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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9ca242e147118990f07fc1c468f4882eff91f741680061f05172fd7e40cacc. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/173a4151-2d9d-499b-b9e7-14d8af2a79c7.json and https://artists.proofprofile.net/proofs/artist/173a4151-2d9d-499b-b9e7-14d8af2a79c7.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf045d8d432ba898a84e415b6a77ceb7fec33746877ee0a746b726c8dc26fb35. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES75E2206271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bbacf8292a949c272453bdad40ded46b0555a985ea9a8f3afcaed16e278336. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES75E2206741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9256255ef6089359668cf9cee311787ea8a0fd29e5a1d0c12cf9c10304bafdca. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ES75E2300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f735b44b434fb87f5047ec9c299baab8fcffd945b66d8165b4bf5fe3c8a7c2. 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/ES75E2300815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057cba50c05e198e895dd6bcdd2705e9956109f1dc17f24620a53d1698362c2e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ES75E2301210.
que cuando tú me miras - #DiskoverStories (Acústico)
que cuando tú me miras - #DiskoverStories - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983a857775df8ac4f32ebde1a31916f8dad7dc8a71609d696be74f757dfcbe23. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ES75E2301702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77a227f4128c3706ffa07f3797c5d0fbb40c1b19fd6ac2aed3ebc9b9ca1311e. 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/ES75E2302331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e2285d64d5a9665d8565e951a82b0f4eed568888d17ef1f3a7150c7972e556. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ES75E2306736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf335d9fd46f16290bccb536f78781c71d8aadcb4d7e3508944ae7f2ae30f62b5. 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/ES75E2400921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb0b315cd77c8fa81794432175835bf653107c3446f125c737ef4aedbcbe063. 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/ES75E2403189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf335d9fd46f16290bccb536f78781c71d8aadcb4d7e3508944ae7f2ae30f62b5. 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/ES75E2400921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b9767ba0c77a0bf1e0dea5ba943c7ff5ca6846c8ebbe53148b54cf3580988. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES75E2404035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985e335b3bd056ca00fade6d16055c3d54a3a6407036ff8d9e72100ba977c051. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES75E2405072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb0b315cd77c8fa81794432175835bf653107c3446f125c737ef4aedbcbe063. 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/ES75E2403189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b9767ba0c77a0bf1e0dea5ba943c7ff5ca6846c8ebbe53148b54cf3580988. 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/ES75E2404035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a223ef7bdd8d846784cc983aa79f00ced34867c6ec61d1da1906455d9bb3f3. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES75E2404995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616716b072a23a4b80ce87e20fea0c0a037cd853e382ff6d585fcbd1be79ae63. 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/ES75E2414643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bda95c8b627fe196602335863f86a6911a67846e14119e49adce02c843614cb. 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/ES75E2502236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66d1a4a87fd8c1df3562a5c79a06f52931847ca7bc7744f7970bad0e61b2dc9. 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/ES75E2402575.