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 0x316c406c9b39b68cd0adfa31a0ac87ba63c1b93b364d216da70e295dd16b8072. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07611c18-7c11-4057-ab57-560b7f95a2ea.json and https://artists.proofprofile.net/proofs/artist/07611c18-7c11-4057-ab57-560b7f95a2ea.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 0x56037faa8190b158be7aa9b3308ca4622a065b80274ede9abbf0b142423362d4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX282249159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa766dd618703f869945974c5a6847a2dc721ea1a7151746a423e3deea4f7b213. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX872202288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9970a4f95b0af71942d9cda27f6bf9d19fb92a68c5d1ac5b758c4f576fb7e1. 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/DGA062376162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf386aed11aa234a77e54b5637b1b9305f0eee99cbb3661ea855410778931c10b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA062462643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6207deeaf0cb50b3c9a6570625352d15d78f933273ae44d67d132f5dfa0fdbd2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0Q2431091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9ce0d49f0a6f7c93729294c9c36a666d2bf0a56b665d0b3da1e5e551fcd4b6. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:27Z), 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/DGA0R2463723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc670638040e4435d7cacb59cb683c7640b599b7389bd44f2c13440dd40516a. 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/FR10S2580855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff2a8c764e9e1f6e0ba0b108c6bf3e852fee356dd31548b8bdc8f546e59c86c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:31:51Z), 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/FR96X2545494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006d2f8ccffa2566f11bd98bb23e3f65b34d7da4aa298ccb1618f2f1a3a79c10. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X2545495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc91da2c1a5e1056266ce4f4abfe3bfd4ef2d59884f97f8f0643ac7481274af. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR96X2545496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee38bd416f220caa80340dcf6a4955ed1b007a115bec7f4e72fe091f53967dfe. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR96X2545497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7016d618b1714dcc5cae38ef2380e75c19ab55096cbad17105f658ed0f1f655f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR96X2545498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1e2fd94f6ae8a3c5158adc264d7a0457fce2455a543f9d904a2f62fac25b46. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FR96X2545499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa86f551d8ddac3a2f967e3b99cab70544c34860747cae1540047ed05fd44c9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR96X2545500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b5d25a74289faf825b736924d9512fdb868b6b3b0ca5fe892cef691b627bc7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:15:29Z), 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/FR96X2545501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d41e494abdc1a9816f2fff18545615b8b6bfe9b4e981ad904dd4dc57433f173. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR96X2545502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce754d0928fd9ce8595bafe88428528ddc024b4c494a1b6ab150c2270a73094. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR96X2545503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f29f3da5e24b719d82abc04284f12ae102a6cb6ad0b1e27d0714b01072de4df. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR96X2545504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c11eda75d6960f2420726c6ce628a3409b02054357346410c62941b356ae79. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR96X2545505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b452b725c358db8c153c3f1e201a30ad6a28aec9d723b0d7037db14d2eef571. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX452538190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5138a2ea683a18168dc9ca3fb444a44ccda5000ec2117209d215c869a1e2ebe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX762583525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ba9357048239970a4142dbde11ec59d98cba868c24f901e4dcf12dbfc4372e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX872532388.