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 0x5c443c636cbc1fcca410588cff853dab27469d0356a7c734d36fa617ff613734. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a22db20a-a872-4d62-824c-89a478aabddd.json and https://artists.proofprofile.net/proofs/artist/a22db20a-a872-4d62-824c-89a478aabddd.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 0xb15c30d83ff4d94bfb5607b6fa1e5413e35e0514ad3764fc5d0560ce29bda74d. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ATBK71201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2a9903d75d7e3a7c8418d0a865e615f66f3850883f4932c803bd159888da9e. 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/ATBK71201057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480cdd8e1301ce046abc37f05fdd8a86a58623d618afc91997e2db51faa8c9eb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ATBK71201058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487c04c0b967de71ca6bc67170116eff9059e26dee1934f39696c82a69bcf4fd. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:52Z), 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/ATBK71201059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca77b16c834f2f87c978cb48d4727883415d61740e5094af3eb48ce5667b2b45. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ATBK71201148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18835dfa4921d389e68988602cd400bf465949e6cd8368fd167f4e72fb5ea7ff. 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/ATBK71201149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0e69618fc9029e206cd1db3d6cc85cbaec713f4fb318966a24f0e9901ec6a3. 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/ATBK71201151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73620c6238725c930de3d169c202970f69c4111c02777cfe7a6dc037186254c. 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/ATBK71201348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ab59ad0cf509ebaa29e88d1df3e01bea687c17ea416be6f6c82cd88e99b088. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/ATBK71201349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5d20151c527f0f4ded2c8826eb3ca76a77b3f1143347a6b97382bfea7fd16f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ATBK71201671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b561b2757f04ff7efdd0620970019bea2d5789ed02cd645e793b5de139df573. 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/ATBK71201672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d96166c6da55cdeb53982272bab73a477f69bbac615359b1d30a90470ac894. 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/ATBK71201674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202fefb6e2187f9b7a2c130d42cc281b0e189aa3633d5ea603630894c1e1a343. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:19:39Z), 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/ATBK71201677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458b0cb77eb19df02b8514a09278630efd4782db1b8597463e08d4e93335de53. 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/ATBK71201678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f655b8e2904df306bac2ab35671ae6ebdef7270008238e4881c6861bff94e16. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ATBK71201679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb100e404f46172b358ff8c9205e1f5b3cf4fa352385d82edc0ec3f678c2565a4. 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/ATBK71201680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f1d2b89a95024d99bf60f6a474c5d2a8f32a038f93e55358d0bbe00499a756. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ATBK71201871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b16246cd3e4a367b8b4d122b685ce549ecbf8e3ee27c339581115cf5ee5ed46. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ATBK71201872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58673b17f35637292b95e661faf5964bc97eaacf5640a4895968165fc11e5e45. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/ATBK71201873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b2f93fa7a98e9b77ae1bdde0709a38655ba3356a5ebf2ea90cb36da11711f6. 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/ATBK71201874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4d392f0d5f98599707ddc9cf8e89d9c2bed57ad05df5bb7718a7f313a154cf. 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/ATBK71201875.