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 0x8363c3169ef5dc6d3c9cbd797c464554cb979d66e96043d6c9958e2266704fbd. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49fdf346-932c-488f-8b29-5ee1b1c624d0.json and https://artists.proofprofile.net/proofs/artist/49fdf346-932c-488f-8b29-5ee1b1c624d0.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 0x5266b3a09753a8a4c0d239f2cab5a5a3b5adcc3674760879010ba2e68914ece1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ART0G2000666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad49b50bb63038ac05072405294236ade15269ef5899bc63116dbaaeee420b6a. 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/ART0G2000674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2046973fd45c7386ccd03bf3bb2bd8205df84e33b818418254ea16e68feeef97. 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/ART0G2000680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f93fec2b42b40890fb421818d218a476aa987be268ac25a5237a18549ac2c7a. 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/ART0G2000695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf672066e28b131f939521517c8db2b0980ab896287edd66532c04829d1b58fcb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ARIXB2100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f17e6c9c93d957dc3fb9959cbebcc962762f3015e9c8a0ac2c1ca64fe553dd8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ARIXB2100567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb1bae493f68c39d08bc646d57410585875c037351b80fbbfa7b707a350140f. 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/ARIXB2100568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf672066e28b131f939521517c8db2b0980ab896287edd66532c04829d1b58fcb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:13Z), 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/ARIXB2100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f17e6c9c93d957dc3fb9959cbebcc962762f3015e9c8a0ac2c1ca64fe553dd8. 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/ARIXB2100567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc936b558eec44ccc2414ccc00a3b84bbb79b7d069f3864b30a633722d9f7783. 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/ES71G2249706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b3e51f19ad7b18540cdf48e463ffec583198b06d1877574c9d0c47ba12149f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES71G2316594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0764b7cec33eaec4228526212f1c4fe656871c030c4846f27dceb5cae4dfb3c6. 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/QZFZ72433119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedba9548886e6e957a9bb177e5a099fbbc02ccf3952ece5e74ae0fccb6048e60. 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/QZMER2457360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5502b7ae9065da01e3388ab104f08458ad90bddd71df12aa8c19090f5e629324. 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/QZFYX2514550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a26f638748941a7da77768e0e9366cc6ef38de8b68c80d7c3ffd6d8c904135. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZES92549240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ee5cef9f25835c10e0d3108aa0b259e8e7745845d587c1e6d070fd4909fa3d. 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/ARIXB2500550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ef119a704828f794428a7af3fb50ee614659e54fa22b1e6ec59bed4ce3b5d3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ARIXB2501325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8838c221402be4f0a4cac0f8210a3d64e955b1b4dedd688896fe5d4720f436f. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:34Z), 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/ARIXB2501557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d296e5010198eb5937b49771a3f15b9618f09f50e74e4c6c9f490dcc481fc8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ762576318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e0a64413a63ddc827ef4ebdf7ac19a35ef98603959872a99568730f2074ab. 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/QZZ7N2540280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7e0ecf289929989f928a5c5913a2f1a16c3aa7f1ac038b15b88c8517f38691. 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/QT6EB2592350.