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 0x4d3b3eaefd9ddfd891da5e788d6af7d1dabb7a7b8e68acbfab06e0675d0ad26e. 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/e23c5011-003b-45bf-b6bd-b0a01212f8e2.json and https://artists.proofprofile.net/proofs/artist/e23c5011-003b-45bf-b6bd-b0a01212f8e2.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 0x670baa50df3f8301194a545a5bed9dd21803ec364a72fd9cbc31e1e56445cc84. 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/TCABF1245656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97c074e16bb625d79aa7284bb193c6f339d41dcdb98410ec3c82f0eee9c54d0. 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/TCABF1245669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ceb1ea3b49384e6a89377e95eac7ce379ad295bb4186720ef6abc6fe1cce1e1. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCABF1245671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17d7b0a232d8d937b0885d2c5f340ff6f15174fd6d0176d3887f0aa65da6440. 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/TCABF1245680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d8b94455f7ed7519e77d7ba9440fe16e61f75f60d77c32645e691e670d31a9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCABF1213124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d48630864dfa26b782f5484ae8d5c54312fb615fd7be34c60c478e1b88360bb. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/TCABM1338686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26deb29e2246c278b4ed8d80d960a5f034b0d2963c95ad5ac89a94353b93e3e. 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/TCABM1338703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd5a6337b7a17e12a285e959a3df5b2b624bf2b03e1096be6c3b2f607a2b6e8. 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/TCABM1338704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897c62f7484b488e7a04956cd7a383d6297be80b6f27de4e636d4c8a3e711c1e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACG1534982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec3803c30fd8331a7a84d41bd1f3eb5ff756ae2db3fe5d561479ea2c982fba3. 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/QZTBF2434775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eee983c333058935b931edaf748d25a24ceddbe3224558e5b1601ca6556f80d. 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/QZTBF2434779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764de13c00271c971b76505b211471ba150618e8d2d31849e2832e4282bbc5cc. 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/QZTBF2434780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77612bce3bf7e8285e49e00c80fed039a171bbe3808f7ba6dfe4f26c741ee686. 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/QZTBF2434758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa944083eaf29835af443dce0fd482a41874b17832926185dbf5f70cff8a2b6eb. 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/QZTBF2434773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f859c006a77caad60c227096cfe11fa16d8782f2e67916c61124ae015455ca. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTBF2434776.
Nerot Shel Tzion - נרות של ציון - Special Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee52ee081ac71896ffaff88450466a928ab72216c1c73164519d44d2cc56a6d. 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/QZTBF2434772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fde090e42f46f7eb0559b424b56b95d4b38f8d563d1094a406398b9fd9e825. 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/QZTBF2434754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd21578dbab2dc519b63fa23b063e48d28040d5bc50ec96d091d1af64ce0cee. 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/QZTBF2434755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7e25cd78857ea74acda6c4d7f52bfb089596e2f2534d36afbbe089880630ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTBF2434756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c66afd591837557eafc32f0e0c6942137502805e91d40fe16c17a04849dfc9. 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/QZTBF2434760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39732c00fefeafc1cbfe439ab70fb5bcdd84100536ef71b7b742b9886c1ff5fb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBF2434777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdf95d46f9d0e05c5e445ceaa296c05f8045bf838af98c540c86cc2083ad601. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBF2434778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d9b1195d37c0c013abefefa46a7adafa21a1df9e35dc5e52160865beefa6f7. 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/QZTBF2434781.