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 0xd14df3e117faea0f32b514ce0328a7295a3d6f49098f6a641b781fbac92c3915. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccb2b8c7-7d7d-4665-8eeb-b73ea1097220.json and https://artists.proofprofile.net/proofs/artist/ccb2b8c7-7d7d-4665-8eeb-b73ea1097220.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 0x529b4eecc3bf962c2ca4ee8c6bd6abea638e3401484345827eb372b7450ea700. 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/QZ5AB1642435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe267093a701d8bf92b0a5d09f556dda85c84d23e0e62daf23a22689588230dba. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZ5AB1642436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a07b746f8148bdfc2ecb42fbfa8040929649fab8c26adc6759597cd816522ae. 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/QZ5AB1642438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e60af40e86ba701d2ccc146f47e5d5313f42e8c11c50eebd8c53160098f0222. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZ5AB1642440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96aa92c5f8027dbdfad55316a7310bc3c35da5993edbdd93bee76be2be7993f. 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/QZ5AB1642442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df5062c187aaf6025c13207682fb0cd094edf258a5350b9285e82544e970837. 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/QZ5AB1642444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd05f1a0207a3d8d28d1b06ef1a7fa92d44484a0fb1663442f8b0721906aee7. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZ5AB1642437.
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 0xc35ceb933ed7a63d051cb6c50c258676876cd3343bab800f1f9629b6bed058d5. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZ5AB1642439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f6f39656f462ab54ad6b8a54d2480022298673756d7fa33945997b2b9d6e51. 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/QZ5AB1645784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2313c0e1eec856208fb890780b318f88d3dc1cbe06e8143d423dd8b8121d836. 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/QZ5AB1645786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628e758daa1621665e05c82b8d10d147a33682b1588fcac482c1e52647877f11. 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/QZ5AB1645789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43fb3721503b40fe211be2f371b8016a30e9a40f23932bdb009b71eb39b167c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZ5AB1645785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd0efad1152670b4f25c997ccd185c1d0a3d28405aeab7afa2ea74c56efb67b. 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/QZ5AB1645255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce6be36ccbe3f60f1291eb8a1a5e184f278ce898e477232893dc5e2b8097c81. 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/QZ5AB1645256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0217ca50a127ae59b49b9206e119b1fd22357cc4c7f384e39fbc2da4191058. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZ5AB1645257.
Cicatrices por Querer Amar (Detuve el Tiempo Ii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb156ca432b5eab7a83c0cd72985bb7e3c5960bddb89ce541c681d1dcfaeedf5. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZ5AB1645260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2d654222275beec7c8b038ee126e5b0fa42cc49d96b59d02d100983ea96eda. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/QZ5AB1645252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ff4516cb7b9766145575f1c8e14870c4d12f5a045664153ff7da374ff54295. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QZ5AB1645253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b319162fd742e275516dd640f2889304f82e6a3ef3721d74aaf4909653017cb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZ5AB1645254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660ffeee361403dada72573b4f49acfd336e359c37cdaea26da70e171e935dd2. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZ5AB1645259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351c3112c8fb5ecca36f6752845af9d2e78c59b02d8353b0d623cc07c4a84382. 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/QZ5AB1644458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcb82c62dde30401e64d1e7b14fdca7641acf115da1ebd6ce18fe7ca1e9292b. 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/QZ5AB1644459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26d712d347693ffe8cbbd3c7885eef023e6b61a21491ff9e3d5771458c4551b. 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/QZ5AB1644460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe1a1c55a657f947693182b4d680b1f242e74cc04ca183fcc74b540381fc293. 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/QZ5AB1644464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5228f6a4c2db3a85b91deef8a12f4d086f4f45fa5387aa1be12e146b61fe4c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZ5AB1644461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697a79603c5d9554df47382b9f6de1d332927ba2e601629537169589533017cc. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZ5AB1644462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e2db3566065521bbbf7ecaeb2ff721b15d23004b69c6ef06192722768757b6. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZ5AB1644463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a066f2cb9244f9ac0189e1d0118f20640298e8cc9c9abc813ae90cbdecc7e5f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZ5AB1644465.