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 0x3de05423bfdd8553db8b3456ac234a64f943f6bfcca4781921fa7bfb522aee2d. 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/3ad67dda-b1d1-49a8-bbe4-40e50a782534.json and https://artists.proofprofile.net/proofs/artist/3ad67dda-b1d1-49a8-bbe4-40e50a782534.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 0xe93671b62c648a6d9c8dc49473ae7ea2216b39d9e6c76a30787e03f119262b88. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QM4TX1805694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdd23f5cab7f2002e42ca019df7b03c7c164684a1eb1f49e23b11e129280d5c. 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/ESA011700168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3b57de36b8c23db695af9d283db65c8e3d713b9a0c9806d0a4b789ab0c68df. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ESA011700169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf95e705c16d74947eea7a76e130b984f878dfda13544ff27d1b8a0a46f17d41. 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/ESA011700171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863feedd71acefad903e20fba676a03449f745f6082fb88664ccbfee570938f1. 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/ESA011700172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9165e870d38aea1246e5c0b6bfdf2ad3704d82f970babf1365b7c2f202ba5fd5. 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/ESA011700173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c0564bb3f7b0fcb4c109573f0e9c8fe32888d737e1ddca7f8bd78c9b026c02. 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/ESA011700174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb231f1875dd58c0946435834838c1a8e45ace245ea8b069fafe8533948aa0eba. 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/ESA011700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb976969bda47e9744ea500949b554f71145d30d39edf828b51779dd5fa8c4cf. 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/ESA011700177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c628aab3bac5f4624de7acda1ff20586d8cf5aae7afe009df1296641ff065e. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/ESA011700170.
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 0x0ff3b6e8cca72924af21a0126f6e4467450bd6be8e5ffbb3c0808d9b2a05c5ef. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/ESA011700175.
Benvinguda al Desbarat - Remix Pasqu Giner
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4646a78a9a5a96275a7aefc51eb0b93ff6eacbe289229c13c007625ab658ee24. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/ESA011700178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc116de0e4dfcdaf3e9b945279c24edb3bebe601212e63cdd23450285d38d8179. 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/ES11D2200727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cca5a7cc2ca48d990f8b56f3dd373a9145008146ec7c1e3831ec0b07dced450. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES11D2200726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaacef0ba88407490d53724793340384391930e9a1211c1a480bf3dec7f3e55c. 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/ES11D2200728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ad4d123feaf977f329d9640147e6a9ea3e7ec7cdd2305cedac9cd14ed6ca54. 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/ES11D2100721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564ea63fa3eb202ff89e9da758e13a4c2b998a2d55e65f1af1fbb6e340ce7bf6. 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/ES11D2200729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cc91c2ba878b3d922b214b7cccf9967c4323442f6d3e554ba0450fbe7531b1. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/ES11D2200730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564aa91cda160ac7562dc563cfd2aee0257aed717ea3790ff5a0f17f25ca454a. 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/ES11D2100687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986d1b0f06f4e384369b9099f9ef82e53b4ae1cfc57acd38a1b16757e219b7cf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES11D2100650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2730f9dad54ef0dee7e00477dda2edaf38e2067a3ce986b239a0b392d30f30d. 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/ES11D2100586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69474a59f3f46ea587cab17160934be797d5a092ec7c6e79fca97f41c43642a4. 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/USCGH1745896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e4b8a6b0f9db63c24849da293d6a02aa7739c891c2b646d924a02be9fb4fba. 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/ES8022000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e4b8a6b0f9db63c24849da293d6a02aa7739c891c2b646d924a02be9fb4fba. 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/ES8022000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ada05fcb628dfdac62c43f87173edcbd5aeea41dd6f42c9e8d89582fe838043. 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/ES8022000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aad82487e8f376c3aa10f4f514fb22b4dc6e2af75c095536209d2931c3b790. 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/ES11D1900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1ffa936334630accbf2cbd6fa9d5856fbcd982c2c33e8b3d4e28bc35ac2724. 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/AEA0Q1816803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f35fdd6c30b9caa8fdfada74a759825f840aa0d5b5fc9dba9eede5ed75267a8. 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/ES71G2151937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d03fc43e3805d0e5beb4818ac171f2b0122d43a6d697730ba86009b16ea28. 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/ES6102025711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7938c088bcd335da75b4b670955c49563dceb9dacfd2166dc858f8a62fc80b97. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES11D2100515.