
Man Smart, Woman Smarter / Day-O / Jamaica Farewell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f97d9ada4fbaa663500706e6fbc7be7bcc3b709351f4d912e9f1452c9b1da89. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/HKG291500524.
Never On Sunday / Moonlight Bay / Lessons In Love
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9325b1281eb48dbb3e69a35aaf900d99544c5f3bf8521a6084f6dc532c6294af. 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/HKG291500525.
Let's Twist Again / The Twist / Peppermint Twist / Let's Twist Again
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e13f72b72add7905b5c693af99a20420c9cbc8d54eac1362e03e2e4ceeff10e. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/HKG291500527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65025e53282b0d9f77f4d89ee5d32529d2f77a37ef77a15702b5efae8142535. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/HKG291500528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee3a5460c46baa139e99705cadbe93aa19fa45484455e9db4b4740d4134ae75. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/HKG291500529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5e5339e796152294cacc44899a7303c587782498215d233ff32e8d46a7e646. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/HKG291500530.
My Hometown / Innamorata / Black Magic Woman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33796a7a3effdc5ef0fd8cd70441487a446542316f53feb5d6baeae035a77519. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/HKG291500531.
If I Had A Hammer / Let's Dance / Speedy Gonzales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839fbbe49175a91e54ec57447c6926a906e57790dabd39c6037815dfd8ee8400. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/HKG291500533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861b7ea743bdc7f9d8174c4f116a13bc74c0c38dd964bb90cd47f57b2f9f9b58. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/HKG291500536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2f6e7a036b38ed3cc80c595771e58ec6bdc9c58fab7daed0d2bab64c102360. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/HKG291500537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238d55be96e32cdb96416829beba7a80e7ee91af63b2defc67281c8c7f31c7b7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/HKG291500539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76951b1a69f6495bed621f4730eac57ef82a20d0cb3d0cdcb795ab379d521a8. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/HKG291500546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35640c203bfff7f8d5b9b9b0e78ed6d1e17414a0dc5b84f90416ed4f4098e71e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/HKG291500547.
Someday / Let Me Be With You / You Are Always In My Heart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad11c8b58df0999c0efbf76f6ef6d95c03cff122ce3ee4952e5518a23c6afb9e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/HKG291600970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57129905bf08e6aaefd97b99db5fd52a3aa4223475b4f707aede5e887094bb49. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/HKG291600976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00169d5b1a919d56d9aa2cbc1d343e76b9119ce44b8d1726ea8cd4501e5478e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HKG291600979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bb4499d654a28a6e7754c4320acade3daa593335fb28dd6a17746d3e57501a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/HKG291600980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd326609049757ac547e0a136663a6afed125509824acc5ee46e065fae183d8a7. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/HKG291600981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948a6e3866376dcec6e4941147d2cb8c4fb4c13c093ba4e0919b1a0daa0e2f06. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/HKG291500520.