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 0xcce5d804a3bb42a2f625c92c5a87ee247d384a8b95bfb95e05ef13c03c4d784e. 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/04cbdd1b-2052-4133-b27b-0cc44ad634ed.json and https://artists.proofprofile.net/proofs/artist/04cbdd1b-2052-4133-b27b-0cc44ad634ed.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 0xd69efe8bdc65ecf9b7e8e718af01ef45ce265ca0aef47d7a7c137a7a4f17f663. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:43Z), 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/GBJCN1914702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0195bc3bf276d134730cc07f67d71b943d22be820811f9f11f6a6d3cc3febe. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/GBJCN1914701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b7e41e3920f86264b1394eecfe2dfac5758f9ec59b661e63267444d517392a. 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/GBJCN1914703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5529a1a7d3fc010d1e669177dd1e82532dabcaf003ad3f2cee615362f4576f8b. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CAENV1949588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1c31ebe702aa1baf5e71f6e6a3bb109be17c174762223e4d66cd1c4ad9bc78. 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/CH6541797628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32183a0de9a3a4dbbff00fdd47a7f3310fc801082f5568b723e6472a073f594d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBJCN2124301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55704bc7b5b26580871bbad857ebfc5c770e7a6b4712fb5df71cd1d78c097eee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBJCN2226801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c8c3f5389999dadad87727abfea10e05a3eb5996eb7a2a4759a168c440a1b9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/GBJCN2227201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9237c83dedabe55340aea8510a7dbf7bc0dacf574b2cf2d5843a55c1c7e2e288. 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/GBJCN1915201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f01282aa814a92a841d3d9b36a18344ea989a3a8c8ee0e8976455ed0015fd9. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBJCN2124201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55704bc7b5b26580871bbad857ebfc5c770e7a6b4712fb5df71cd1d78c097eee. 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/GBJCN2226801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6880476cd9d1e934370d2e1d19b3478f061c6c63a3318877a9f79620f268cf. 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/GBJCN1812301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42ec8a8ac0195a9f2d1417fe4b4e5f000156b508c01d84f7c045dc90cd7a441. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBJCN2329301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb272f193ab99b36b2986706d59a7edc9e554c647e1b56c2b227f697d1807373f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBJCN2432001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f98edd51ed1acf5808c6bce44fd975e7b9b571b474349d3a2faac9618207fb. 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/GBJCN2330801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e42f6a152048947642b0c116f4dbd0ce92013dbb3c8132990b35302dd382610. 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/GBJCN2434101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816125aa09f13b08d833e7536f2d458b659434ba71ae370d93b4606c81fea4dc. 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/GBJCN2434301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e1af456145ff7f1adbf95d92f3043a49a9113c9b16122cc4d50bd34220976f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBJCN2435002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b9f74e99c1ecf37e43e1620b5c40e45ca2c4d3aa1fdd8202e2502c95b16c21. 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/GBJCN2537702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab69fd4b4dfffca20469b424c77cf5d8e44fe334d61ebe50a0658325a63bc7b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBJCN2537703.