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 0x2eb7ecdb677917d4b13bbec3568bd3bc296ccdd651139dcedd2d3d3bac530af0. 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/9d1d2651-4d37-4d5d-befb-0cb33eb29bcc.json and https://artists.proofprofile.net/proofs/artist/9d1d2651-4d37-4d5d-befb-0cb33eb29bcc.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 0xbb30a24b91d100d92a7595eba8e87b7d68f961424023d6d1aff447afe8e19379. 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/TCAHO2330767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6c7ea8f81ce81ddbb6e2a8a152cc1092521feea168b771648d1fbf66dd2aa3. 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/TCAHO2395520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a636087c23c922e6d40390818f521d2bd8b43e5b8734fea81475cc14342f03. 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/TCAGT2316631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2b1cd7af45106b7b87721801bc75083ddaf62198fd386af4aa7a17128ab464. 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/TCAGZ2381896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53264d7c6f4271e9ac0e7ebfb7cfdd7f57c07121f3c14d000eff5646ddcfdb99. 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/TCAGT2316588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be70f77c858b9d29ef58dfc941b05b2d2a61de38818a9a8c114ccc3b107a66d. 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/TCAGT2347822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3967487dcce8bafdfebcec0af3476d75885e7b35bbadc45be1d6873f206e0399. 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/TCAGW2338114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a636087c23c922e6d40390818f521d2bd8b43e5b8734fea81475cc14342f03. 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/TCAGT2316631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0468f0578dde946ea3e8053cb2f77902459c003ec0fba058d46b61d515873fa7. 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/TCAGT2316598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef2e6e546698f209657e104e81ca837344f047bd3bf477cd4b7539e3563dfab. 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/TCAGW2338120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47db7b45af4ecc8ce885307d0eb173895a20d3b546c35a66d7def0c07ec4be52. 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/TCACN1685839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6833442f5069b6474089827b4ebb43e6f5d48d5c4060aba02896d93bb78b16f. 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/TCACN1685844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18435f6324760969e426ddf4f6f84f4df4854cc783fbc65653f6457291ff7241. 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/TCACN1685851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf625e6b2ce2ce1ac8b58032838d94ad0369a095baf008e092c421449efe0ad2. 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/TCACN1685853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ef2ef4cbe5d9b1016d92f22458f98abd54123134528cd79d887b2db0cbf63b. 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/TCACN1685855.
Lightly Tread / Many Colors (Ambient Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa797f0f4ee91b1b1fb2c2bf613edecf4ae98423a971c5ad01052c808bae423d4. 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/TCAGE2293804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4382516229f157ba50d322021f69ece654efe264ba6ef33ebbb9d624d98d573d. 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/CH6542124096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d3936d91ecfc1523737d48b427e8a7ddc73a834373ab8f48add8d4e14d760f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6542093323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eded5bb3ba6473579509839a346a350a007ab9bccc3b6c54f4a83d913dcec1d. 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/USCGJ2138891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3680a2a4bf612c119fc2f85d298e384a8ac89e222f32de2f14a717fcb3ec66. 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/USCGJ2138896.