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 0x63fd4523a6dc1f9b829ddf5e3ee6d2619ee6ec59f8327546474bb8d39cd504a4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/527fd8bf-22fb-4873-94cc-87916014f587.json and https://artists.proofprofile.net/proofs/artist/527fd8bf-22fb-4873-94cc-87916014f587.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 0xb3424465b1a93274637e7f011e4b8b28923e944e6375e1c44611bfbb16553365. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZNJY2441953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8721e0981e818ce9fb3af7318162dddb51996e41d7e7afd5ebd16fb17736964. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNJY2441924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f35115edda526668f969f1ec8253746bcd57c43a90fe56087c203413f5a6bf1. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZNJY2443846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869dcbd30616520ce1b26af7beb0dd70348f24946e5a25822d5e3d059e1024be. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZNJY2443832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce880ff0d86f4595c4725c694603acdee39d8e14484115ee7f694898d941885. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZNJY2443831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d0a0200cce366db307378bd8d1f43e0a7daab791e41d45e18aa29169ada608. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:29:11Z), 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/QZNJY2441969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792ee53f73c123649122084d19fc8687899d0c55763d977de55fe0159aea80ec. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:07:52Z), 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/QZNJY2443822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244632b51e3c85d09dc231832d0a34b2724fee247715976e9ed4bbb950bf2677. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:00Z), 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/QZNJY2443847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5099a6b97e2bf90e42e2ac3362c8289232b263ae5a287bf46a79c09fa6b58b84. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QZNJY2441928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e4c30a67b321983c0451a602ee5cf3e7f8347dc051f6e0ba3faa7c318e8d13. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QZNJY2443827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7742080bd80c4d52ea2bc3e067643040bb9873c6cde8ba44a27ac5654e846ad9. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZNJY2442011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c177da00d9b6db2a1d54169a6f14f4aec6c920290060dd412303701a133755. 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/QZNJY2443824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb62e87885396a82ae7e9f47ad81cdfa04692b41ad6f6536aa03d60302aafe9. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QZFZ22358337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c7bb2ef36ded46c17861689c842800548747149a49ac181ec3868cf47a77cf. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZTPX2499498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9658bd0b4ccdfd8d857b5bea81c722f92510957c7f5396f12bc277df557bad6. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZTVM2427512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235ee67e01aeb6afdbdc5d7118f29246fa680f45d6c6e101c2334f590536b71c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTVM2459039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd3252ef868db210bfc47dcebdea96955329e52d8cbae92cdaf98765029b641. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZTVM2459037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ceb3aaaea6f2f7e28dd0569c959ab0b836f43f46697bdbef15e38bb828236d. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZTVM2459034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ab4e88e3a9dd63201b02231eb156fcb5ec49328b8570544e8f3dbb8acd327f. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QZW9K2485729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441e348bb4b7fe286960cbbe613b289a5cb45f75e5921b251037d362e33eba22. 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/QZW9K2485738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366460ffbd2d185d376262babf385054a7d4771be952dad4d779fcaa30d16d36. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:47:14Z), 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/QZW9L2429023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cc689af8a034509e2a4e0e6cbafc80e55982e7197a48175eacf1b677e48529. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:56Z), 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/QZW9L2429022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6928695afe9ab67434365ea2e13c8c3432f3d6db233a9439143ad0ac7c961856. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US7VG2537032.