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 0x97b43bbd17743cf973ceba132efeccb27649ffd4ca7fa6702c785035c7084303. 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/96dcc1c2-98d1-4266-9344-6f283131f1c2.json and https://artists.proofprofile.net/proofs/artist/96dcc1c2-98d1-4266-9344-6f283131f1c2.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 0x25656019ec91b931173beb0154d53170d2897710969c2e236f122b00954dcabf. 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/NLC731600100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022411dab1831fa33814f0fec1072379a551e8d593b460188d208e1abaee1855. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/NLC731600099.
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 0x7680982319b6232eb7586e509081a40f94282e5fac01a4318283ac8f16db27fa. 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/NLC731600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e502193ca92aebb79d01b41c71c2e834b37b185f27a801ecfa8fa2dcf1c43e. 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/NLF711400882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cff0b75339e7783ec4142c8271e22f5661cbf8742f7314c43bacde21c0f3d8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NLF711402665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5182325c0e83a9e85db6735af65bf772d369a432f8ac21814d4a6e77426d5e1. 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/GBKQU1436709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd30663e443a48d56bbeea8be326ecad72f318438083ad458f8a3c33bba6d0e4. 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/NLC731410004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe834cd2b7b6baf6413c26c58f6012468362faed57eeb06c50c2f8bc636fd6cc0. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/NLC731410003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb700a6d2a9419f400d344165672f4d6b7e1a4245ff85b4058fc3636ecd7ef9df. 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/NLC731410007.
Let's Fall In Love - Aleksey Sladkov Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ba66568b7a80ccc3c82841e77f7a736d029901eff0740fed785eebd0714f89. 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/NLF711309719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d88d5184c7165db67d85d567387aa272f867a13f552b76d9b0036fd966806f. 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/NLF711309720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbe2c38cb08f2e1ce378089b245134ddf61fcd45c15658b9515eacdca4e6f8a. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:25:25Z), 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/NLF711309717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fb9acbdbd81b1a405c83f2f2563b1564542168b6a6e0cce9ac83f9f278dac9. 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/NLF711309718.
Let's Fall In Love - Aleksey Sladkov Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71b4a8e8a04a01befd80ff6db58fb7467302d6e36124d409d9cd0a90b6ac974. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/NLF711309721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32c6f59aab687eb76d0dc8c347d0578463bc7e2e03bdaafd80185c2c4f70471. 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/NLQ881000651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19ea4cd48e486a35c663eaaa4cc29272c844f6aa389015517c120788ed129c2. 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/NLQ881000621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050ef539266a9a25a7aa7fc2d28d6428326d3e7c4824ef3537e53e1e970421bc. 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/NLQ881000677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c1a5f0f4e3755a30d558d7e0854a1532fddb84c72579d36d4f6a81d32b7d27. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLQ881000678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383d4bfa716766c7bc5f2754e06487dbb98040e7bbedea89259ae6bd093f7136. 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/NLQ881000679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5147c1ff30b6c8e1cc6f22987cb6b48442f0456a4151b80646f0be4ccd82c78. 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/NLQ881000714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b183549dab48060fa6b4292ea8708877843bca63bf42a3343c6f2c88da50617. 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/NLQ881800125.
Right Back - Solis & Sean Truby Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec54b2a6d185bfcde379b9c725eeaf953931d7b33d8b29f11892b5889cce5f6. 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/NLQ881800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8c171281db4f563fb4311eba781c09651d3b94361c71b1b9ecdbd9a4156b86. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:35:04Z), 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/NLQ881100882.
A State Of Trance 1000 - Celebration Mix (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ad8a00407c9eba34bbc06c6a3632a95fa80a3599a56129296a39f0a51baf1. 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/NLF712100450.