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 0xdb60a44b5b9ab58875a825a057761a370ef0e38331fcabcf54406d0430d60825. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a2ebd7d-7264-421e-9590-a8f4101d9df7.json and https://artists.proofprofile.net/proofs/artist/1a2ebd7d-7264-421e-9590-a8f4101d9df7.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 0xe811b97ecbb75f6a16ca5a62d3bfccaaec2d623de34cd3bb6b4224eae36a2ea3. 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/TCAJN2536349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be84f9bd1e16a37124d007dfeafafc7f57719548d00018dcd95d3dbf8c05659. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:33Z), 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/TCAJN2536441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cbefd4f9f7e9a92ded1bba9a7b6bfd01fe6c774bd35f4c586319e3c7b14e53. 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/TCAJN2536447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676047018181f23e608574a5c6cac5eff3940e203b4a562d8ea32d95c2e0818e. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:48:56Z), 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/TCAJO2536458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b82a3d2774cebd66ed4e0316ef23caf9bdc100661352ce73a4f495dc2cf373. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAJN2536466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7a07d4e73d212787f0306ef3704efef71724d424d83f8a391b9ab985d828b0. 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/TCAJN2536471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b50ae2f8f2557e3cf1d65dcb78429bfc8bbc94d4e664c1f9101835c6ce1929. 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/TCAJO2536478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dbb0762208a98951a65c9ebe5d482978efd3062b2ff1138bf2c7e92fd0b0e0. 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/TCAJO2536489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c5cf9c460b9af58ce3755b3fbe916953b730c0e06e7a99e91ad313fa4ba5cf. 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/TCAJN2536491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aa695aa19139f7546a9ab69b89f2503d1c6aef8b65eb0b3e6183875d59c4e2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJT2527031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304259adaaa894170cb7d8d9790e9eebd0f27c3736722a261d17158610eca68f. 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/TCAJS2527033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7450138b6f4ab4eeaa8a36a045730f9d4a040d742b7c0fdf52b6f5e229cfc0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAJS2527037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6143de9955d5cb0ad5ceec6159bccf86533fdfee50bcd73e3e632f007ae9e338. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAJT2527041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7894eeef7ae42ac842e355fe377527d078da6a12d0a146bf5a781ecd42b06c9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJT2527049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e425238ffc18a255b2c3801b974780107fcc96fd72e4ffd1a6edf9330381338. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJT2527053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2483506401ba5e03be7c7fc7888e3c3f164f845439bf599f23ef9606247b748c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJS2527056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b60bad200d0f75a527856b84450c3ee0cac7b6c1838e13cf0b8bc3ab61f89ad. 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/TCAJS2527058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5486b55926919f0bcfbc8b3b6e19b00a2e80d037be3ba3f3d856c7001ab454. 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/TCAJS2527060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94acdf8009a6e7034a6aad67adbbf1a7398c4453a319ebaace17601b2a2d5b7b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAJS2527075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c13f75367b5b77d7ff9ae082beae63d4e9f4ca45d0938755d995afeeefcc329. 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/TCAJT2527077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4dc84c4350f7a00a20f2380c1b1e64e4f91a3bb6a97743250c9bc040bf898c. 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/TCAJS2527081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1402f85f2a58f740e7220638a9b3b68c6e31246a9ee1227f7d549e4072388998. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAJT2527082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf85b2220f8c266419dc1062ccb1a9b6d7646ab30258453eecd419b26fc1cecf. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJT2527088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14287b39ff87878549192a7f5ca85df47091f6c45eeb89bbfad8f185489c7583. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAJS2527095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8ba8eabf10cc45a99e9eaed3730adc9a789bd73d6ae94723b953eabfbb385c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJT2527099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5fdec708792eb27667d130e63f86ac0087db09d60dd40a537378e7916edca3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJS2527102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e654b08fd9be15f2ae1b70d9052804afe09ab43d0d3c4948bed6630dda1863a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJS2527108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab99b087fe3bbae3f596942dc3e818ae320beb67bffe5d1011dbf16459ccb0c4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAJS2527112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fd078da1e23b5df3c45807ff93990eb87aca5bb06d699f975f8da8f06929f5. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TCAJS2527117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb4762d51d4bc6b0e540686d31897fad8b538520c5468e2335bac310bab5377. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:30:30Z), 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/TCAJS2527122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d92238d38be99cc46cba9334e6dd1a9f845aaa42d471cea9329e1610a1192b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJS2527124.