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 0xa9a5866cc9cfda00c96459e28083fa4d87f966a3cb731411a1cb7075386b6b32. 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/e33c8be5-893b-4a77-959f-aa6f33fe0461.json and https://artists.proofprofile.net/proofs/artist/e33c8be5-893b-4a77-959f-aa6f33fe0461.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 0x11be3716a18f9b6c9f4c9133e89590011b12e93244c4e6e2d8ed890bb57d8a50. 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/NLLP61500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cec6a14d7cdc8731277f6884a1d586c756bb1685c7be23219774a016a1af340. 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/NLLP61500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4946a4881c3c640db474f22a56c7b76f53bd74cec7ac15b98d22e83c0e37530f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLLP61500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba119e1c887c6c658ef67dc98c7a10dfd8238c973955a9c8cdb6f57771d63ca. 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/NLLP61500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617cf2bee23d1dd0925714ecd8bc6d4cde2e532964d5e36f12cda17ba8a57588. 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/NLSB72000770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f80add1a6e7eed7d39cca198ba3b617884e914490c23794e62a0d0eb4949986. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:59:25Z), 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/NLSB72000712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226f9242129b58066bd77a60d5f8d297ef606ef4fef0de10a45ee93ce2de1b7e. 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/NLSB72000714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5a85ed7fb4660ab6a5fad0d95f6a2ddfe00071e0d78c35429247cad03a44e3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:56:37Z), 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/NLSB72000715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85320f391cec54d2640db8cd1837f4b8af26765b1fdba26efc7598c2c6e06bb4. 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/NLSB72000719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a7c9755e3d47be623a8f71bd9fe2f253ad884e32ecb9ab06da8d881652800d. 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/NLSB72300408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6080da680fb395309e391f655c925949710f9d4b80d72c269318b5e8b47c0196. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:37Z), 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/NLSB72300409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1081aaa9f635de09e7924f62e8f1f8941c91450059715bf56b65784878d765a8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:02:54Z), 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/NLSB72300411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885525171879e3d867a9b741e7bc900b9e822202f2e771fe2fd06ad72715db80. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:58:29Z), 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/NLSB72300404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556e2fe27cb100a900c051574dc6391fd2125ca03b8c4a6401b68d1583bcdcf5. 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/NLSB72300303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0f0479b776db24819914d6d807bf284b8434abbc98c48a94878d843dc30563. 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/NLSB72300415.
Als Jij Niet Voor Me Gaat Dan Ben Ik Weg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f52823683a44e34b75e5ca282e5f127ab2aaa7473391a39b6d03d2a9ff9285. 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/NLSB72300416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34058efee7b0a6f4d475259dd06271da1e3fcb94b934c3813491bb091020fea. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:12:11Z), 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/NLSB72300417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa79bcba1c658009062013952490a6c2dcc686d9cb47cf6cd56d119b8ee3dbb3. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/NLV4U2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26849af598bd486c8fefe836e3227beb3188390965c0b8fa3dddde7d44fbd654. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/NLB602400312.