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 0x3508cd4b43798455b3360a73edd53b5cca79d8d93b890adbeeaef9de1767e9c4. 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/28fdd536-5489-4ac7-8da0-0d8b7e53e473.json and https://artists.proofprofile.net/proofs/artist/28fdd536-5489-4ac7-8da0-0d8b7e53e473.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 0x27bfa0337a344a67bece5c05c7369ccd3604c149aba6d5df8d33792cb8275701. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:32Z), 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/FR96X1957147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af05fd1dfaacf900d1841699e78ae17ff97b23ae79c30096abda3be1d062c0c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:35Z), 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/FR96X1957149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6391020f50368373a750e7e49c339d8247cb9fab775e1f8b75eeedba681780c4. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR96X1957150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6529945c1d116cbec3a4cc8e7c9a3614d95cf2d75942d4f06e15bcad1170712d. 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/FR96X1957151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f11b9e48d586894809a269dcf5366fd615de93a256950dc2745ef22503b5c5f. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/FR2X42177589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe91ff9f129f481d5336b1f5e635e0111158d94b2645e0a471e512c806ff57d. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/FRX202230534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c77696d1ba4328738d7a85e7c54cd15722816b9f802f52064ace82593eb718. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX202230524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18878d3d166f6600dc4abf55fc8325c608a1aa24dbd860a762dd3d757429e62f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:14:03Z), 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/FRX202238141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe91ff9f129f481d5336b1f5e635e0111158d94b2645e0a471e512c806ff57d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX202230534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc4820118c843d70cfb6ad44d2e212c114b45c52fb4e035733f18df6e5f7de5. 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/FRX202238143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b78af2bbcad543446f5193f4156165026857e0874bbb5a75a9974b20e025da. 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/QZRP42426792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ef8cffc13b75d5954490907bb3fdcc8398a8985c639db5102b5edda315016c. 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/QZNWY2471614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dfd6a4465ac4aa55ce75073f323b9c9532d4d46e10c1173e66192cc118b7a6. 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/QZPLR2531626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a39fdf2f5057f17ed82fb1c2aa2075a5df46951c6227b2efe18e5e04f6c428. 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/QZPLR2531633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cce0bdde310ae1bf151fa5e89de53fc479dc7986977e026e287eaca4c7b58d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:50:35Z), 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/QZPLR2531634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb083dd55e34293d7539b2a914ecd887a5e9955149f088a438b2da53cbd2608d9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR96X1966229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724f45d0c92a968793ad51d277ca4475adbfeb18f93c22f2e9bc581baf0430b6. 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/QZES82319768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa3a4e9173951bedfa96d3579fd79f6391c665aff377b43e42a758a82e41a16. 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/DGA052254037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74745b2f62479f0989f4ee173c8020f481a64094ba8df7c22aa96fa27f410b29. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN82539180.