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 0xba9ff1b9a4f789c2395ae53505f63e0c4a2412f6967b9e1f9e0bb2f0760a2802. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/830c4e5d-2674-469b-887c-79ba36c75597.json and https://artists.proofprofile.net/proofs/artist/830c4e5d-2674-469b-887c-79ba36c75597.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 0xbde16b9736f8e0395826a840585badf027089aca245c3ddc150e069543b5bc52. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXSWA2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5942fd7d6ebb537d7275a5552a09b618bde318b6f816fcb1537897950595ca3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXSWA2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e09de0aad500e6a7c8771b9d0f92a0ddaf0970346c9171e332b0103d0a400a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXSWA2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0bf161bccc08430bbb5dd6f810f82856d89af2d8cc2ddf555d7a4644f409be. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BXSWA2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d2cd0860e0be8149d6b304f0d189db8e6cf6f3a5aa9d3863d48ffb5eb24a72. 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/BXSWA2300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe531611765eac38f98e90ebebedc9c825ec18d4e3e9579c5b8b60e97d43fa328. 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/BXSWA2300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1b5679948f539f399fff9ec121a8fbb51973728086589f1ea2641a4d6eeaf1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXSWA2400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9a60e6631d7ebc0351953bcbab6896cabc1292292170a4c565472ac612b0f1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BXSWA2400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ecd00b7bbff3d3037a28d449046ac33f3fa8f7c4fa87a3f88f5409dacd8b96. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXSWA2400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d157f0e513e736b0c83d76ed718039a98459711095a57eef07d3eeefb3d0ed. 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/BXSWA2400117.
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 0x2d74895e5edd76dcdb42ef94003e0891d553090ed7360fc33c80a69e20fb7cdf. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BXSWA2400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9d5524d1d3dbc24e296043905a805efcadbda80e6a5b666570bed6f6bdbfcb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BXSWA2400176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b5aa350e2ee46c247fb3b0946e4e3168b1be71916bf2d91babef256eb10460. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BXSWA2400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e5fc49aec5e371fc363d0fdd47bdc476fdc61bb1909be518390be0532e555. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/BXSWA2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb860bc51c97414b8b93db87aaa9d80d43e2db0c41bbe6fd879072e2784d8c1cd. 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/BXSWA2300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc2fffcb9ac2528611906b8711fb205f7de54135163281a3199f83d1a870547. 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/BXSWA2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ab6a53d01f1751249e4281fb6e98b524c6d1e0a277da2468f641d256e4aa66. 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/BXSWA2400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e6b5460f2ab8d98a4c45a4f8394751ac44c3e72e62ee992d48485fd0fc57a5. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BXSWA2400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16eaa1c7eec8d9d28ebcaba7d8206d619216c3f28809ed8077e26f9442d09077. 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/BXSWA2400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1f24c88b3aef96cad34ea8d1008ec6658cb4f452a13f4d0eb827471df89157. 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/BXSWA2500057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cd69a4bee65e12a63bfa4d52292b0102f152b8f5a211aa6f000cdef5924702. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/BXSWA2500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f344cd1d8b9a2f89f2b1641442e690a93118a5be7337e7ef4852a2380d88704. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/BXSWA2500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999d0cb6c0a75fd342c6dafaf863cf738ed969b3476570b99ec965e204698db4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BXSWA2500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93daef07ebf11b5ff5fdc8c01532fe9b8dbaa954b0b3402e41e2a0782f9794c4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:34:27Z), 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/BXSWA2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c466f0553df43d53420d1df217cb0863c7d3395217fec03d48b2e8f78b37cd. 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/BXSWA2500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a17a3f66b020b9d67f6b19322226c4b099baee48e36d14f94331b5b0f3ffb01. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:24:39Z), 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/BXSWA2500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92986e6a588129de20d23164f09c6b3150ece2357dcacf5007f3ab107f4361d. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/BXSWA2500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc689443002eeef90eb24b4a3a5f892fa74a419c27f045d6d47574761b5f2a25e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BXSWA2500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a0f732ba1ddfd07cec3d00c0b67c9644b7b85882d32f262772613ffcf18c89. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:16:20Z), 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/BXSWA2500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280450f746379ecf662b4414cb8a8ac0074757ce32b65e81f81e7663d57b8487. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BXSWA2500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a06413d4a77b2f623066cd72d97e73b0a7bd16af0cad84e7df1744401032e5a. 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/BXSWA2500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2716a640e4f872cc307433c727616dd1d7f7ec0013a58cea517ff65b970f9b58. 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/BXSWA2500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab5cf337b1c47c168fe2eefc9c2e229aa7dd794a8e7fd442da25f22d691664d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:33Z), 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/BXSWA2500183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb315713f7201b1798a474c7d6fa7d9926f514c2c9ed5c79e743e4d23273cdd. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BXSWA2500195.