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 0xf9e64e476d39c29c2298eba6890e76f1345220bab5d1f6862e8e663ec0089dfe. 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/4fd96acf-870c-49b1-84d7-e8964a474353.json and https://artists.proofprofile.net/proofs/artist/4fd96acf-870c-49b1-84d7-e8964a474353.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 0x05c605b4d15afa4cc603ce6a078e4a9903383c5296d6ba79fb642c451323d1fc. 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/QZDA62209841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb260ab7a3c5adde57530b2f9b629ca9ee2e2adc038aab9e8e866f0b20ae8e301. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:45:25Z), 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/QZES82202701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db4c4b3bfa8fcec8ab67dcb8a4e59c0e4f56fa1a4e2e9991c8b18e100b4217f. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZDA82336736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86a8603a2eb6bade9ee3a02c1ab74e2cfcdbb95e5c797ca64e53f71f5a27c71. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:43:58Z), 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/QZK6J2323674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bac11695722d127caac7e1713ed1abad77885689fb9430c5f6f10b6e6a81181. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:42:27Z), 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/QZWFP2398313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdc5c703ad2a48d71b8fa8bb5fd271e0417b7d02c3e4d51b03d47ed931efd80. 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/QZWFP2398314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cd4676fc0ab718ec467a2c1f3c08b6b1817046ab7a262824c23bdc31b67762. 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/QZWFP2398315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d111ab662b3179b28c7ff0cf4492f7cf15c30b280b2060d8567f248b867442. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:33:49Z), 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/QZWFP2398316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32467c67226ec1f520ffb5903a94988e2b0a64df459c48dfe9662f23a2576594. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZWFP2398317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc862b16dce81036c40d327f5e80f47a7bdab8835408c6a10df4415374f8dbb. 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/FRX282495889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a584d21a14d88e3f2cc9ebdcac02b95601ac5d979d3516299c72933635668a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZK6K2450107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcbd0d183544987539dacb9a7d840bf0549e7210a1ffd81bf0a94855bb16d90. 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/QZK6K2450109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98780d3c1786839c8b4e0de4d9c0dcc8465a13ba10d6f9a22e251119f8136999. 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/QZTBB2418381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e370c853409abb249c60c9ef21f549b0f55ef891b04682ecfcc5cba6c8a619. 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/QZTB52476409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d548eed23bcca22865ea5b6054f593fa8a6ff11e2c58ff216752637961e6df. 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/QZTBB2418383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62acb5ef14b1ee9e170a835c0b4b33531c7e8d842207787cad915262b04e73a7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:57Z), 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/QZTBB2418384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118cbb38735d05c014c0257f1fa7e5288b5783e7d2a3cf82938884728fd206c5. 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/QT3F22476352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a5e1860d8fbedf51162ba2ba7994795fb92cb19a0136b91277c8e73c715cb2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QT3F22476353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ef064e5ca1b9b0b4368f85f0a9cf8428cb1a13e21f0b9bbe2ed89994c3626d. 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/QZES62524340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dce995430fb30953d74275abfb6db011bd89e99ddc5a3eaa1fad5a3a4a5791a. 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/INN2I2511767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20b3e81bde8b04f3eb93e8ebec31acc94fd6ea16c956ee810cba449869c11cb. 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/INN2I2511762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed599dd79726c7ac10d416ad00c038c15392f0cae115285431d8d29f0c64d6b. 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/INN2I2511759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b1b73b4a8dcf24844814f71b9d8df0a9390748c02c7e7e5ecb4448706e072d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/INN2I2511200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c68595672a7b1a105f64adc35ebbcb58bd4f6108203cc2661f02224ee79b828. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/INN2I2511760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5805680304fb6508732774ef9662ee7b48d765db3f175b462b5aa0d6565534f2. 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/INN2I2511757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea82812b24ac9db359eef9bef62a89537cc8c4b2bbff64ba14dbfb5a8553901. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/INN2I2511765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a82373a0060a5a661e6eb39c3b26bf89aed3bd285da00a02353dc6414b50f87. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/INN2I2511764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1119cede63e2dac52199eebd1aaeced08b52fb92167aeb424d580ad3a011f61e. 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/INN2I2511769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536ec06f5163d8f0ae06768ee753b21c8e770e1b6c9794219d96e14697e09d85. 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/USHM22214973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3fe3663129744f20019bb4db12e8dfc4a00e6a579b4e3f0d2af05e14d8d92d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDA72412372.