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 0xf326488f10f4083a379ed95c27d44758741ffd2d9e898c129fa3f1854fef40a4. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0c573f26-ef4a-40b4-b833-c11ac7225f96.json and https://artists.proofprofile.net/proofs/artist/0c573f26-ef4a-40b4-b833-c11ac7225f96.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 0x888e1fdd91b870a11346f41cb94366310735ccb06cd43c8229557928d629a67f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBSMU2350998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677041f1014d20a2b84b590ec8bae7d1ad7ae2f30f6fac76a555e2c70bf4a2c7. 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/GBSMU2354485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb977f61174979a6f92eba6c5161191bdff749d0855e47a2022a62be7ae8aa81d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBSMU2377215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbed21c6933e24a9b2fa5b63cb3e9b12e28bc11e157bc28dc531c57ceb5880b9. 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/GBSMU4382915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4039e463c7867596c60bb10029e8ef76ca00f2ec12d31c7ae3f4ce508545a4b0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:18:22Z), 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/GBSMU4382917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ef914424f946d7e1206d39973bf2f584ca4013f3e51e35072773a13ff869d5. 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/GBSMU4382931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01635401d9bde2bd226ecc1bb355906e0061c92359ec42da20b73a4488f72a9. 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/GBSMU4382945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c9aea8a3351cac22c419fd3cef12f12dba53ef9c3438157e662a3493f4ad10. 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/GBSMU4382947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df63f4b43c609f40cf31a0d91d5edbe71dd8b8206e5444c514f58d49980eca6. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:25:32Z), 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/GBSMU4382948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6943bd0a12080067e193faf1ae6967440da57bbb958d1fdb2bc154a350c09063. 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/GBSMU4382949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c49b796b6f67f780a504d9ae35f0767b90df46a3a7399faa7718816992f492. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBSMU4382950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996969f1a2c4dcdd6d492a4dc50ee216fd723dddd6d66979fe8aa392477f8e26. 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/GBSMU9358578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99795189872e0e58b71a2cba72e600c3c99df3f03aba8ff654b96431349c200c. 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/GXR4R5236028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df157d031fa11c472a51d065dc52cb9eced16238f99d220512ac4f2b0e3c4c7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX4R52381163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9a8bcd1bb011714a3d355200dc96e02f757c0bd70ddca7316db065af43a1eb. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GX4R52390806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722cf5c5de622b62000940fe32b17fd39bd329c5fb6a0f191d8611aabc0e63c1. 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/GX4R52354877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c33e8c081ac5ccebb1edee0124b2711cc991da9f6c7ef8042eb059ed20185c. 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/GX4R52357332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b6d76a4d8d804abc1968a03a5cafd132712778859c43643e45c18ea63ca25b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX4R52355455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc438a460cbb5b34a80e1bf7abfd2963a0a286394d8cb84bb15e04d5164b46822. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:53:59Z), 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/GX4R52302404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c6ecfbcdd5641574beaabef3dc0be696e986cf1f75ebff441f8467069e7b37. 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/GX4R52305649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03db3f4086194c4a43cce7746f68335185ce86622ea9ccd9c345e6d0251cf5c1. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GX4R52333930.