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 0x4dfd115eda871b6c851b3edde2d361f76cf925c6896d1c70c10ee77036701e1c. 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/3504ea25-ee44-40eb-8cd2-972d2175fe14.json and https://artists.proofprofile.net/proofs/artist/3504ea25-ee44-40eb-8cd2-972d2175fe14.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 0xd9b878674ebb233d80c56f193bfad9dab0585d576616dc229ce3320fe6ec9537. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USV291408110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a25074f8f9404693060401dc5f46e758975a1b751f45e0281e9707ac8af8b1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QM6MZ1450672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56901c6d391eef4ca5ce874ca78d354c0b11d6b468434b673da964176ee22815. 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/QMDA71588986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f4259ebfbe4bce343f4bbee0c8d74e75e091609e3093dae7bb8eccb519c0bf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QMDA71588988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de930146037fe7afdbb6ecaf33d6cedcf6085b905f1e4935d982ca6d438245e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QMDA71588989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27c6f79fb9c3e226290a253c38294d754377b5f961449d144b7fc5bff129a56. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMDA71588992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf299c69de814c909316e42d49df783347c02d31b73b7eb3b5a41b7bef056e49e. 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/ES20D1801804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4702ad832c7d60d818fdde68a8eba65df40eea7327c4200cd96c3fbe25e69914. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/ES20D1801805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d58906e50181c46438d614d1d04c4a7c90b72218d13c8e7e11a197e23ce6d72. 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/ES20D1801806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd3e97064b38ded736bb53bf8cefa10dc31f9ddfc7631cbeb87c959f7de62ef. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/ES20D1801807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa0750bc0961fefcf193dac1cccbba9ef7308d8ab9cd1435eed20670da6e1cb. 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/ES20D1801809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4333752b872b5cad2dfd95bf2420969e2c314148c5079e2059f52879ff0a207. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/ES20D1801810.
Quiero / A Qué Tienes Miedo - En Directo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82db96d16698fc85dba643acb09b41949d8f75988f7ceb6cf78c7a86fee7c78c. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ES31E2001010.
No Sueñan Fantasmas Edición Especial (En Directo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0962ba8d737a9c0d2b5f92ae73cbfccdedb3786238f2824eb5fac02e938eb076. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ES31E2204570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4238e1a65adce8abe2db430e855238a1e015d1a3f4c0a7f9d127c9b0c7b7d3. 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/ES31E2204612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094a8cfc80f7e712007d3c727afc9d98918c419beda71685ecbea65cad957214. 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/ES31E2200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103e8aaf7ad14a5d1189c977638ba0ff27ce19849b601c92c294b18939a32fb3. 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/ES31E2204610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bab0eb06aa6673ac4eb6bed681f303a6509dfc59addf6dec6d400ce1643b4b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES31E2204621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d3f6c33e2c76e2603bcc816552fc2138a81ad63d45f79927e405f65bf91d5c. 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/ES31E2305422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6e20203d82ff651840ac099ec3da792bcb19eb441e60a44ea133bbee063796. 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/ES31E2400878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8118fe4d9b178f33ce8e310719f1f478c492d21af6393e56235fd80e3e18f5. 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/ES31E2404377.