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 0x743a34f05785802d4801137454eba454707546e3d0175fb1a9535478a3f8d76d. 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/75879705-0acf-4238-97dc-cb159b9b9b1a.json and https://artists.proofprofile.net/proofs/artist/75879705-0acf-4238-97dc-cb159b9b9b1a.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 0x5e95bb01ec1c4d4d596b63fb4c9db021ed7bdaea7c0fb74ed772a147d1fffbf0. 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/US92U1614801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb95fcef06c755f7f8c90a9f957b317ebe7b5c75a8a6166b27fe71888c316484. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USLD91714868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7630c4c56a05928129104c456e6769ca0e41017116cd8e3f1bb017e5da893e69. 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/USLD91718607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc99d3a2eda1324fea173ebe893eb45a4e72ce9b8038b82f917ad64f9044364. 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/USLD91719223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38108342290b5296912edae2f54eac19a238b8a0a28ba29e0e67dca028b5e36. 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/USLD91719229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5a7fbc16c724b3961bb663bca6a095af836d28a61a300d3254ae7aaa86b9e1. 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/USLD91721517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344b4d6ee2893b911198e6d160e737a3ef4de554cd4c36689a60be1b19cb1490. 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/USLD91721923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f86faf48cf3ac2c02371946065d90cc5421fb6d58bed3eb6cd79da75e36035. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/USLD91722781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661edc2d6ae9db6c941c4ef55b2e1c699fb5b27b7a96b15e04fbf75177dd3c4f. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/USLD91723127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440b9336725caec1d0b7923374dfefad281cccf997d71245b1a72f2c612a9f63. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZES92098416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8aaadc65dc657d78015b2599d60ccc02d1c6d367b3a6daddbc457e6ca53f51. 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/QZK6Q2132280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28cf5b0b4ea8e2ea2b3d5ba3cd5e16f73b426e29986d0ffeb92be92d831d2ec. 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/QZAKB2153876.
Crazy Rich Asians (CRA 2.0) [feat. Dok2, Eric Reprid, Paul Blanco, and Parlay Pass]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcdbc92f554c6e9e5faa658f1850f09888f774665f49b42c0d9757874f042a9. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ZZOPM2230759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43da2a3d13865d803a4fda1d338760e02d37d4f81c1f1c6eb259720e136774f0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZZOPM2236236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ea4dc9848344ef11e80cc9d904ca944b2426d028b5dd711d21218591aff97b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZ9452300545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd814ad3c84fb00d1957b7d326d78b2f9d484a7872423498cce6b7b4335ded003. 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/QZHN62478354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd814ad3c84fb00d1957b7d326d78b2f9d484a7872423498cce6b7b4335ded003. 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/QZHN62478354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84861a4088dd07bc5608c5f8deb0448ffa026b9e1d80625a46f633afe65bb9ea. 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/QZFYY2434088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1a17c913a96540f993a3897b726631b270950303f54c2e32d7ead41914fba3. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZHNC2424936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016de07d6efcf832a1198a12ad20318ce289bea016aa4dbc26db8bfdc456377b. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZK6K2485394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad25e47cf67a02eaecc688644748dc423fc866ab392527373c8783d86fd825c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMBZ92413569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd74b9d553e215b7dc7d792d410f205a5e1c3e0f094a125c91fd052028a680d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GXD7V2301104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd97baa82daa7aea72e47277a39e89579d436706b15fa947e71a9cb54913036. 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/QZZ7K2405756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230160d1f23e5533f9055aebd59881db45a97f88114a2a7bcc69bb5b3c318194. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFQ2513845.
Hold Me Down (From Butterfly soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36a5eab4c3adc3dfdc2a9b80322e4c962d39f9fd459207525a0dd9397c4e98c. 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/KRF152000063.
Stutter (Feat. Ted Park) (Prod. by GroovyRoom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e303669fa761b22d7c5eaf79166f55e1da4c815b600a7c13ca44990181e8e61. 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/KRC711900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99add146c898debdf166c76d357d496b6dc42f2b3cfed3401df1e8298d23e63f. 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/KRF152000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e727493cffd9fc6d176a9185b11a9ac4741cc4cfa60b62bc47ddbf5b93ee68. 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/QZTAX2227219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0431aed340d33c903558233f3f9d3776bd5834d78dd229def29adb306fc5c3c. 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/ITB002200854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60336dcf7574c141ba4e47c094d34112a4437a58e425ebf9e7106fd812feb043. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QZMER2225433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60336dcf7574c141ba4e47c094d34112a4437a58e425ebf9e7106fd812feb043. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZMER2225433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc0e63bc071de84f8d0cbb7e318c07f5801eb8b2a99cd50935efd7d3b83b3b1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZHN32397017.