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 0x4c753a38a7ff57048d4e90c6bfa93e243913c893aa2f122df3bc2e0bb62dbc1c. 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/e07687a6-9e02-4aee-92d3-e340caf4ee9d.json and https://artists.proofprofile.net/proofs/artist/e07687a6-9e02-4aee-92d3-e340caf4ee9d.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 0x8b4f5fe6e9345bd39b0c64105b7c3ca6964baa38c7dc63f8cd4b91ea2c5fee69. 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/QZFZ32274761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42693fdd24e099adce6d78c1214b9380b3b7e3c5b7847f639464add0250db74e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZHN42275024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2793a13ee732356453e1fad93af2c88681b11877e961864ca667173dcfff30f. 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/GX3Q92307486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dea5288822ced121052b9513a7c04bfaf4eac627c5b8a903e852a654634aa8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GX3Q92357230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bcb8a62799e8ec4f066299c6f5a4511b0f7d9b7283b90d2a02b5b6706a718a. 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/GX3Q92357229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83bf85cb4d04091e0877bf2db9c41f3b6884747914164266e2f9b43dd192003. 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/GX3Q92393034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fd00ea4badd13988850bedf05e04087ec947b1b4bfef74af5148c7ee19d393. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GX3Q92393035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af19add702a5fb95781dfdc75ba7a58d71da02004b8ab6a5a5521833f54231d. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/UKXN22440092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859611f871f3092c8df621497e32ec6c822132ae8b2c929fa0d416883664e5af. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBMA22358859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75571b8e09e71d64295aed8343d6e28791568375882a56f12cbe2b59b09aa6c6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX53U2477684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859611f871f3092c8df621497e32ec6c822132ae8b2c929fa0d416883664e5af. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBMA22358859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9799ed57298b67ea2bbe50f75b965c1666ccf7fc11e7f041aabf6a36f5f6476. 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/GXF9Q2457606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc3a8081fe2016fa1d9b3dcc0e59001a94e547769e68ab44a02fffedcf2b893. 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/GXF9Q2457607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa392ae16c494488438bdcb9f27127f92a136bfef9856ecf5123c372348f5b6c7. 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/GXF9Q2457608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94182c625ce92d328e42459a23909a9c48ca021d100656a2f0acea2e0e004454. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/GXF9Q2457609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef94e0105e61fd9da4a248d3d50ef27fbb131c94bd494c9a83165dd2303d8757. 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/GX53U2377125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ef20f4424f8e230c2c6b5f813e3652370b1cf5f3936f0cdfa5e33a72e28380. 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/GXF9Q2457610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0743b8eb405317f02f29b67adb9cee6b64f59549505b861faf54fd69c8e6f3e2. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GXF9Q2457611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b21d24888e9b1f1743513708f56bbbee4788f20835584acf96a0f2a261ac15. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/GXF9Q2457612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc943c5d202290c2167c511572925d3962508612107cbfa943f41a8e7d4fd54. 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/GXF9Q2457613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56c70c6aa0ec6a03339d4f341cd902af2d60063b0e9deda8952054ed7f25f80. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GXF9Q2457614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d58f7a2f40af7cd29f0af0fc042d7120ba2499ce04ed9a365c3a3d734bad9a. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GXF9Q2457509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c2b97d8ed8055ea61d14feced1827e0a0b8c6f37502537900769a6493b02e2. 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/GBLFP2504149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab28ef201640330ed3486745e33153e8274e4b7627b074380390c20026c20364. 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/GX3Q92392957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f0ca67e75e943901c0309165e525263a84c1c8de3aae350d6046ca594ffc2a. 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/QZK6K2176251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b44dd9683ddfda9ee6101a14c9ee4de6aae049a8456d8e60fd8051ceb34439a. 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/QZK6K2176252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1cd0ec255651f5a59c8ef6bf7d824098b8ef3192d1664abf4ac3aa38874462. 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/QZK6K2176253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2c92ea97d4a8c124a596f7524f52a96a653338cf4e409d3916ee5ec397172d. 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/QZK6K2176254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5626b33c5e9df9768c3f054febf752b11df9ab6922418715dfed747d672183a7. 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/QZK6K2176255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953cf73f1bf95e26f970bdd3e233d36c0eeaffc3bea30d4f960935051598df45. 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/QZK6K2176256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda91dc449c546c70551a8517a0fafb4523cfc865b7fbccad5ed37569633bc23. 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/QZK6K2176257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22659ac3725e4e10eba9d6ad069f0add91e6e7f660203481f268b1337b34784. 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/UKXN22459916.
Keylo First Take #GW1TF (Part 1) - Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69993ab5399ccc981b8c7d508518ab08fa9fe7bd46f6e7b8eff79a5fbfaeb98. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/UKXN22459915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01655cbeb7195e22ab806c6dfc1cb958cb499c6a4b00f757073eaee7f8b96080. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/UKXN22459917.
Keylo First Take #GW1TF (Part 2) - Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfb052d9c67c754741877aaa61a1cf9b02fe64d00fc6fd0dcd98b31a651b98f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKXN22459914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e544df8bb15b5b5119ded5568ce2a5c3917ca1ec31d2315944e84e46be74573. 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/FR2X42568450.