thumb|Cotton corduroy thumb|Cotton and woolen corduroy Corduroy is a textile with a distinctively raised "cord" or wale texture. Modern corduroy is most commonly composed of tufted cords, sometimes ex
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 0x379fc61138f0750ee83804e661b4db4e3aa0b86a1038770304dbed0e16960fbb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42cee3e0-da5c-4600-a8f0-7f677b1fd816.json and https://artists.proofprofile.net/proofs/artist/42cee3e0-da5c-4600-a8f0-7f677b1fd816.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 0xe88b9f3d6115729f74f2fab4fb22b94952ba083b4b70880f4ceef99960169e38. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/GBBLY1300980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b602f017551be4a76f50a6241855aa6dc2c2b43c98b50385887197714f86ce. 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/GBBLY1300982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d125a781aa1ba18dee7d3f13341e312ed99525be5ac75471c5bb94b3432fcb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBBLY1300983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d749c700568f4841290944e2a47bc1e239ac5d1765eee1b9aebf7b12923dc51. 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/GBBLY1300984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa189020c594faba39921be41336ba6dea33846014fc43c42dd0971be6802b5c3. 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/GBBLY1300986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5117473a58d7b00815616107bd3967344b401debfc47589f40866974a85e000e. 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/GBBLY1300988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b0541fa952f0a818b22fa83e1004268e7860ee6cbd7a8a41ac1aa2d1bd1462. 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/GBBLY1300995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0badae45819c337513f159fffeda14c0b6a4b3c393f5b6a7371bd826c2364a87. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:56:40Z), 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/GBBLY1300996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35632c2e2071364cfe77271f1e4546ee05a6223de9d4544c337b66b7af87050. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/GBBLY1300997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7c59bb84e829a0a1ea5e06c3d317b0ed88864ab54c7c465f7b23178f5413fe. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/GBBLY1300998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1b5c0b58b9caacc605b897dcee5667bbe598596d3c89e474864d8d52571639. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GBBLY1300999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270167422a14b9a31788798fa8c76817913ba08918eeb31048d3c5b193ff4e94. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBBLY1301017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6be8d2e904c8a70217e032ec8564902675c85e8171d6d692f7d9454be617ece. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBBLY1301018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ca50553f0b4f8282f7ca26a2dfaae0c6febe4b43f8271a8f5a636151477f6e. 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/GBBLY1301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798d698a6f529e5f5534e4bbd130e142ca4f3d629c0591fa0b4a72368b8d14de. 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/GBBLY1301021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c71ed178cb02d35ea00d24a56e41ed379290c4b5bcb3bb476ef8a70e371a3a. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GBBLY1301024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd868b33d2806d952e374c04cbcba5bb67e8fd520dd829b2399ffcd358dbbc941. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBBLY1301028.
Very Yeah - The Directors Cut: Complete Compositions 1992 - 1996
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb7c642d6d75f05c0010f4703baf6f132e5d8faef6f9a55d38b7a8e6c922bb7. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBBTV1802555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4a63e5f152066977ab6ff307912dc42a0976d136db69215607006e9566404b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GBBTV1802556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5f29d969580d46a5ed1392867f9ee828e0ca9eb32e67d2e137b020413311c8. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBBLY1301025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce701e75b090054592fb8e1f06e7ecbaaecc428a5161148a7b43fcc86470b8d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBBLY1301000.