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 0x4137097adc76631bc845a0f1737763f4f841066de3bb87d4e6f5508affbde421. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1e6e0a2-f91f-4a82-a3e4-3f3380a6b2bb.json and https://artists.proofprofile.net/proofs/artist/d1e6e0a2-f91f-4a82-a3e4-3f3380a6b2bb.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 0xa4b11145db9981f83771386f4763a40371d78c286afab4134e32d554f18b426f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/TR0151000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb793474c8d27f386051f9dba862973c94a9bc50fa4934b77484fd0113f6fefc4. 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/TR0331610496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c59279a9874a711e036f777191d728749cc37dc620cd96dd3e23af89c9debd. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:46:37Z), 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/USA2P2145806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fbfba11f9ea7b41fbe33618a7a770c90731c4ce353a8515c04d65e6522d429. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:44:11Z), 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/USA2P2146093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe33be3f0e11c28db34555e4fc6580cd3afacaf7a44b616af70884f1f11b30e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TRBSU2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fbd2e0bfb1a9d531d4dd39e956ed7cd55a1a8c32ba26d776bd63c5a99f9491. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:28:25Z), 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/USA2P2145807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fbd2e0bfb1a9d531d4dd39e956ed7cd55a1a8c32ba26d776bd63c5a99f9491. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA2P2145807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17dd17a2fc33a3a9c1e0a45167c626ca9ae882bf8bbf5f004a5c81b2e2d83f2. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USA2P2146102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7c4b8c2fd2c07a05caf19e768ec335683b61d7211c2357de0edf0e48674302. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:18:53Z), 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/USA2P2146104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17dd17a2fc33a3a9c1e0a45167c626ca9ae882bf8bbf5f004a5c81b2e2d83f2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:57Z), 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/USA2P2146102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f12b171f137ebdae2a7111c24e5bb32801b570a9b533e9d04b34f79f1c208a4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USA2P2146097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0462cad84b8bba6fcb1a10a264fb951733462e0aba8418e60d4052a2665581d5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USA2P2145937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8b9c351773cdf338852c1a5ec4797c81d576301d7c09bbd382c05ade4974e2. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:25:19Z), 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/USA2P2145938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c70e5b23982f2359a615358e05c428bdc50bc38777f884a1d99acd515ac6a07. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/USA2P2209644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d361dd814017bd43c827da11507bb79968536f813564b1a1657696f196c4ee. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T09:06:16Z), 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/USA2P2209645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c70e5b23982f2359a615358e05c428bdc50bc38777f884a1d99acd515ac6a07. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:02:20Z), 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/USA2P2209644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d361dd814017bd43c827da11507bb79968536f813564b1a1657696f196c4ee. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USA2P2209645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e77ea2053989501df4a26641dd14cd12e7e1e852fb2f6f27dfbd5eaa8cc793. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USA2P2339516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa958afa5ecc35812ccfb4d974e86ba7682cb2c01b0fffe914a617b6242f2fd90. 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/USA2P2356422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b575d1196c5560b73f99b6f71546af927f1b05e2f47e08b8ee787ed02cc62f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USA2P2417189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b575d1196c5560b73f99b6f71546af927f1b05e2f47e08b8ee787ed02cc62f. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USA2P2417189.
Akustikhane Across: Cem Yıldız x Eylem Pelit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3f6e0e6b3a7be753183e2dfb6a7e771144c19e7431c036b4dd54ec75f99266. 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/BE6F51900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc178a9dc29ae165a57e1b85d5cafda2c54db4ec159e15ef83adb818d46d5c32b. 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/TRA170700534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41646e2e8a43314aee714b7db58aa0e145b8423d382b1b0e4765699c818cf274. 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/BE6F52200520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb9e7b6767bc0c996189328106e38950d8c005541a9553681d83bed965b2ac8. 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/BE6F51601160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb793474c8d27f386051f9dba862973c94a9bc50fa4934b77484fd0113f6fefc4. 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/TR0331610496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19493909542921494a502873f7a6641fe1084cb8487de607fee2c064c8f501. 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/NLM971900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817dc1b1b3c05f9d747d9d06414993944eb4dbd32cbd9e1cf662ac30df354866. 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/NLM971900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bb83a68a2385a078f6b138d89b61a5ca4bfed2f48269d0059c8fed73917a98. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZPJ32165874.
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