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 0x4151c0599debb810ab0fa390bf75c5247c4568c666a412776cb9a42da4bd4816. 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/91271b72-1e16-4795-b912-f4d912de8e16.json and https://artists.proofprofile.net/proofs/artist/91271b72-1e16-4795-b912-f4d912de8e16.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x782c2f468ba7ca303e65386b4a1b458e6c9ea9718b7c2b291f4b27b945cc04b2. 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/QZNWW2008464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadc4260fe7ef40edf8b681ae9382e5873d7bd0a82140e86d7ab7fca4272e97f. 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/QZNWW2008465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5c3403ee2e31d7bb43a88b24ce56064c767425cc2ef3c7f2dbf0326cbd1c47. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZPLR2198379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e942b10729ccadd22d707fd5456a51a13b4bad698910b38f0f42132505054b. 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/QZPLR2198380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af39350aeb05a6cef95410a848bf2cdafe2e20c0042c0523f66e2a525a5f7c3. 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/QZFYZ2283393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa641e84b30be28ec16e7ddbe636b13a816a58550dade2973d53a78c22490b2. 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/QZDA52210675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa641e84b30be28ec16e7ddbe636b13a816a58550dade2973d53a78c22490b2. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:00:38Z), 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/QZDA52210675.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ccfc5cbf12064c0b230b0884fb817b1f21b1a571c29a42fac0b78d7555fa96. 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/QZHN42225915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f7d0a4949dcb82dbdbc573cc7934bd8f8f3c541ae0027f8138d8d8d60317bf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN52200320.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de2a1a9a10e9e9ce4d02d91005607629458e1b65d4d4b2b64fb807d0aa409ec. 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/QZFZ32350997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aff147504d0b472786d1f0f14aec029d4da67347f6b14998d4ea3a91782af9. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFZ32350999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc10ce69c2448172ea4d6ec911b32fc21efcac4bebe94bcb74816d5a5da838c. 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/QZES52394556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98903289a76580b14fc351a0c2d1b819b43d1377d18193462be038bd03d45178. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPLR2334783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6a2d3f4856f80ccd49cc7ac63e2a572218a86264154a99d812cee5e8bbcd67. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZPLR2334785.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db7a408a1f05f8eee70a9bdc33a8f34bd1c11cccfeddf9530d41b228b25ce15. 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/QZZ7N2423163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff74fd9c9792f5ccd5b4caa3cc731d4a14166c7e91d916ec2d9c78d9fdd0a198. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTBE2548681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcad636e43fc347ff8a0bd210ffeb043f23d0d0084e05a057e246d975ee13c02. 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/SGW502508214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5510e8f36b3954508ce8f7548958691c8f61b02047cd5604eb3bd95edb196a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:03:59Z), 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/SGW502503107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1f47f9dc762f3024555fe4211accb8e3f452e936fed4248e899b80a9aeae79. 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/SGW502504662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5b4b23fc79e2b1e9ae5c19b817fff995390867affe5388f5d1f071c507675f. 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/SGW502500254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70630730724b2b9cc42707c36dd7274f6f06a58ac04283822a4ef2acf83d99af. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SGW502503899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392516dcbd9ae247f6621c97f935e387a1ec212565d5ac80f8575287b5ab33c5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SGW502503947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072df64a34146f04a43471e9c0645b6e4420361575c4242205c67c59ab2d1e32. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:32Z), 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/SGW502505017.