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 0x65141ec33fd31b2223051e0d4e5db60d2ffd6838b5133fb3d3aefcd3afd625bd. 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/e1658846-ccdd-4609-b695-283017796819.json and https://artists.proofprofile.net/proofs/artist/e1658846-ccdd-4609-b695-283017796819.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 0xc399fe2c39b5fb5adaab36a8b2ac124d2544481cbe271d37bbeefdc1dfe8f7d2. 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/TCADQ1807040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f3a16a2fdd3e6a1dd18c2da9b7c1e105c1f33e97ed8a6b98ea8d5d1e1eff68. 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/FR10S1844120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4567f750e7bc076f08f52c46d37522c2d985699194a8afcc47fc11c414bd00c. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/FR10S1844126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ff18a5df29e4911ad66e7fa03587c101a6319f0cef3f14351a3d9d9b11c124. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCADM1815006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944c40e9a0766a0740d9b2dbe990fb7f9080fc184deb253260dc8da07c227b18. 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/TCADK1776912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001839018e557ee9eb159150557c848c658f5280b4ad8c68311ac3b761852948. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:28:23Z), 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/TCADK1776915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5eed6ca20a9b7adc47e309cf4b96c7c85419a1d3946eb932424c418e54f755. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCADL1899579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d1da4792c3493fe80f11e6d680b3a835a950fd1da6911778566640e40ec8a7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCADO1884965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f98beb0476129e57692deacd63f4c816e37c762459b43222b449a337d49f234. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:27Z), 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/TCADT1849064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35539ba36cddf5a26122964d726fb5a12f6f2bb962054586b327d9a8ef435eea. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:25:01Z), 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/HUA611901179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8cc44a8e545cd27bc44129872d8b0d412764f8bb89c1d886c351050adae520. 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/HUA611901581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbfa85e959b1c70b655765bfb2ac9d433136b84a52d3ad187fab47380aaff99. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/HUA611901582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca0010876f2b1fcb56511182f9dc9c08394d1a67aaddf5fd9b93ec9a059b03e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/HUA611901583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e15f5fc398cd60f6ea311636c8d6e9dae73b2af287df8159a7faf55213eda5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/HUA611901584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bda3f4925165550c4a3d8d7417351ef1c76e7e224d5926f29060f63b952c5b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:03:43Z), 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/HUA611901585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98418e58b5b8241383255280df85b969957f47c4c068a9ba4315faa55f4d9b7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/HUA611901587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338782c1b239b3e5769f14fedb6c39250233f7a280165f9fce9bf8fd93b94961. 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/HUA611901588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e486e222cc26e0987159bd621a41a3e2b9ba6e79677ffec170664bff0ab818c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:08:20Z), 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/HUA611901590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6667e560d87eca9f1d3a557ccc2c4fb60bc56748f18d77f30468d27188a76967. 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/HUA612023163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3788643ac88b43b4db64766d4ebdca4663f5f6e0064530ae7268d231a7197667. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/HUA612023164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe09696d5e43e25fefd7b060cf275d8b5ee096d47f51c3ba7b5f3ed2992a1e36. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/HUA612023165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c7c244899cb8e5eb754b16473f963af8ee5fae23993c93d9cf5cd5256f87d4. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:34:16Z), 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/HUA612023167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e49c1d54c5bdfc0cbf0958973fcfdd4705bd60a9d8730ebe8ed7c6fd63b00df. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/HUA612200364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1c531924600a30f57b5d007a065fb201579f2cecb625733925d1aa7ebfcf92. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/HUA612202272.