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 0x4facd513b9cb5ac35af79cbe8c39b00f5939d5f6e7b4c9cea0b7f5ef18e558b2. 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/0c04995f-fe97-4a2d-94f7-80bc6f821989.json and https://artists.proofprofile.net/proofs/artist/0c04995f-fe97-4a2d-94f7-80bc6f821989.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 0x1886f1c6267efe422f31d2c34ae07c3d8ef0e305e54bdb4c9549336fe20a4b94. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBMJG1501412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbda08f8aa175b010b089789ebbe5267ff86cdd18ed5704457bc782f93ae883. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:11:10Z), 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/GBMJG1501415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25923499e63ea74f3f11598d68c730937a9276c7bc868628e7d84fdaa4d26d6. 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/GBMJG1501417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aeccb02e76cec330aa7b0e33710cf4c50818bf41150bfb63fa0e28d0cb052b. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/GBMJG1501418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e91cd4f15a2c78dcc6a4b8a99256ef106965ec200f08f2b3a0fc12ff5b3181. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBMJG1501421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2f04d0a601cf56fce4d47169f3925d2978a12139425808f74f5112965540f0. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:31:34Z), 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/GBMJG1509858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa83c937c9b34eacaf9574ff8bde845f2ef497ddef6e1dbb7a07bc6f1878ae93. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:54:43Z), 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/GBMJG1509859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761714247f4377340d29d7c5aec1aefd4366cdf0751df9337403df03b84b0d66. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:34Z), 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/GBMJG1509861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e98ad3781554128ab6b75d036dc299da580b7cea546fc0edfb7645db386a401. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:34:24Z), 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/GBMJG1509863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ac6a339737918e453258be62a16b8c7d0c372e3bd037be9e1c7594f6612139. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBMJG1706323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76d641a58c04cf76d726779694b0159ac3390d2b6d8a9a8b0afc60b108aaa80. 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/GBMJG1706324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db3be060bda22c6e12fbd3f5c0fe85df500c083c0e7c7113a63d48065030f1c. 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/GBMJG1706325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde0617ec9d59d4a59303a7116ba109a28c59a0b9b0dd908ba29b63ff824b3b0. 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/GBMJG1706326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd3df1218424f116a7a2b12790505d5d9f18a03af34f234126e86f710254cae. 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/ARJ401900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e1f2d3a2bbbe472a4527c9bb94f7ff19eb3ea06f7d5f62bf0ef877f5fd9798. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ARJ401900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7560d6cce27351316de1f71177ce0f18a12d6e7ff7fc4e62d61a1356ddc65eaa. 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/GBMJG2116818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e33675d9d8e1f6afd69a8c587c7666d6716cafc96f16f2fdc989717244e49c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARJ402100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e18b9f62317d4e8bf677a60daced200fa307dc8af7b19b8182539f6de9da30a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARJ402100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7ab74ba787e499a01d0f565ffae8b8dded330e13236b040886bf540b40a0d9. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ARJ402100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2623f789a4b13dda187757ca03f5811360bcb1adedc72cef5adc5d2fbc3cde7. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/ARJ402100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bd1a8bdb52ae49e6dadcd9fe35146565a377305cbae42db7d1fae2483eca10. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/ARJ402100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a0c8cca273913888c133b70e0eeb7c59b98b07d2e8f03c16acf32bc7838bd6. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ARJ402100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323c1428fb636659ca71d4e91fa1ea76baf889f1ff419e94228be36fb27dcff8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ARJ402100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdede52eab5253527431291107c5da4e760bb085c32d2dab8bb67979c76fa283f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:12Z), 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/GBMJG2326097.