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 0x92c29490e357dbcfbac401be64d402c013311cf43f3d16c16063e8ef2535eb1e. 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/76288c75-5170-4c1c-9b54-7692e32b9276.json and https://artists.proofprofile.net/proofs/artist/76288c75-5170-4c1c-9b54-7692e32b9276.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 0x26e7f714a7101950baada84a21ac416d8b07e53fd7d8a433534a214566d58e16. 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/JPJ222001543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64053b0b9a3a755f7b5bfb8b0edeed7aaa2c5dce711e1df09c8533cce444b79e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPJ222001542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f1ee12ed05c999cad12f58e0cad6bc63d05efdf82eb56168031a4a77f34c87. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPJ222001471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc598a0efb389ec1b5148c552280a22edc210618ee353e66a6eee5107b27013b. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/JPJ222001544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184445e11e2056b078929b4bcdffc004fc5a1529e76e0d569c430106f746af0c. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/JPJ222001545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824ca31aa2942a693416433e7695699d93d5eb95e23d51582304452f3fae43bd. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPJ222001551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5053e2de07ecdf0f4100511c088bb4338f83461a5c7c62630a2b735670d3a3. 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/JPJ221801172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2112ed8c63e6401f70e2e8ae5f097c08c3b417011869baf82e1343578bd9f724. 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/JPJ221801174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370803909c91f6f7b7514f46efcc78c102c8b265819ad04e48b1474766ea470f. 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/JPJ221801175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740e7c47f04b8a7de728b05d279724a95e094da97b2a6b643ca67b516b8c265f. 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/JPJ221801176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284286b2459c0230aa538821241ab1908c7a6816c2c38eb4252b759ca7276141. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPJ221801177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9584f26db95976d4efb158eb88107a5a1d71a189d485dc4b6d7d988e23a1bb. 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/JPJ221801178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab9f1174358e5d72457b008c1014a57eb5f5777b49b953c8d61e05ac6bda4a6. 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/JPJ221801180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6248c79506c652bfedd8ef0467afedbe06662071b62d2aaf2096c068c4a9c6. 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/JPJ221700996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0972bb945052194c6d95ed213e7971a5f7f7e21ec1ce32c55b97547771177b9f. 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/JPJ221600943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd5ae695ea26225be86818ecdad10475405176241533d942997e0373e126afc. 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/JPJ221600860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86b03bfaa8be60759c71914ff4b0581cfa4cc549e548b2c9abe61f1949273b5. 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/JPJ221700997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b8c9e1b50e3bf9a1c5609819229815fd10ee054ba2367232599af5688e886. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPJ221700994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf54e80c54db59824c8bb24711f622b2d211e153b17c513b58d57bfd359748f. 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/JPJ221700995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbcd620799cc0dc16cc4503ba4114860279b94c1f9204bb60f4a5168ee8d731. 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/JPJ221500735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61679ed3f386004859051dac164b7f6f86427d85e93e487726884414e8d1e9f7. 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/JPJ221500736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0e9488d7424cf7036080567c7ebb7337fc193af4d678c8c4afe1b36d26f634. 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/JPJ221500738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc066877b5e7203bfeb7aa56074d3483c3f61878705282a8b4c20aa3412547f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPJ221500739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba940c6606a1f11f08fc1d3480d5c6edf1e4983a403587c366a0d7bb88a4db1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPJ221500744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc32e0ce788f805de7e96c9734be37473d1cd2cd3f06cf5e2e123ed063f6ac20. 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/JPJ221400652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc195855d1414980d34a3fb9a85c9153976c19ec1002e8bd49f5d44e9099c7d54. 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/JPJ221400655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698cf4c7f98265dd66a5f18accb44bf33dd812ef4f78be09b904dbd8ab46744b. 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/JPJ221400656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855e84d0ff51d4888e665b6b31b6ecdae39187f21c37d4ed22b783fcddf7b425. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPJ221400658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e3689512b11e268a44a4c7e8ca633c7efc32fdbadb038c3587b3b8bd1c26a4. 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/JPJ222101695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd99595fe5868ee0e4e3d13c8aa124e0279a907733c55b5d9c7746e3b7b8814. 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/JPJ222101645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5aa41a1183fe70252ec8f3e0834a008d73d50d1a33479d477a631c206b0a8e. 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/JPJ221901357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb92b118743b2219253cf11769559655817c6b047fafb1e07960b54906ef124. 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/JPJ221901281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf4aa19008c86b10a718b127666af98c69d662bdb067b88cbdc965ccedf5584. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPJ221801123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83928158cbf7e886b5393c62d29c11c836053668bd47ac3fde1699edc816c3c5. 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/JPJ221801098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5fe38bb4968802ea582d8670fd48dffe9d6b60e3c9a2050b8328b3c44ae079. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPJ221801097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68b98e57230a8a5ed8b44b4b2c4485513ded668e899037cde44d4c6835ff623. 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/JPJ221701083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc65c1ea744134f042dc3f611b5f58a932bd90143721c94ac33d09023e593bd3. 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/JPZ921404637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe23f19821baa9cb06a83af362ba36721e58ef11dfc3ba72fd6dea72b376281a. 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/JPZ921404638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e40ecb238b25a32bf146f76683ef0d8152a7c2cc70168b9214f6fe35956b5f. 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/JPZ921404639.