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 0x7c5668033ee4fb4616fefa3f30c328e4250f7ab0c3a0032a2f8f202d3ee23480. 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/0f5f655c-31c3-4da8-b8a0-834e0811e608.json and https://artists.proofprofile.net/proofs/artist/0f5f655c-31c3-4da8-b8a0-834e0811e608.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 0x49d43a6502e79ecc37d5ff3a9d32b9928311c4498b5d2be7c3e2082312ff9e63. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/IL1000001990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b258986e51aa1b84ec5c3301d04ce1853c4e55c15f94e48935957adb1c0e6f2. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/IL1000001974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d50dfe561421cdf6aa40e448bd06437f75122ace3ed57f6c1d4ea592406c94. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL1001085947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720130107180199838ed40fc615e5340cefbbd3f40efed8fdd633ec0332741dd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL1001088011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2745d6325f304f174e86deb6f7d544f496ca1e6e3eb0c172ed82b0ededcac2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IL1000003306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff830f360c1db4caa657d6ca615eb56c6821748e44f815b3cd74dadbe99a3bb. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/IL1000003304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0780904a11a2f7f78f0de8fd93ee8dd084cfb19e9dc67e90eb74ca3b9083c31e. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/IL1001085950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb657337f1ad2a8cfead67bcd9db25737d6c03e9ee8c02019e366d7600f69cdf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/IL1000002081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf090c8679f2d06b097e66d7a1b00f88dc4ec8117fc74816c064ca36d7e5d0722. 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/IL1000002076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27989703f42c1d9b6473720d5117e9f4b3409b8fe730951e8eed33e8cafec972. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL1000002080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e036a1e206db6cedbb62337327fa4d88fdbae8c9bc5c1477d78ce7a585f726. 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/IL1001085959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb386012263ed94a526f23e0963458da997c89f7e9f8522333130e485db9b57. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IL1000002061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89011af7b1ca61951bd97d64d5863ab907b43837bcc0a7ff5755d7e850fbf3ef. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/IL1001085945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c6812ec4e64777e783829f5ef00305806413b149cde7bf2fe539bba0d92c83. 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/IL1000002030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d97442da52d6af748277b28fe815d8686c136fc8d11f95c06f0d415bb3d999. 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/IL1010000665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf57621daa2ccc55177594914af847481f324a302e43d8a5ae81f7405f1230. 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/IL1010101414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a51aafb884070674291a9b6d219e726fa1663c10ab7f07aaa039eeb1f8f26a. 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/IL1010101407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7266fde363dd3e1609b7ef0913725b67bb1768541a0167d07ef55723893f6028. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/IL1010101412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad754767a5cdf966d7abcdeaf0c2b1d70793205764906568371bfc18d930062. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/IL1010005395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4896769154fa1b3e8ea4eace5a3cb46b137f267192ebe801c9edfcada8a8c702. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IL1010002029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c1f592653a359a004c2947a4517c775387376e776d891e75f1ebcb4d0c81f8. 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/IL1010101411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9645b6e251a94be84effc0af019ea6ca7a70cf06536e1b287cdfd97c8d6b3dc. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/IL1000001987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912194b47d584ffb1f1e1666a2e49a875e4a7321b67d3c9d5b0627b1ede235d5. 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/IL1000002040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de65f290baa8e614a9a17a3c8d92ea9125db6a627b745ef1f4ea5dd688d352c. 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/IL1000002020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe4725e68b8ec80c466e9f4757f08169841b472c9f5440a4e47396808221db7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL1000002021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf811e1c3ed2e5fbbd9854f074a14206555000e05d48f9ebd9f41d021dbafbf14. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL1000002011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606ab1e147d412335d601c935c8f04e043aa57aaf865105f618fc7180aa81542. 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/IL1011098773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de65f290baa8e614a9a17a3c8d92ea9125db6a627b745ef1f4ea5dd688d352c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL1000002020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7c1f1790b571b0e7b2022d16980a8d89d61900944ac347a676589f2981c86c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/IL1000002022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1c80278611b85f58911bcc3778fa65183783bddb2133b05093d3584ad43f16. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IL1010102536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bc592a1f8704a59d52c45725fac0a0cd92afce7c5178900d9c5150f84361d2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL1000002047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600347dbcb536e3efd9e7c64335c86bcbe0ef54819ac120f10818d980dac27ff. 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/IL1000001983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad754767a5cdf966d7abcdeaf0c2b1d70793205764906568371bfc18d930062. 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/IL1010005395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c006c5ab662e0e6d9e67fa6767308ebbad1a645242ef88d57ee487ba5e2144c. 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/IL1010005808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4896769154fa1b3e8ea4eace5a3cb46b137f267192ebe801c9edfcada8a8c702. 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/IL1010002029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9daf57621daa2ccc55177594914af847481f324a302e43d8a5ae81f7405f1230. 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/IL1010101414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606ab1e147d412335d601c935c8f04e043aa57aaf865105f618fc7180aa81542. 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/IL1011098773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc00f4c9564589fc6d0fa4fcd98cbfbc1bea8b0c2334827f93c70d4e10806c2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IL1010101285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d97442da52d6af748277b28fe815d8686c136fc8d11f95c06f0d415bb3d999. 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/IL1010000665.
ארבע אחרי הצהריים 5: מיטב השירים מתכנית הרדיו
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600347dbcb536e3efd9e7c64335c86bcbe0ef54819ac120f10818d980dac27ff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL1000001983.