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 0x525682913af86643a4ea29e3b0f45a6dceef593f625529458351ec2955cac242. 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/7ead9d96-36a0-4ad1-bf52-f00909140836.json and https://artists.proofprofile.net/proofs/artist/7ead9d96-36a0-4ad1-bf52-f00909140836.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 0xb3822cebd5c928579a773fdec5f17a1fb803381ab78bef5839cec0178f35aa28. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TR0510601841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfbb46a6c26f824b3ef6fda9541be1cb3fa87b95ecede82ea22be49121264af. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:27Z), 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/TR0510601845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf305de1166133c7ecb2ab2005bdcbb3a1135e96a6cda44f832f717477f749643. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TR0510601846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc8e6520c6e9f8e8457897956aa7bb83011c702f0d6905c8004d6671575523d. 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/TR0510601848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9395f8aa687dcf2fbbd2905b78e1083b70e0fcbabc8f9036b2e4ae3d4ba6ce20. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:48:58Z), 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/TR0510601850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3f6346d76f9cf5ee388a2591f542b7d5078068074866d08428148f4b30d0d5. 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/TR0510902288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aa4a892c4e3ea05f24584c258423ee9201082ddd1b2c5782697923be6dd7e4. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/TR0510902290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbf2f6271e02b99c5dec9c7d08f393b335b8fed5c6b5aaf3614a6f824395b8f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TR0510902295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a946af9d1b93c8d1aceba70e03a267ba56f70bd38db2b920916c02d634f9a11. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/TR0511303063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc24f01d2a440a2fcc4956d0e71aa2bbb34295c3b0852aa2bbfefac16f5271b. 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/TR0511303066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5118bc98a220c023626b300b6f3fd771f8ddbf7ca5c45560362180813b5425b. 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/TR0511303067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c49e5554f31a95af344857a49f87f1df39f47252648c26bcd44355aa532d1cd. 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/TR0511303068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c82760d25aa040baf89abf0584401b6fef8d2932215776c2c4201a5a30ff44b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE6I32031998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a1a941ff36cd4f6028c723730bccd70500014034f5a73343b5bac25d41bb08. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6I32031999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963d899c0c122cc50237702e52ba204da2dcdd5720dbe21ada627d184674a0ff. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE6I32032000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5b064b560bf3b99e925398596231bfa7fbb425d51cbe94f562e1179d0d9878. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/SE6I32032002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bc68e604f94d371bcb6d3e76ac0a5b0acfe7f09ba5c12c00554d54d6571884. 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/SE6I32032001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb36ee2cb1fbf41257a9cbfd7c049011ebd602ff7d3827574361af1cd43ada0. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/SE5BU2070702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b43ef9c885512170466fbcec2d0936cb6e03336928134e1f6155407c39b172. 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/SE6A92190836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca5cdbb075fa19253c2e9a1f34a678f10f0b418f39d98c57e549fd01b7e6199. 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/SE6A92190837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3719d98ee17897a3d563fa61ffe5bf7c921befca9a3e3640dd2fa89b7cdd1fd4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:01Z), 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/SE6A92190838.