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 0x9b598661239c8b6c9b032c0f3d06efb2d009c2b7b2b305c8bd5d691ec57738af. 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/87e27bd8-5eb3-4228-8482-247e469f1c0b.json and https://artists.proofprofile.net/proofs/artist/87e27bd8-5eb3-4228-8482-247e469f1c0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
First Come, First Served (Instrumentals)
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 0x8ef168975892f753771bfbec05952ca98b2358d966bae82fea6d2be63c6c6525. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/US85G0030091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e3751f26bb45ad6785efa9585578b8d79231c48d6a2d6f927d9bd1ecaa20e7. 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/US85G0030094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2c9da10979f19ceb8bf031f7897af44c86cb7fd5571c4f27d0c186e2159dca. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/US85G0030095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2a33bc581d63ed6c2260b1c82bb78abf5f8579ee4b322a0b7236a8d00a55fd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:34:35Z), 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/US85G0030096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fcc07224d3201af926e59c745bf093ece18711ed0063e661034063533c71ac. 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/US85G0030097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb434876ed80c0db4dccb302c38df4400a76d4fa553f40333cd64e134a6e7159. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/US85G0030098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30438d1acf1adf916c3a8c466ed35aaacc3fe15292de18ecc1da5799ed725ba. 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/US85G0300910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a46a8e63de87156ba807cc13cfc01eba2c9854b52ee2c4364a78911517b0bb. 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/US85G0300911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2775a0b9a4b1354bab179dfcd9fb60314357a880041f59657ce093952921bd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:04:18Z), 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/US85G0300912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c4ee6bf4ec6d404a5745feaa2f8103c4582f3c5d7011213cb1b4d33f2f6e28. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US85G0300913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1c8a6a2e9427fca54496b91a1c3c06661c28e46ab50e1fe07eee7aee3eb3b1. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:24Z), 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/US85G0300914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e183d8a89ebfc239fe032cae0aaccf557c8de4b72021722c6c449e4a669b86. 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/US85G0300917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39feea70a7af064553dfbd9d57d05e3c523cec6d4e2f1a5524875e46b3388877. 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/US85G0300919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd9e56b66ef56fb036609fa3177d5ffbc18667dcacb993aac2d68e5f4bfc637. 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/US85G8301902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449e0835360777afd842d7f8cd8889bcca8467f50a1f29b0903eba037f04fe7c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/US85G8301906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557dd69d96c7e1ab2e8287815fc1dff2f41a2500105e28914923103e8d5c1ab8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US85G8301914.