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 0x0ad5e80171146d1a8e1a9e3287e43e136793f00d6f7f4602a4a1e3e0e6bc4deb. 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/fbe61273-2e27-4e20-8a99-1ff5fec54790.json and https://artists.proofprofile.net/proofs/artist/fbe61273-2e27-4e20-8a99-1ff5fec54790.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 0x9287b8fa8a162cbcd39075495a751106dd2c323c8567b39acf4bc401f087c853. 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/QZHN52079535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b8ed341b27da500b93ce4b62885154fefbd534c71eba38a04e5356c6429787. 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/QZK6G2044990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe153db0f937dfcf3b4b481da762b886eda1cf2e82549bb59e7303d6ce4e88141. 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/QZDA82150939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5160acac458468fab2c2888352df3813af61771a89762ffab30d1f9e36bdde5b. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZDA82150941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c4b12b7ba71307030c37b0a772ef58d9e92ae317f406cb2131847c6319c61a. 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/QZDA82150943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd788ef9174bd6ba9ab1e97988f4f0b56428f0746cab6a990af58e5e0e7b61cb5. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZDA82150944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54859afb074c972e9960f59fed752ba232dfe6b9b5b7ef74375fbb1e5530dd9c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZMEM2173460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588bd5d4e516ceb12290317d6d9650b40d8d5a46067f6f4a206cfc8adf24a3f9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:26Z), 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/QZHNC2310251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a329a620744e76049a0feafdda13dbb34585e2c68a1175efda6f48f4bedf707. 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/QZMEN2397593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc4665eab96f56c2723d2e379fa71ca7cd45c956f6e0c6cda42309d803e65e7. 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/QZTB92346724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d01e668d15e72b7c768726d7a955bb1ba806353f00034d4e7fb6857b6221fb7. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZHN42495016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021c89e82c979fa5f8eca8e7c9b1b099ad5751860b4f3456b5c9bcc987a5dbe2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZNWS2424724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d7581bc98faf5726794dbe9855aab6ed67b2e03b2ee99c08cb5f56b21e2c32. 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/QZTBC2464463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257aa585577cfe3886f70754ed54607b9a2fb9df81342be397201e3c0dce9816. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZTBC2464464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc9e7c57d964a72d5d2d964ebefd97724b5c904fb024ca811afdc8a56f1175c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTBC2464465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a5cd8e3d1ccd2738e70aa916d5d34a7cdabecb57df1bef91dc3f205484045c. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZWFW2437340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b057020e71c85dcddc3408a0cc574b44e6cedf25ae64b638863383617da5d6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRIDO2416357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22013888958e0e86a9cce72073624c3b275a7664cbd194cece19bcd68e5fda72. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZZ7K2597707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbe11f85650303d7ed800f4657ff566e23fdaa6bd1b2551662fc0d0e412f147. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7K2597708.