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 0xf25d30d2f50a884914a45df3bc10e16e3866a5dbb8e3f559f015a173231e0de4. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be43cb0b-8289-4da1-8d62-f6ca7077884b.json and https://artists.proofprofile.net/proofs/artist/be43cb0b-8289-4da1-8d62-f6ca7077884b.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 0x2480017bd45a8766e6560d024e4e150d0bf3b76719876695f870cdf9d2381aa2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRPGD7600126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4961599c6d445ef7ecc292348a6f7371e60f81647aacb8cc07b75427c5c41ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRMCA6500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234fa4ba1f280c452a3b32cfd7e9cf2a7d1435512c88650ba6326dacc6271317. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRUM70900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2089402ac482e346f7dd8f16401f11672d4f304e4fc172aa1f49c971e6e938. 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/BRMCA6600036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3884ca0c446b890aa213f86d5373c3df552103120c57f81d2712a8a4b5ea729. 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/BRMCA7100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990edfa5574cfdbeda621649c0c79f9a0433748a4b1af2b630de996217021fd6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRMCA7200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a36df67dae2aa944e5453c2eb029482b032378ce9b0e926e4f7d33063b3142. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRMCA7100150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4710f084c7e340dbb41b9423b65615a9402d72be50341e2c41d21e3a1ad7daf1. 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/BRUM71101281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af0f0401e7bab7b92671416560617cd3621101aaf862b21e7866eedc516a5c2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRPGD7600089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cbc84b28d738fabfb447e6be4b6946a5206203db1d357337dff643f71ec21a. 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/BRWMB9701711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1558edebff6eb3426deb51e714868c378f124b894ab3d2adb2000004a7c69c13. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRMCA7600127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935c217591eec1c58edb3d4051368466f8ffd15dfa7afffc5469ed859f8a791c. 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/BRUM71101274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2edb9d2db5c08ea151b5486cc92efbf89fdd5021ac422211c3e65d2b7c68029. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BRMCA7800186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2a9712caada00df4eac2a13c13a67db70ec0278507efe6e4483bd2c45f9e85. 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/BRMCA6500191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b11c44390f3cbd68f20ed12ffd8b23cbe6dcc0965877678d931e177ef2d4617. 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/BRUM71600618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f718f5d5c1b42b456a8da227ebd7eddb54b16083ddf6270fe2f99d0adb7c7b. 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/BREMI7400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484feb239d60d850077a33bbc0ca3c310e96fb5f5030d1bdb9297f5c73f12cb8. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:34:07Z), 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/BRSGL6600036.
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 0xe5d69225ecfc533d8f3866e727ce44f8f1ec63d73b86caadf188d737af145c2e. 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/BRSGL6600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664b742707c286c3e5f8c45f2cd7b2ef6e43d548e1cab303fe39cc1131f3f21e. 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/BRSGL6600041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e88b7d0cf2e5a2eab1f89122adda4e8700e587f1f9c4b4a725b82aa0624841. 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/BRSGL6600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec064ca45e3aec37c3c0336f5cdd00b4ea45fd2f7d226311cefbf21e662899b1. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BRSGL6600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f19f2ed8fbd8b4fc6aff23b514c87b61de23073362ccdfe2bd65b0ac18d977. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRSGL6600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf96ecd102d63c251edb484a6b97e9ae1a00d12ff5327eb85d08d42ec9a42179. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/BRSGL6600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd68da7cc259251103505e058085575719ba4bd9debc3d6aa62705a7d5e541d. 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/BRSGL6600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3e36a87946132e837436ae9d53c2a1fa93439c9040a9998b6324257f92ecd8. 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/BRSGL6600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfafefab8076bcf844bf59e45db2ad75b4c89e8308961b4d83451992485716f. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRSGL6600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3221a59fcb487612f75bed6a4acb9fe22553b6162400fa5231c5bab8d1ec5b. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BRSGL6600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe786caf304abf77cfe5031634b7561d01554a7300ef4befd11d4d652994fe3bb. 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/GBDCR0700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b262a7976d7d98b49787a2dbca6eb23cc5cb02b83e0ee1a8463b20ba6fae56. 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/GBDCR0700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c664684a9ea6074755249e54db7050d96fdb631d31a875f34221684235f287. 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/GBDCR0700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237dece542fd6e75229e06244eecb972673bbd3d116b556e5295bcfd4afa5369. 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/GBDCR0700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b319b28f7e970a6c46cad25ae2b5ba517b2d7b50bf028bc2d1c4a6cc8d7739b. 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/GBDCR0700063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f36d274d08fc3643e602ad53822bf426702ec961959466bb9ebb1a54e0dad7. 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/GBDCR0700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff0c58a96235df3c82413b2550939b58defc85f6dccbe756a3c7918cc490d95. 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/GBDCR0700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55703c1d45c72559dfed720d0b78a01eb4a3870e658047d074408830b878ff6. 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/GBDCR0700067.