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 0xe7dd3aa749ac9e9766e49a5772f5acbf55455241c42e84a7565f9f9cbca49ae7. 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/6ed6a047-014b-4334-b74b-7f366ae9aae2.json and https://artists.proofprofile.net/proofs/artist/6ed6a047-014b-4334-b74b-7f366ae9aae2.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 0x9617eaf80894daa0d66beff2bfd527ab2d3a6a9559611acc7e0f8e07cf1952b0. 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/DKRS42202507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb323a79257c12f9a65b0b3e0bd96636995d731bd3109295f1c50108a84c6240e. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QM6P42347688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a83dcba4a0e1d1a7a9dda09d2e552d2372f633f6b7526ecbf882e22bdd7f20. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMEN2326175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c15f0f812497f52dd55ba2d8c1f73bff79ca23e8d43e19c25876c1fedc19d5. 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/QM3DF2203810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f6205870b7a190261bbcc80772f515c842c0db584302aeb0426c68141b0413. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QMBZ92376464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fcb93781129b2c738db4e2482a5858748dcb34a7dadb60b521ced85e96db4a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:35:59Z), 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/QZPLS2359083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1d4ee7ef88a92b925193b38eda4f16313f629cb1f4c30ac2cb0cc009bfc384. 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/QZTB32382588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040e630ba2a0e0425ba63b055ccae20ba05660f12978c468dc37aa695a4efc47. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UKZGC2308397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d01cb67e467513065f2d06f5d20df11fd5867445f0c3be40cb2de9d6cec412. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMANG2235826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2311d8aa4ce8d55659a47437a2272a9fc8d8fc0749e25dc5d8887ffbe67c9455. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US3DF2409524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0833ae85c8a8ead8272b8568738583e9ca4a56030d513bf5fc1bccb5b5e30020. 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/ATUM72400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cbce87fb486adfc2542c8fd2f5385cd944a72415d1f406670e4be97cd7677e. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/US3DF2506730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763e42f0354c9a0aa4ccc90613de74e6895ffa2537abd3f846f270edfffee479. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:24Z), 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/US3DF2506741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd61071b4163f1842e4919e7a95fe2bead58d947c71c7368e86bc32b843e0547. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX3HH2500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4707f9a4d1b1bc0aef6098433450c608db0f1ff14c064da0c897adddb889a7ce. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USANG2518131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44cb25854c3f93b7ab9168491de5f1fb3d6d5c0e86db72f7d75f5e3a4fe596c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USANG2518347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82906d3e7e6f464d98ee655e860ec970f8778072baf55dce556e8784c5b49166. 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/US3DF2440881.
Leveza Records: 1 Year of Spreading Lightness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327afdeeb347277cd7451e740aa0a92f4f353b903f2532df100560d4cef0573d. 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/US3DF2520387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc2f0b6f3b708f74d08df4316f88432e74eff1422333711467ec1f3e972b0eb. 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/NL1LE2303376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bfebed89daaab3558a5e302fe3c8805823da3b1496413a57971d5f299ef92b. 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/US3DF2567592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afa9934b97eddd54c2a0e09e180fcb01d7d6b9d9c5041f62dc58ed58af6f71b. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/US3DF2568815.
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