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 0x1836d1f51ffefc4e53536631cee662bd357ff2daeebe552d146b58f4f7bdc968. 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/dda282fe-4ed7-4182-a4a8-ede2af44ab07.json and https://artists.proofprofile.net/proofs/artist/dda282fe-4ed7-4182-a4a8-ede2af44ab07.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 0x9ed1d82169dd7fc021dd4c387a1ea465a251d7bde48d3bf7f1529676465f2b1d. 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/QM3DF2100884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c195823e88f91576c4dca19a63348dca42085c834e3862ec8c26ed2d0e68b6. 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/DEQ022119182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acbfbeed21c58396fdda151c8e179bb13af7aa7b67b1e1016929a93177a8a92. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GBLV62120445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337a42203ab85a44d4858e504ec98bbefdf6e40a814b06e81e18ec40d70c1be2. 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/US3DF2253182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04afe38968b4e923745c1f57cc2e20ef3af095518a13e3327b1790a503f7e03. 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/GBPS84039879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bfc8e804be16d2162083d2d7984f49cd2667231f75eacbcbe84841d2d49c06. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:45:40Z), 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/DEQ022273095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ca442b013111b081f8cad3337c9ddc8104f52b8f575fa2e31f6ad4e6c1e8c3. 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/USANG2228873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d4d15a9278ffddb93edbb1007f71b2412eb81ac380d1eb28c464865a056d89. 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/QZR8F2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03959d3ef962960e14d8f60d88467206d49d693a4bff93252d7d0bff51bf5cf3. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:58:27Z), 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/QM3DF2203100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8f0ba5744ac8db43ac6e45471f1709272be1c9eb30c86bc78c03788918bf5e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:13:06Z), 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/QM3DF2203103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae8bc1c36e1e3b49c8e955131dcf900311442f2aba58e840c1f939a8a949c5c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA092358155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4ad885bfe2156f1f9a4e5a5ffe9418a9759a4aab961cd48d19ed01fff562d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMANG2219858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ddfdcb11ea42cfaaf3a78868c85c347ef819a1a342e1d8b2a04ddb4bfc4244. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US3DF2337015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276c8653ffe242cf8af541874d47a778f06e629d13623ca8de25ef2a9ba0b8a9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:25Z), 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/US3DF2404053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa542677f510e960625984546e6f0b3c67f83c5624a37a38e122a65a131acba. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FRX452482241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb88d157106af97b5a5cbd8f6461fdc531428601aabf8882672448e37474a63c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:16Z), 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/DEH742426870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cac150c7a763954f1b18beaf878fe5da87344a9fc3a20e7a40717c09b41b0e8. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:27:35Z), 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/CH7812412589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491719025b7c7edef678ce48e679353f83f33c8bb1b44b7a645e26ff18558b3b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3DF2226865.
Pieces of Greece: On The Radar Greece, Vol.5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336334b515fc5c9cf8360367d166809ff0c9384f57b2c85f65fe35f265e21efa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMANG2213246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4ad885bfe2156f1f9a4e5a5ffe9418a9759a4aab961cd48d19ed01fff562d3. 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/QMANG2219858.