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 0x513b93ca7ddbf316b279676e576cf2c660c61b5839027bf2115823c6ad486a5c. 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/0bb7bf2a-3f77-4a0a-88e4-9099317a01e6.json and https://artists.proofprofile.net/proofs/artist/0bb7bf2a-3f77-4a0a-88e4-9099317a01e6.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 0x1bdb88b6731d6c0fd279255cc49a00e9ed3d8d06758fdadb1fcc151605b3fc8d. 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/BKAWA2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22929aec9b21e79b5d36640f76ca20fab5a3ac41c786c8724bf05e022ac21105. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BKAWA2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd1341cc760fb5b04c52dbf700380d906428e8b725ccadc29a18067e0fa2a7d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BKAWA2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1c18e7db66d708bd2fb8a8b1e4a53cdf71e3be1cf2bee46e4987ae35c3e0e3. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:20Z), 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/BKAWA2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dbfa7b46cefb59fcaab0221594436b0befee7b1b59d847aacda3b7071baedd. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BKAWA2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd250db57b5edcb9ce59a6a511101a3ba397b31d594a156bb7d955915e3f7bd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BKAWA2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb759c01b8f50286cb2d22441040f917d37736d9303778ccb0af2c3c03ea5928f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/BKAWA2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78252b859580321c89bd17901bd938562ed2b2693a99d0e9852d62d37e5d8ff. 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/BKAWA2400215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1951e9347e10e7315e56a12aa10c2006016f8acecd983c467eda58ed15b4711e. 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/BKAWA2400217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8a93e0d65c3439bccf43320f8aa0c5a76f02a7a2fdb29168dfda42a5078305. 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/BKAWA2400229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38a5c28bd4f94472cbdfac74c04f93a5625466d4bef24136ed5a668b0de9e59. 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/BKAWA2400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80f115ea4e8780a35e0f3c1e804c751096584ee74d794b72bd39ba46918a3b2. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:49Z), 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/BKAWA2400232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac355c67981852eb33593330ce606f8b136d773cf6d46889f97ad1702e19a97c. 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/BKAWA2400233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0fc707a13d36fddce78d92b68ce7d913105c608a27f7ca8c1e7a630686c89b. 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/BKAWA2400236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2045cf98c04147da20298a7f0b88555f2c2ee9e10fe682fc85f794a3a86736b. 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/BKAWA2400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9226e98db01e635ce9639e40fcdd0269918aceed17dd8e7b7c8fdf927903e2e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BKAWA2400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f7afc4b4a932b9c91178e49bc4ad2b7203e3053a0e8935b79332ed5ccd9468. 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/BKAWA2400228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b671bf072e13971e7aae57a048f77dd429a59802ab65264bae155e6a901c33. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BKAWA2400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d73a023f289554ce26125b5ed18f349db7b37850364ee2fc40c11e6941d544. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/BKAWA2500071.