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 0xf9a7d2a85bd46e372d9c5c550c7a6bb3dd795089f3b174888571eebcc397c149. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8969d446-284e-4b1a-97cd-5dcbda6acdcc.json and https://artists.proofprofile.net/proofs/artist/8969d446-284e-4b1a-97cd-5dcbda6acdcc.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 0xb1c4ae0bfa76e2fb9ddbdd0b77119c810788f2b7d0bc29ccbd398c25e3374330. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARFPM0000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f10fee22fd392235ad2d98becf0898aecd56d5269b8aed03f36c1dba761b736. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ARFPM0000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faabafc28bdd98ea5791f20dacb46e0cefde6ebd26199dc7bbaf3403717e633. 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/ARFPM0000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dfacbb450c6eeb04ed220c4e87c4bcf3e95c111730ef22d7127d15901549a3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ARFPM0000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f10fee22fd392235ad2d98becf0898aecd56d5269b8aed03f36c1dba761b736. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/ARFPM0000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec83b3db059374f464eacb08b02d7e9b89420deb3c59e0b83f253bd9c1236f9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:05:28Z), 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/ARFPM0000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faabafc28bdd98ea5791f20dacb46e0cefde6ebd26199dc7bbaf3403717e633. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ARFPM0000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252da0ba4435a574d1e37053a9d12625f1fd0176dc8faaf7d903cb2a2d73fd5c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:02:33Z), 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/ARA770400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfe7a5cbf214ee186e7809db91020436292e6d75863c6d23fe0a67b42679963. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:00Z), 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/ARFPM0300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b3ed289d321381144608934c4ebd7628d7674669b667c705c5dea230523ca3. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:28:04Z), 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/ARFPM0600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff551efbd0ecb4286ec575b5f1832e84a34b41784e9c22664fd74c2d858af0. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ARFPM0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff551efbd0ecb4286ec575b5f1832e84a34b41784e9c22664fd74c2d858af0. 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/ARFPM0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc2eac27232df2cdb0447920cebcf4e0a95fa5db654664d2892db9c5f81cb6b. 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/ARFPM1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f59d16f1a84ff52306673d52b433fedb93a3d6b2e39596edab3bb9c9bc9300c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:13Z), 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/ARFPM1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416466b240edf30efe7d4b863422aa35fd2d36a1781df39cfdcf82dd04e245b1. 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/ARLAV2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ea0ffab25f3c6da23c28f172907cdcb63d44d3e28d9400933bd6607032e923. 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/ARLAV2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416466b240edf30efe7d4b863422aa35fd2d36a1781df39cfdcf82dd04e245b1. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ARLAV2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ea0ffab25f3c6da23c28f172907cdcb63d44d3e28d9400933bd6607032e923. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARLAV2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089a31c4de15a24b5637f62723644868982330e1fb55d6d69dd9032864df39cd. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/ARLAV2500002.
Justo Cuando Creías Que No - The Romaphonic Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089a31c4de15a24b5637f62723644868982330e1fb55d6d69dd9032864df39cd. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/ARLAV2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474ea19fe320f44613b970a3a8a30d8320013cce3e7aae4ca0bad978522d51f3. 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/ARC170700709.
Skamania. Lo Mejor del Ska Argentino Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc468694ddec24a4d920325d850ce19aba0d84c4754c422954b080441b4134d2e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ESA031916839.
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 0x7f605e5d2df4de9b1529e0aec2920d9f6b81644549331c1d19f27bcb821fe96d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ESA031916848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22084ca47dec4ae02a6f7fa0587198ff14ab241e37c0b9bc0d2cb1f194eca810. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEBL61244633.