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 0x2f3f0a8389ea43b5b9b75ef47aeb6da777dc5d4e24ae1169bae0c163ca6d55e6. 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/49895635-e41d-47ac-b169-7775cca24220.json and https://artists.proofprofile.net/proofs/artist/49895635-e41d-47ac-b169-7775cca24220.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x1e657990f057bf49b9bc071a305d3bb001c3d6fa09ac3e51fad5bc126205ecf0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHZ42192231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f465ccf4c25a39dbb18246e1dd848bedd2a72fdad1d7f25a8a492b01b97166. 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/QZNJW2189764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f465ccf4c25a39dbb18246e1dd848bedd2a72fdad1d7f25a8a492b01b97166. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJW2189764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7cf34fd8066f5f018ef7b7c48c937b913510f45dca2b391dd1edee53334a7f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJY2214721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c70461f0f1e9977ab8ea44e20ab2f0fc74d5ce91b5ad24e9a13fd5f166257c. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZ5AB2387698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17091e28515503e59323fe4becfb701c4221caaa3f44e30e527ffbdea0aaf61. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZ5AB2387690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9da616b7572d2dc2c198775952e3b4c4c6ea31de678167f51e7e274741599dc. 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/BKCOW2400002.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aea73938cc70356640b6dcddc6e53ae7c890390960c913b3d6e63f3a76c3307. 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/QZTVM2442049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c839221157f8421d3c1068222acf14116e163d1ea6589f5ee041e0b60b7f14. 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/BKCOW2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd845b5686cca17156a3e3d13ea06ba7efaa21eb691029fd76b23301024c2aa. 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/BKCOW2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ae53665de07a693de06da50c0cce7f86632688ee3ef74df68bdb172f4d001d. 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/BKCOW2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53983b30b2e64c423fb69092b949ef7d27cb6840544aad0c4b94967d95196bfe. 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/BKCOW2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4462bd200bdea0a574ca2bc4a66eaed385257c81764210e2e3b4aa117862ad7e. 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/BKCOW2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ce4fced3156444eb536613d2bb2166e20395b71578592032fa4f3d00d83aa8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BKCOW2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ee37f13cc2818f82b86d531b47a7741d00c659a99841f10b9f4ba326580734. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZW9K2414860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3dba74e856a066a6c7d5065c0452c544b09537215dc5d0b5c37e9e1cdfaf7dc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BKCOW2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b61703d40f11c539dd00eb15c17364b8619d5a80a28391c71094a7735024fd. 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/BKCOW2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6c21783d38cb397c95155dd7faa4a325885f0e2db8a09d05654a72f2a780bd. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:47:15Z), 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/BKCOW2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37edc5cccabb8e57dcea5f084f2c2dadae2ca045d6b9a3dbdf700a66a33f9f96. 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/BXJ3W2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422e64e403ce5692d6b9231960ca4a2c752e018551ae6162bf69fb0b0c7e2f7e. 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/QZNJV2065488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403f0964f2eaed004194ad821d6a460efef21062a1e00efd30a42b75d64b6a96. 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/BCE0U2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749e03977a6bc2ca6b3a96edf6119c69b60546513ee9ada7fbbdae7526b7ba29. 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/QZMZ92500467.