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 0xafcec082a7ba031fd05fc9b87aaf9921c30e4bfa304b166562ba88b42f8f1ffd. 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/a5f721f9-eba2-4929-a150-1fc42fc19ac9.json and https://artists.proofprofile.net/proofs/artist/a5f721f9-eba2-4929-a150-1fc42fc19ac9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Llegó Como Llega Siempre y Sevilla lo Esperaba...
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 0x41149e4704becde14368d3ce4323980e45d86b9b52b38c5d975cbd6197e3d354. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5352205638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e26703e24a98b83f3ec6d03b2d676dc477c2ba6c153555118b6b9fea63f0993. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/ES5352205691.
XX Aniversario Agrupación Musical Virgen de los Reyes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502c68c71c0afbe3e4f349e3f6b799e0beaf8ddb790e5bc7ee0b9c91d477231e. 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/ES5352205698.
Las 30 Marchas de Oro de La Agrupación Musical Virgen de Los Reyes (Sevilla)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72877ca7ab7fc30f03ae5a222da8f9e360ba29c63d35b1ef7e7e09f040b79815. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5301040204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ea0794a0f0bee611670ad5c027243c4d8d2c698f5aabcde110e088a3db110f. 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/ES5301040205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f279913372e3476f780627ad15356c7a7f5eb7ac8d49f5e0391764e52833dc. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/ES5301040208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dcfe5ab80e7ebf5193d8fd15978230a2968400b80fa69177da16e72dd400d8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ES5301040196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02475abda639169881bdabc7242b812db6030da59b840dbb20f22cb9ba6c2218. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ES5301040213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb17ea1398917c7a6c215a4a515bc852fb946588ceb8ce93f42c5684762ccb42. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES5301040198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a72dbd1c0048d70d163f98e742c8278125bb9eea5b2249ed3f9d2921064e1d. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/ES5301040214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2176614b44204427366a76acea176cac9c4c9585e8f0d6cd3c43909aafad0106. 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/ES5301040200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bc14aa3d94719087d9966297d85eed50a48ca166051ef0b80ba25d42554882. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:06:26Z), 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/ES5301040201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218f7da9063f2107f7b6501a4e43e734455b9bb78df31b917474cdc9325d0bf9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES5301040203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2f077e519b4e069abad9069bf0b0a207a99de688894373ea63cedbe26d8adf. 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/ES5301040218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e666a068150172daeb2649877c1c20be1bfe5a4e973fadb81d6070239cc2d7. 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/ES5351303858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6378bb67f37a8c1948f766390306949868de21afb1e26dd7559d15b6529e140c. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ES5351303860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a10a777353c4ea8f08eafc82c5dc2f12ef1e7c0e0444c32f6dc04f3a5bd654c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES5351303864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02de604116b150961e9f3c1f347135887f3cf5fdb2d65649bbb960a2feb93d7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5351303865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dce481cbf600330a64f7f57c9e6fa04e7b679ae762646287f7f62c032886026. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES5351303866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1704bea415d2ff6f3363dd82241e6e827e5117b556413ad02c617509216e7807. 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/ES5351303870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e99861077a32e845b84b9a0eb8bad5a86ca4b1fa84ab813d9c31f5f766fc662. 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/ES5351303871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f741526e5f5bcf3ae16b8b3ccf17e1584fc97006dc5917717c901dcf547006. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/ES5351303872.