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 0x7b4d11d864c48179fb3a87a882d58a5a43e425d998159288e851d221d20d65a9. 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/ba86ea0f-22c4-495c-b388-7195984d322f.json and https://artists.proofprofile.net/proofs/artist/ba86ea0f-22c4-495c-b388-7195984d322f.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 0x70bf3d9c5d88f88c9b2fcb485867cf67de2fddcda7c6f9f2e355cfb69577c861. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES5109200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39aa042a1ea18f21441397ad759d83c65772741aeeab72dacec6512445831a7. 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/ES5109200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689712cac9ccd6dccad9aae557716e1aadf3a4892b383155bff88a4955c4a327. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES5109200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01810d5050b70231f0a8a86863d9509c12cfbfcaca7d8d1ba938767424e4d0e. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/ES5109400313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09e4bdaea98a5aa5591037f783f3558b70f6f3df6e09b861394909938fb9f20. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:47:25Z), 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/ES5109400314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ea55b59338dc2415f9ee15661896ef9ae2e17d74ced2e16559094e2d879f1c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ES5100100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca67f9ca8bbe87b614d24a5ccbde59ed5424da1eaa85fa5136e1aa930e5ac056. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:54:40Z), 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/ES5100100106.
Seres Urbanos Hasta Que Aguante el Corazón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47833c024838f3323dda2c0163bd516a20c788f84b96a9d018f695bd9cd861f2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:42:07Z), 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/QZNW72305565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900cf8a2785a218eda8df45139855d57f308b003db80f1d63e7d18f3217a70bf. 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/ES5022000834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2263b086ee3fd5b5e7ed70c3de091103b3fcae54205e7e68c909bb746857ad52. 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/ES5100100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2263b086ee3fd5b5e7ed70c3de091103b3fcae54205e7e68c909bb746857ad52. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES5100100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5a62f000105bc4a833cfaae3c15463114db6cf90ac6a57b717cba8c1ce15c2. 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/ES5100100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5a62f000105bc4a833cfaae3c15463114db6cf90ac6a57b717cba8c1ce15c2. 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/ES5100100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900cf8a2785a218eda8df45139855d57f308b003db80f1d63e7d18f3217a70bf. 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/ES5022000834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2263b086ee3fd5b5e7ed70c3de091103b3fcae54205e7e68c909bb746857ad52. 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/ES5100100102.