1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x76c612666351427db095adf942efa7d1ee6c37df2de1fc479a3c94d367f505bb. 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/2f472d5d-cbbc-4d4c-8bd3-faeeb759f8e2.json and https://artists.proofprofile.net/proofs/artist/2f472d5d-cbbc-4d4c-8bd3-faeeb759f8e2.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 → block OTSBitcoinBlock must exist at that height 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 0x48ac14376ed093f3bafa8e946f7cd213e864210fb9e3ba1fe82aa53a17238859. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:48Z), 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/UYS059600403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc735302dbf8ce662761b7e1a31cc31fd4430f8988dff1c91ead9458caddaadfd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UYS059600404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf4a02aa04e7c8e21fdc950650173df5f7253dee0711e790a16dd5c3205ed0e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UYS059600173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88b4030492ea235ee3f3cc2d7f5eedece2f4f1d05537e7d27381d2eba7f4401. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:11Z), 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/UYM121705095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22771ab278dcef40f2b8c26d6c01c538799cd11c34287d184029650bc1c255de. 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/UYM121705099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe8571808514db5abf818923d456127eb2500537400f2a26a1594911f9d88d9. 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/UYM121705098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa170229909946edf4b84c42132e4c236e977598d6c32b354908ce9ffca3e4769. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UYM121705193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7102b97bc089dac466e3bcd5585c7c513ee1714ba40208444120477f85a486. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:52:51Z), 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/UYM121705198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9dd189a87745b0ffc83b0b849b45d83acaa0994eba67517e3de6418f528125. 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/UYM121902207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c91f6d189dd29966e1ffd473a3adadeecdbca93c1ca79923d8d16b1b2ade4c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/UYJ142000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c30e49c309f704c1597210d63b01af9a35abf3421735e2ae14520a495bf6d60. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UYM122003666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a55f679affc210f94ff3cce6a85c4f48bfd6fd37c7a264e61a4c1d16e97ee9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UYM122105092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62baf990cf6ec9f91f54bd3925025d12e5d7615602ed9294657211371465c0f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/UYM122104574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e80181ef2c4243179fb5be013d1486092235e4e2b34cae87b68d203531815c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UYM122104576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aca164ef31c32fcd1f3b78b037ef20b22c0d605da5b80b6e828b3a25f52f3b4. 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/UYM122201558.
Lo Más del Siglo Uruguay, Vol. 3 & Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8719a477d157bc88b59fad3802c44e28a0622904774455e2ddc06471946a4b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/UYM121201149.