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 0xf4f74864a0e6396064306e08143bf99d587af0f13d556f7c9eb6476a51cdc480. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ae05259-90b5-47a5-8875-f6f60661e922.json and https://artists.proofprofile.net/proofs/artist/3ae05259-90b5-47a5-8875-f6f60661e922.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 0x6d4a5ab79cd13700321252e8ca22faf6ecde2abfafb7bef7d138014ede4b2501. 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/BXVR02245510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0834eda39f4b9f4959a0985ce2d371b2c57a6770b47d8fbd355e7caec606d8ef. 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/BXVR02245511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945538b6b9b1be1afeca2389ed979e0957eab80e5d938b2e1d48ec3a88b3aa17. 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/BXVR02245513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d9bbfd7fa08d84bea77dd63149d3fdd71c7f45b4f867c1aa5c30a8f796ef11. 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/BXVR02245515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf665968131c44bc3c7c067bc1a37986090500f484e0b1f7ff3edfdbcc3d8aed3. 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/BXVR02245517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784f5a1536f117eac2f30c93e3ba30cf5dd398e57ae21571689f7da5acc2bb29. 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/BXVR02245518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc441c85deae287d9df75a4d2659ed1ee224ba29c3821908bff2fc2add952d742. 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/BXVR02245514.
Sonidos del Bosque Canto de los Pájaros Ambiente del Bosque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20b538a8925b92fff504da176c2a37912b4dfc11983e511485e53555184f8d5. 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/BXVR02245519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2b8fe66fa3a5f567fb4738f834d97eac2ae9a496aad16d9e4b50c2ed6ae807. 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/BXVR02245516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45625087b8091826ddce11fc10f2efd4aa4055ec8ca6bae8a6de424f516c19fd. 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/BXVR02245512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57d97c0e6b74e00032cfd418c16017d353fe282606a98196ab9e387eea2ad48. 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/DEAR42220617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b76ed31e1e2507435cfcf039375ed038299b567c9da946e713df758dd92b1d. 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/DEAR42249225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5614ee66f08faa7dfffb9f6baebfd99c00a6d2e394b1b1c26da13fc71aa836b9. 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/DEAR42257796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf665968131c44bc3c7c067bc1a37986090500f484e0b1f7ff3edfdbcc3d8aed3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXVR02245517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0834eda39f4b9f4959a0985ce2d371b2c57a6770b47d8fbd355e7caec606d8ef. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXVR02245511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4a5ab79cd13700321252e8ca22faf6ecde2abfafb7bef7d138014ede4b2501. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BXVR02245510.