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 0xc23971d682943963c04fe4ba475ed6f6097ac91119dafea29c8c936fbbf717c1. 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/1ad0b3f4-9188-4ad9-a615-8d11d932371e.json and https://artists.proofprofile.net/proofs/artist/1ad0b3f4-9188-4ad9-a615-8d11d932371e.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 0xd158766b9e44b0a7cb88f4c7dc08d318f1b66c0e57e15a77bc550c6ff2a039fd. 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/FRX762336385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790157fa886e14e9c3f1401b2e92c64a07918a251ac7e950633b4345cbc702fa. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA062380077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe501260ccd04015e09fe3f9c8b3b2ec47b7cbb8a95110ddb529412a5878583dc. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DGA062380078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aa7fe8634962c0a34f8f122f4d3c91c6e1595a4dbb906cc92844309b9cf304. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/DGA0M2355587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a001db9eab540325dc4b63427e09f64ee52acb7561ee6407a0b9fc641bbab46. 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/DGA0H2305341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5405c09cc8168f3e319261c3050892f19388d479191ff272c04debbb82ae68. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:39Z), 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/DGA0L2357108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f03cdff84f38fad733fe76b5e71991c458fb870a928df279f078f439e624540. 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/DGA0L2357113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e516a245861e1a4c82d04c30d9633e5789255c646ac7c8220abcb4d2d321e51. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DGA0P2317302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d8f802c4c35d5e1ef83d479e10384efa84ca1f724403ae9f3a38f08332380a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:35Z), 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/DGA0P2377641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4371ba8ac9d1c4df05b13424a64c16ce9190b94add6ebd8c640a1edf3f56ccd3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/FR59R2427719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d49b2b4cd7f8613e238e5450325f70d748a2b103504e2c1f31c6e4be0941bc. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:34:33Z), 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/FRX282410882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31972b3e46c6a86807dd6828623a78174e3dd95e1a7509ad1d74cf1fd3602997. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX872406368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38d73726df0a6b7731829bdc659328d85e6839d3db04a3ca387ab85cd92dab4. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/FRX872431437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff8eacaf5e8d7186f5411b67f796b07e2e6bda15b0653306e188c51dfff4a10. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DGA072461015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78dddd3a44a9f6586a385ca92911b0fc75c1b20997b8b78344fa7e4f2936be3. 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/DGA0Q2486776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5ab84b4ee0402cd114d31901aee7a72623830557cb02af597957b0a9ba9c47. 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/DGA0S2458015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f71b3636aebd3965fa2838923f64966a97be289bda463dcff5286bb3cb0d7d1. 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/FR10S2583936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b18c8d5c6cf090ec5eb6297d849c27fa6ec678afc15c3b77634cdb44788818a. 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/FR2X42551478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef63e7852c0beb233cdb9e1ad84921bfd2e83014232a30b1260fdd9ae15322f. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FRX452540907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293e9ab78782595de816fe2e22bb8e242b3afbaefb68eaa20d3fb688ec19d5f6. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/FRX452576235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7909b19a82d08c64259060c0196fc2ed55a1de41db54a5d3164dda81250863. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DGA052549800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25508298839ecbdbdc1887fe5d7b0ffda9e8a029b7c34af0529a08af19338fd4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DGA062536128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3579c320efc4ddec3a8b552de791eac6dee731c74510ab21b39d2e985dd69c05. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA062582128.