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 0xa77193ef01cb0eb2cbe455fc8fbf6c9338a371129a9a2d35976aacc3923ba29b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdad0d7f-2fd8-4fdc-bd58-0f425598c578.json and https://artists.proofprofile.net/proofs/artist/fdad0d7f-2fd8-4fdc-bd58-0f425598c578.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 0x778c4c7a415af82a5e24e6c32fa52db63d45be010e854c782b89934b9cfcca33. 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/CA5KR2022198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8818e1bddaa7b870c7bc8278261f5f4106dcfa19948dd47347ec3cf8cb4cc61b. 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/CA5KR2022199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8566eee65931b5df7d9c56ae6a338f7c1e92fbef866af438a6bd348c760ed0e9. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:59:39Z), 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/CA5KR2022201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ef1be21688b96acdc0e5ced1a4a13f27bc9bef437a70f1ed7c8102c22701c7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:51:10Z), 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/CA5KR2022202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c45aeabf6c1a421b92809bca0d1b50047c7b75e00060323d20db0432fc3cbc9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CA5KR2022203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c01a55a58f863a98915cd9f4e9041fd929bbfd69cfb7c0ee97a69d74897568. 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/CA5KR2022204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f90f8b123c303ffc7c19836e878903af0e38db664c659fc6ad3173fb975e7a. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/CA5KR2022205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701522018df4ed2cee3f3807439f04fd2cf6d3934d1d1112823ee5d792241423. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/CA5KR2022206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3a34049bf2490b44f49b7f86871d74a55fe2791565a55620a7d18f09fa15bf. 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/CA5KR2022208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5c4e1cadf5e94c8433e7202347eb7dd68477ff29fdb787f3aaea44b9b41f9c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CA5KR2022209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832f3459177b1ff2dbe310cba9e2757e4c88895a5faf11844fa2ab2015872460. 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/CA5KR2022213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f43961b2d0ddecc7aaad35d54d8d607b281016531bd0a284c2bf3f318704362. 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/CA5KR2022172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b0ba3b9ac925cd82fc99c801253582dd8443ac8c3333cbc6280f3378f3eb0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CA5KR2022175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad21347dd4702d44583e77210c54897abc67577479f22930ef158b9704ce2b6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CA5KR2022176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd41d1c98abe34abd93b20a1fc0aa5df7a572e7096064b7c591911b23e32a01a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR2022177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cbacfdf9f1c90514017c20535e3b2448bf835ac49b15ed1206252b739569d7. 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/CA5KR2022179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea56454e636c86b50ff3539929afa6ef4473d2a5a18841976d70be9c75f5a117. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/CA5KR2022180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc323ac869a74597bfa2b89722d1edb7d0480ca2c20b6106c43858cbac77ee18a. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/CA5KR2022181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bb852e17a80aa8d617019a356bf205799f33a0d59f4a03d5dd9ba511c9597f. 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/CA5KR2022183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374d66e1072c4b2e0f20f040b74fb9dfb2c02ccbeabee7e4d0826c0456076e7c. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/CA5KR2022184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db8369b97ee9274e07a5048ab2599b35431573e685b26448e4ee343dabaa6ee. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CA5KR2022242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba9fbc786cb3a95e7ea94aa4dec5ffbff411ece77851a4c115051bc761f1d8e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/CA5KR2022246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe093b28d28252b671a7ee54d263c24fce47fb0b468729ee0627a7d90d1842d. 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/CA5KR2022249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e6ddc4983635b833dcce9e0cad8c24a3180aa0356f3d3d2c0bcf669a675f3a. 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/QZXLZ2321457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc3513dccf561f1c72684ee65fa9a3eb6b42355bdf12e1be1d5fa4354ce65e8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:07:43Z), 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/QZXLZ2321470.