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 0x8b19629a3d28a7ac2f18c7e94403ced624daf443f4e9f2e0033793f45f40b2ba. 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/d2dc5a46-d01d-4938-bbf5-b6d15f851f64.json and https://artists.proofprofile.net/proofs/artist/d2dc5a46-d01d-4938-bbf5-b6d15f851f64.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 0x4f740547db751554a65b6015d2813c94368666a116db0c1a2cafee58e2441cc4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TWCC32209094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92401348780776bba1f2615da51f9ed7891e73258e108befe1a169b9d3071cfb. 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/TWCC32209099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510e2d4e98c82558b1608aa66659013dd8456eff2b67ba0f23d8216b9834e75a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:18:28Z), 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/TWCC32209111.
頌缽元宇宙 頌缽 自然之聲 安定心神
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf020cf28c348f82f37b1e8382dcbad0db141e21893e25d6451198dcc19b6354a. 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/TWCC32212715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c76c0c7aa853a902ab30e7e9c63184282c70c127ba8a61e04cf4859a30da27b. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TWCC32212716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb67fc774fea2f44f1ee76d66352047479844dc6b6039f099ca71e014e3635e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TWCC32212717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9069ca3413b2ef7d1569549dc53854b0b6a1f056fd10201ff27dba8245fb08c5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:59:21Z), 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/TWCC32212718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664662092b06ca4fca579748b1dc7b2fa33c37ec2cc6745c461f81e7ac218a0f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/TWCC32212719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888553940af1e85be4ea919d3a2570b73af5326af1febec4ca45aad13b8e9bcf. 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/TWCC32212720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33db8c4bfb5f6756f2987b2484d8ce64769cec91b7a485a2c264124447dba334. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TWCC32300930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf761bcbeb9735495cf6a48273d8b9da5eb46c744df4119d65deb84ed375c5ab. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TWCC32300937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2c9863475c35572e63f4107a5362d331a1f1e277400501e33695f51878ac96. 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/TWCC32300938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d974bdb089b80e37b387e5c2d458c6e3b08deba0bec8e80412bd200d42b92f5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TWCC32300939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3741ae4ddaf8346ba57dcf69e4676990ed8a1d287a253d2356aeb31191c8fc. 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/TWCC32300941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18cf6d0507d45fb329378e7ab29ffd5b34e6477b5bbbe4c380e539e29f2c1e9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TWCC32300943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e96e787d167091e07ede131d8f9412aec51cfb2a712d040e509e0024f38fe7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TWCC32300944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac88f9a12af8fe00e2c35211bef46fdce2e5807632c292063177c2a640ee82b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TWCC32300945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1081483969c652039654c2e69066a86125462229c81ab71392dea396334c435f. 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/TWCC32300946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b6ed770ddecc61a1548beefae32a01f22b18e38227e804973ccdfb1554df52. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TWCC32300947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e801bd0f2b082ff1cd9f4c5fc1cfa41562646041623890eec2462a4f3c42dc8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:48Z), 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/TWCC32300948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300ce023c2019af8748528afe83b19a0886ad8e51689cfd408c793ea003beda3. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TWCC32303877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434354143938acfa2423a4e9cbb442d758ec3476ecdd3fad2cf10cce061280ed. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:54:32Z), 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/TWCC32303878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62759faba40f59788c9d2c88820e341554789e8064a2402ec64859fb1d27f1fb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TWCC32303879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee711a16b5804c1738623b34a73b9ee9058621ea0bd5572054b131ecb704067. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TWCC32303880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035bc73ef43c44d344936d77c263fe8fd96855c460c43f650e0b2e79c67442f6. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:32:48Z), 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/TWCC32303882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93de363a0c529a40986d7a0b4a72735b37c39e634aa695124c4c8afad8a3921a. 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/TWCC32303883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0013467897c331bcf33c6d9d2664ed05556e3ac09c51043319ced670048e9e6. 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/TWCC32303884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53550dbe2911272b5cd6128747569b43b3cc8c7a7af063ba434d87090cb34e01. 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/TWCC32303885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62edd08b002a793e9229742b0f103069eaae96023861a56d8c9b46cf18feda32. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:35:20Z), 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/TWCC32303886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dad709a4b0743c8810c493a53604c7519992819fdc8d924583c21d6a05eef47. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:41Z), 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/TWCC32303887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5723053ddcda08a3287dc27eeb0797a09e0f9d6431a7767c2be744053f9d2f80. 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/TWCC32303889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702582da3f649d7fcc0479bf2980565f0c7ce84ee62f0eec3c4225448b857014. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TWCC32303890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1ff0d7cf7fa27bc4b5ab8745286b11b9b1b11f5717f7fcbb207999ea80044a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:23:52Z), 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/TWCC32306154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494eadefdc207ce9ab86db638c781d3067d34cc0a6d9514041626a334761f2bd. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TWCC32306157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba944a9f5c49e1d5364a9ac117cd9cdd2d21f0cdf933856bd985d5121e7e8d25. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TWCC32306160.