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 0x0bf4156d99b31ce59e79b24edeb83fec83eec8e2a878d82ff9a2335715082616. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52b1319e-16f3-45a2-8287-cd0c9dd95c83.json and https://artists.proofprofile.net/proofs/artist/52b1319e-16f3-45a2-8287-cd0c9dd95c83.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 0x48228f4970245e414827c9a1d9aedc6c1a3dc016ca09523efa718574878a7ea8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/INL492200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad87f2afc11650818ce49fab777fee54d09dd9829942cc8eb2cadc4af98ae41. 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/INL492301213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e420498d4d4108cb4444cc81c6427eae6909e3b435f8cd46dda1a45a775efc. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:24:07Z), 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/INN632300724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc627f0cc930625da2fe39f7e68646033fab37d2cabd4c1f0b7d0975afcfd4f. 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/INN632300718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701036234346439659ba52d660098953961c927625dab0f841fe62757251bdac. 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/INL492301313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b2cbefd14e9778f71c3ce187a9d7dc280c34e1ba827c2aef317c919da89c4. 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/INL492301408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b2df57a2c0f77bc78f226339ea08c775c8499488d3c8af4bba08523b72acd1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/INN632300914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a89cb21ca6a242f94aeb89b4df13e9e72aecf31faf340be3888a243a18e963e. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:31:08Z), 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/INL492400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472a3c95307345cb776823337d7ab7d24d3fe4ea491e9a2ec9d7d5cb17e14d36. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/INL492400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6821776cbb9006187e889541227cd5e4a50a40c1d7f2a07c6c2d082cdb2144d. 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/INN632400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72999e08147faec9d13e3f3e3be146cdacd16673f1623c3f34fde9da20449ec. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:35Z), 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/DGA0T2434631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52414bceaa16009f7c2754dc32e311b17911016fd800a9ac542171e6dae701a. 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/INL492400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48570dc597b84914263730c8ca28e052e04c4eb0bd1825712100dde9d2fefecb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/INL492400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edfb8c3f04b66648f012bac74eb3fecc68d49758fee7f0972d739e4eecc93fb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:51:22Z), 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/INW132418089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f72f5204fcac2cce2b917de8bc205c171c1354641154b8d2907ee008b774352. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:20:12Z), 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/INN632400601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeed07fbd09858d3ebd7f34f60eaf4564086a71bd3f94b82c732b4f41141ff8. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/TCAIM2488647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f0c8dfc356be046910e615f198fa3040ff30d3d3b36711b1284cbaf327ad19. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/TCAIM2407181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb9dcaa736a16063903ff0fa51e2d8d4d9a31f8707697a091418ca1e9eefafc. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAIM2409464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf03f5c3796f509a7181498569db862bc1dfb84d4c1c42cc62d7bbd165165e3. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCAIM2409721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43698d298c9e76984ade89f52b721501cfab72078f9a7e9f38809b53abad3fa7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:55:17Z), 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/TCAIN2407411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e164884c547742a4b911da3efbe229eb8103384f8147823f38e2c9a7e68dd2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAIN2465948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ae33c34ca766c1d34df929e2b62e04bf9096f5fef27176179ef2ed13806550. 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/INN632400856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a9c0ef689d11a1bf5627738a9700ab7a850e1b7eb2ee0b2c195c3d8eb54ca8. 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/DGA0T2434633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb52c0dd9f7a71f0b5aaf7cef0bf77dd84602c2c43c2ab7085cd3b2bda1925b3. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/NPA0D2438430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d6de264c5bf2e432db835e0822015392b0eb660f8830ed22382233021037c. 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/DGA0T2434634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b2d9178ea4775c0b04f9b9b486c5d0aea58f8594c4c1f535938e9f737aecf3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAJD2413240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b28c88620ef60869b3696220fef9ac617324554ca7d5b03ca61466aa62a1a7. 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/TCAJJ2577564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1e3487508a18b8f417d212dbac942f2a3ecd12ef52051980345a08acfea998. 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/INN632500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ef1f027fa5d886e21ac417ee8b43ecf1f6e48a772bff8853bf655923d89995. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:42:21Z), 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/INN632500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb2031a5982e6ff4891641a8ea68998873767f7f75f06df6845f9c57d582165. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/INN632500239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff5cd11e7419a527bab7553b1f5142c6a4fb953ec156aa66d68dc3c9964017e. 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/FRX202595218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d28ba2442b08adf0ff8fefb4076025060ba1b07e5efa899c63656e4969deaf. 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/INM8T2501010.