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 0x71f0feeffdc86e1cf4f4c7f444351480de0782b8947aa7240f11cdccfeba8d0d. 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/48ad07be-2971-43af-a952-f747347624ee.json and https://artists.proofprofile.net/proofs/artist/48ad07be-2971-43af-a952-f747347624ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Plays Popular Music of Spain and the Old World
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 0xba3c15d8b4f9153e0a04ed2cd253b83b238df7a8b681b24e0e91d0fd06a965be. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USRC11502251.
Boccacio (Dr Kucho! Remix) [Feat. Miguel Lara]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a80e13f1bde12ff9d420b7a9bae121f5914ae92071feb6d09374d8c75e886f. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/FR6F31053570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1100ebcc68860cc37c061dfeb5319617b9090dec4852386fa7083b11fd2df660. 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/QMBZ91429210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c46de3743952bd4e3ec7392eb0ec3c6bdd564d0d9a9a1f43347b2a6cfed6e2e. 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/QMBZ91429212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5ec024016688be49c46ab947a5265815cffc9f935991058df7efcb5a639286. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QMBZ91429213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab661f1692dce1f2fa8145e392c3b6b32623a69f65e03dd5d991ecd1bb836b5. 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/QMBZ91429214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc5161d7a004f409f2c23b55626307c0fe227afe59d1982a1f2695457fdb800. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/ES31E2403603.
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
Bulerias Del Relojero - Remasterizada 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae9e614a8426dc1f490c9ffca39b60f4be9178e886782ed8cdac94ee136448. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/ES5701200740.
Homenaje a Concha Piquer (Canción por Bulerías)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651263b0de3974e99ee44451ef1471db93f19e4f31f765436318aafcc55a6d6b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QMBZ91429209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba5e6d7bef5970a9fdc728d030b626b6a2828406771051996d5610f2f8e5ac6. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMBZ91429215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c20d308f51d93de759cdf59f650feb35842d4456116d6ed14d22d454a583f0. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QMBZ91429216.
Fantasia Por Alegrias - Solea / Remasterizada 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5ef2c296a0eb388d853d27038de46ce6201b64ff51f30149f5ea46c7998cae. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ES5709902096.