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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292fb8ad5268ce1fa97e8394bd4621698393aa5819b70ab34fdc3b4a64318d24. 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/4859d09c-e16f-4f6a-b61b-b8eebaca331c.json and https://artists.proofprofile.net/proofs/artist/4859d09c-e16f-4f6a-b61b-b8eebaca331c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d55936e408ff23502f34b9a86472433cbd482c921d990996402971e5ee8a3b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USTC60862662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92000b5ea254075faf7b0e497ecc6c02571cfbe8340cc0011eee2e7ff46ccf97. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USTC60862666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12de0c416e17a01904d1411b093e046a7c36850c6d70db3c5893a98ff6e14055. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US3DF1112368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a20409fac9ecca758456ecf65112c1dc8e27eafeefd0fa533519b028522ef4. 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/US3DF1112369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7256ca47fbb396d07417d06facb623957eee530cd84fe0bf837a124a63fc262. 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/US3DF1112371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e91ed6be20b2f467f3c1bb8684038f48ca7691129bdd1589733445698a8d72. 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/US3DF1112372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b6365b98ee744efa83a2af7d2a9b5e4699d90d5d8525179889b9034a0ac6ef. 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/US3DF1112374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47828ad25b37db6d2ad119ec6b3081a250d550bbc821c2f2183ca5237cb0e31. 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/US3DF1112376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdcf91f057e6c8e30201b83ad72c1e5177ceb2780fc47a58b51d7800b87d03c. 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/US3DF1112377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610797076502471e519709a26af234a485bd4265021c9b612e4bb91dd740149a. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QM87M1502102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170229923b584ea4adaf27c66a06492c3bbd54cd99371f53d6523539e7cb5df9. 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/QM87M1502103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c691728a936dbea2a75b6d9f3781fe905b89f879afb33465e5eab4584bdc43. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM87M1604201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cb7d0bef2812a9d5fc7b05089d0db64f88276ffc0b2e41c114dc9643de990e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM87M1604202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc90a1810af3a00680c9eb4ddc8b580d77b4f23a90ba33d349ed277bda774e12. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QM87M1604203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670a720b9e1f6372dd298f692585ca668818d47ccbcfad0c23d1bd4b7a828558. 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/QM87M1604204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9971b21d7cdf0d801d6542983191d76a01d0b90e9f2cd97a80ba60a520d11d. 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/QM87M1604205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f06421faf3961e656cd35d6f6434accec5f36e87e61010a4973581ad305a9e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM87M1604206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ed9b0d7f7d10fa440c461389f7dc8a736daaebf962447a4dd87a377164ea03. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QM87M1604208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0a51436eef60ded9632e10a2671dfb09cd7ad7471083c4fba2823c4cc83db4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM87M1604209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5c56fd8887b62648ba1c4d59d63acd912f76f3d40e39f7c74efc07e81158f5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US3X51838804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1b35207fc54b9e6734200411fb8f4c15e9bcd7ee786dec9d1c1d6a3a242c36. 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/US3X51838801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9496716512ab5963094eef82ff1dda87699fb633a622af5dbc6f9114c5387e20. 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/US3X51838802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7befda946e9b2a1be5d2870f3d9c2dffbbb433171eb69710be65456565e7ad. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/US3X51838803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6889f263d59e27542c8ead5de6432db0bcdd3ef9fb7a6b9a633997c73f3f6a62. 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/US3X51838805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b585a865db81d98780aafa3143ac71a4abba17ae0a33145aab99207471b1e9. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/US3X51838806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f8b1d5a24ab57890fbf5e54cab19c6a6dc6ea7b199f4b656a1918cb35923f. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/US3X51838809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc41625dc3d64daf5103eeb82b08ee81361c87aaeefcb54f5134a9f218a40602. 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/US3X51838807.
All Get Out on Audiotree Live (Session #2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17e2952c25e1673e4df05f103ea57f5bd4e13dad9d71568ca259c2b1d6be0e9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM87M2519208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baef987673a76129dadac917fe32305a47e790480a6453f9dcca9876a9bedef. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/US3X52246602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54846c5d5017945a24775ef98580d16fb6b2275aab82cd9cd10f627fd58bdb2. 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/US3X52246603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bc0c513d326c3b7314e5108e02f31c7f6fa38fe25c6c8070a8929cdd18878e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/US3X52246604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e39b4a560029b447cc37078aa1e1144c6d3fff5c3cf1e2e3357d8a36811f705. 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/US3X52246605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818c651694f7e42814f5c8ee1874b345caac739ba2acd438b109e57530019478. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/US3X52246606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d6fb8d5d7b803543eb2e50afd40c50c6cdaafb95405f8b169ae15e5cb8e8bc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US3X52246607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6c21b8301601388ad94709a4044e87116adb9e7adddcecf0b351fb95d40702. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/US3X52246608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4113e449681e9c1eec46df2650c84c1f27d8a467f8fc5ff400b056fa39df23e. 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/US3X52349601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2ed4f814414ab9ea1037389a048f5cebd6615cf99c5a407b73cc836e9de1a6. 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/US3X52349602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea928a39fcfebba3e997f3e5e720190905832f28df0cd1d4331e93980e97174d. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/US3X52349603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8d4051276640b17ce1f1c86a8fb3557d7dd7c9f4d09eac3f977a80e81ebeba. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/US3X52349604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5dcf843da75383e41bfafc7c20ce7517255ad35ab4d713c8d3f37770f518a1b. 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/US3X52349606.