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 0xdbc0966e5fd368423260446f5dc8f16b8d2a42f94834461b4244dbd3bf441676. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1729ff6-19c1-4380-8390-f3ddb7a61fcb.json and https://artists.proofprofile.net/proofs/artist/d1729ff6-19c1-4380-8390-f3ddb7a61fcb.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 0x78c4285551a459d68d4135620c3f39225e3d440dd82d046caf282c975812e6fc. 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/ITP412001418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9a0b55fc83503b33a3a32fb42c470c4e08d8fb43d7617ac146131708c9e1cf. 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/ITP412001419.
The Butterfly / Golden Stud / The Man Of The House
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe716aa1793b6ab636522ffdf526377c0c1b40e16a9d19ce81ec40b847b94df2a. 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/ITP412001421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe9d86caafd52f51c57800fe5c09bc54db518e5195eed268ebf6680a66afedb. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:33:35Z), 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/ITP412001422.
Glasgow Reel / Aaron's Key / Banshee Reel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7463a74b3df68109da87e5dadf5147861e213f1bc255ebcc6d3809fcd0a1483c. 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/ITP412001425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ab7bde60be93747987a1e00a064ed9948f2faa423f2e0b6f54aa177d943181. 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/ITP412101570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85dc28febb5e1a54cae10cd56ebe224c35c99cc19ce4eefa0d3a6a6953b9503. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/ITP412101571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a38977f9b9e1a978e0a4da42993e16ed74891e8f83694d686deb893155e797f. 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/ITP412201701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bca7d692d76f782e90f5688289247666a5e7ee755118250953c115e57f9fdc1. 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/ITP412201753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75a9667480cffc263df1cc14b21a392a5ca7d4f70c4ccfaa32051350b749ba7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:19Z), 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/ITP412301779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bee5a7d46035cd2366f7b8b23e76a09f8de17adcb8141aeb62a2ba03d7f556f. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:38:47Z), 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/ITP412301780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22acb2ed6a7d6789bdb30faf75e2c9ec8ed545b2e7f0595d3dffff68de0c429. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ITP412502041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad920056f88902cbbd7f97a5d5d9bfbca35b30c9271be5d2208ee8f9bdd221c3. 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/ITP412502042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea2b14954ae19daa7fe7c5f6b935ff06b5ec4ef1044225d3180c2036013608a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITP412502043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97065ff86f9cb754ec2bb5fd1e38cea619f711aa5f46b1409a0c9a3c5ca0a795. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:39Z), 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/ITP412502044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cadb2358ecb4a3d08673eeb454783f6bb084b7f04295a5689f1b2c961589d8. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ITP412502045.