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 0x4f5761c42184fc7806377feeb03fe149261c21252e25d60d200b0c15a89209bf. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75add698-ff8c-405f-9625-5a3112b66739.json and https://artists.proofprofile.net/proofs/artist/75add698-ff8c-405f-9625-5a3112b66739.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 0xbc19c4801d40968466bfced3e442a726c2f44461478d540ad20ea7ddc8c0179f. 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/SE6I32048039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6eed4c394a29f478868318fbc59c1805ded82f0186432eff2cbe76ec5c3b8c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:01Z), 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/SE6I32048040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dd7d0d6dc6ea8fd5376e13403ad1e9387c9b5e02c4981067729c043a924cf1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:31Z), 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/SE6I32048041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f8906a3578fbfad43cd8dc97f0d50d26180a5994311e5d5e837f59fe4a5b21. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6I32048042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf602f76436a6c96bd6001622d18d44c4fd4042cd6c1f7cf496194e3103f12e0d. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/SE6I32048043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640f02219bf54a5984bd0a66c8950889b635c05e0afe3e9e0f4c2abbcd4ed642. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/SE6I32048044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fca3f2ba39d7dadc359b5c801c76d156582784d655470470283a843181ace2. 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/SE6I32048045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc396cc88d7a60d55a17fd94c0891dc8404da52a59ea11197b91bb9304befc0. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/SE6I32048046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd80cb46a37d6f5ae0959a678c1ea2b56d344d0c1648118d366c32283643f0b0. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:30:14Z), 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/SE6I32048047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395c21753de39ee1e70eacf16a9e77310abd3bc75bfb5a238c8a0ce9f2e8deca. 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/SE6I32048049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed96b0994b64cc71ced5df1d61beaeb359da43421fa6c32374f9b1fbc623d73. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SE6I32048050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b28700046440c761b221be78b5b8207348de32e16514515cb5ceffa3348ffb. 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/SE6I32048051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd60f9e8c51495831fc8b6ce25389a336f72dd44aaa3b68a2d676da2684aa849. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE6I32084082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1e41126065612192ce73d78c1d215bc308985ce96ec21c798315bb6c0d9067. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SE6I32084083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814887a458d867b07ef8d78fb90f6398b22431c0546342526318de73aadf17f3. 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/SE6I32084085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dc4a3b9bf3adbb7dbd9d9165bfbe8fdf9afdfe2aedf3b4aadac116e82f919f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE6I32084091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcd0393c168785adb437485134f79e2367a7ef4009258410146bb032245abd3. 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/SE6I32084096.