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 0xc62d4a3e290491b1bc5281f20b725fab930b4c24dc7a0d02df93d33d8d93d6db. 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/68017ec2-3436-4cc9-8c42-dc65d1e1b482.json and https://artists.proofprofile.net/proofs/artist/68017ec2-3436-4cc9-8c42-dc65d1e1b482.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 0x2487f0a4c8fb280c078984c476e2d776e7a5b9c49a8f7369fb784a8afbe088a6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX53U2591858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13267522f910cb4d40c361c1e536cc2753d72aa4bab3ce2b41bc2064c050ce45. 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/GX53U2591859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f492f103942f3fffb96e620c2b8f1112c3406f8cfc0b86f0006b113c0b4896d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GX53U2591860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f201931e4cef67c00109def0b97ab09adbc35347066ed03356a094f6a01b8f7. 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/GX53U2591861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9552fbb6f2e27fafc9da94d69515a06dc4b01c7e13c9bf5c23cad79fc7b7f4d8. 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/GX53U2591862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49205cedc531ce6e7f47e4486b21375cd74f761e2140dbaf81dca18cceb3a2a3. 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/GX53U2591863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1307fe05e2b3c176da8413986a47c271db7103c622bf78855ff167c125ba4bdf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GX53U2591864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e639f3d6d387122e771ae9eb8a49b5ff3748a215ee3764e80d9981a645ca57. 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/GX53U2591865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161eefcfca6768e659ba16767f52c785e84bde887b94c2b6c8439fba3b41b4e3. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GXHAF2598527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30715c631c79a41f3d3914062b46ac77b04851a3426882201b9b44d508f7bfd2. 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/GXHAF2598528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1468a6c43bdac4e329513bdbf3bafc4b353c489803bd06991fe410211892c327. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:23:00Z), 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/GXHAF2598529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5972efe3efeec05b4c743aad2f676b977acf46b7f2d7e85b15a0177360b39750. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GXHAF2598530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cdae68f8cf2d7f18bac9937a9ac2266ced088fb1832d8c67ad20c9be3e4698. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:56:40Z), 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/GXHAF2598531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773786d3f668cb517dd45a1f86af00801a2b1d90ea474228a8e833ddd08c8015. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:00Z), 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/GXHAF2598532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c81aea9eec78b710b804fa1ededef7614892634fdaf08cd9e6137574ba5ec5. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GXHAF2598534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef772ddb3578c25a2c6feaec83e6b143bcff0952729d9fbf842ce3b57ce16dd2. 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/GXHAF2598535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0761a7aaa34900aa5d5b24d925c2381cb52b3a830ede3e8b34d47d771e28f0. 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/GXHAF2598536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b4fb349bf33aa54cd14b2b5ce7e13a8e2b6e2e1df9479330e722604ce9d7ca. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:36:10Z), 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/GXHAF2598537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017005f43bdacfb30014374016117a7636c58328c6bfc7fa881d73774c3236af. 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/GXHAF2598538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d4e02e8310fd2f165f2374de625fcef1d017923c1d2d43b18ec5a91ade1e27. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GXHAF2598539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfaacbce3e411cb13a382e4e2a1869b1fd56c124c77ad03ed1842c222cb6c89. 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/GXHAF2598541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0166abd1ae1aa9310a1c5f27ce1119a0c6a3393fc9a02029c85102c6781d2470. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GXHAF2598542.