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 0xb7f76110780bdf686a19b9099c177ffbaab7dc2a35f83d97bcae585ccf62c252. 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/048d2dde-4990-4b86-93ce-7477deb79523.json and https://artists.proofprofile.net/proofs/artist/048d2dde-4990-4b86-93ce-7477deb79523.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 0xf13003c6cf3871a6925bbf825102c44f619d89bf51b020f72db7e74a942bfce9. 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/QZNJZ2266622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8928c3d9cfb6df87fdffaea63a40a02ec135672b06dfc6e431531c4addb27282. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJW2221579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5871a780b12605d8ba16873919fbb215f282fc6749a53f6342a791dfd3d926. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZW9L2260838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4e4047284ab218a3d6b877c56e8e33d5dbe413b9c79d1d22b38be873716aad. 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/QZ5AB2252038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440b6efcb9e6fb8eb983e6d27657e2ff3fcc4a533ea3b7b289ab44f980731c63. 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/QZ5AB2252040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986fddfa0400dcdb1d65ac8157ddb68b63223a597dc68306093c2a5c3ba48a0c. 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/QZ5AB2252041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c49baeef441090eba5d02523b7dd266cb3dcfec313350ff05e49a21b60bb133. 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/QZ5AB2252042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca3f34cd5d52a3f1841071974f828ae69ed0ff48af1f0041a5f29c564018c30. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNJW2171578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d11eab385d9c2a7ca5497fc73af34ebb22b16682901a83e726968f8421e4037. 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/QZMZ92124127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e33afae7cc60c1d59f62b5b75dd196f9a12f965099c97ca2d37bcea581dcf0. 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/QZHZ42107618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8120c9e5d391a2375d4aa370332e0a1e65f45280881ce4b19b37d68596aa94ae. 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/QZ5AB2447634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb439ecce7cf0d189940018ed95bc44679e28b7d8b399969c4166141e9d2de6a. 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/QZ5AB2447635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ba2c3bda61e6a5efa0734ab63264a9ef832510e5ec23d4a43f7c1b9257b9b5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5AB2447636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5871a780b12605d8ba16873919fbb215f282fc6749a53f6342a791dfd3d926. 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/QZW9L2260838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cace06703f058ea4e2da353b47fa086071f31412ccc0b1490159a4817e0bd37. 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/QZGLM2346876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c19a4bfb445008d55f454140ba46d2a7853b2ff5681907011084e157f93ae9c. 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/QZ5AB2447647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b912c651ffc0ab16fa2cb5eed1dccbff26a760b69ff640c7b6c89e34e592781. 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/QZ5AB2447643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055e1dc9ee90a4e58ff8b3a822939c27b5024f5668603ed2d5dd02ae8d594dd6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZ5AB2447641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183fdddb408d7406504d278f34b37297ad84a9ed58a7fd134d072652f106cb1e. 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/QZ5AB2447638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f16f09fb3c9b3228e5328d7b4f74bd47fe18b5c371149da73538573c05cb022. 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/QZ5AB2447642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53011b701f93eaf0e65a029e58716c658eaadb3a96c8c3e3034f41afa76fda60. 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/QZ5AB2447637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063388e31a556af7cd2ee4a03047f181bde38dd05df6069b2528426d622cd64d. 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/QZ5AB2447646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c22ee9b12835c393837f997bd17566f21995534f592ce151df3bba4296b2fc. 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/QZ5AB2447640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f24f3d1ff3376cfc9deabd8c90d158ea2054f2211fc60256371bfc9c1c8907. 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/QZ5AB2447644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2832ee159026b60b23fd8f54d81e50fb33699ebbadc1dd39298cc442d6be2259. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9M2281196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092356739995d665518bb8b5e6b44c8c7aea969fc5bc7eab0bf2575623593a75. 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/QZNJW2376863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28e42030d50f8a6224e215510dc74232cd6c4c4a8f06808f34a8464cb29fb29. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTPX2362345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff6c116f9c92302367a8e456e11e8f26d1dda298cb3248b756a3722b683451f. 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/QZ5AB2447639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01466771d63a0a6c192c435b016428e229ebbcc0ead47b1d0af436870edb1e4f. 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/QZ5AB2447645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ee7e142433ec1a5eacc54ab3bf32d22c0faa70ba72876d05cc6686a522dcaf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJX2490189.