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 0x2bfef2dfe5c4c823e9f95bf46419f6ce04e0c7e74e341569b8de4614cc7ac90d. 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/2a7386ec-db4e-4005-983e-6fe49acf89f6.json and https://artists.proofprofile.net/proofs/artist/2a7386ec-db4e-4005-983e-6fe49acf89f6.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 0xf4b4e7a6c0ac1ce6e911e90d62621308cc8d8e639458c4a7a276eed873e7bc6b. 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/SE5IB2001085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6643b0c9bf26d478b825f6b530097ae442488373b92641bc5758a1324a3d663. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/SE5IB2002488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8298f8a9c75143e726c06a4a4c848902bb97b8f3cc800c7fdaecc151262b93d. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/SE5IB2134282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedf94953e15ce520d054a6ce3e50152454d59e810af0b99752b163311c6d34c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/AUKDT2402711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cb988e0c588f26b29baff518fde94949990a6b915f4f50a45961bd51ca4d97. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:02:47Z), 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/AUKDT2402714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd53550e84c85bfe1fba9dba51df346493cdfe2321ab03fbbcb74b0b147d29f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/AUKDT2402720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6af961810143c50f4831bb09ef76dee0fb9aac258ca4316d663632b824dbd2. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:02Z), 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/AUKDT2402725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4a9ba3f99e6657073e6f6458022dc8fa0b3b77989ce1edc68fd94069a2c618. 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/AUKDT2402729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1feeb4e0412eef8d2d17107157a8e144659f56ce91bd44dfe37f0d35c2f037f. 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/AUKDT2402821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fab476b2e04941c8b8e1f1ba5f4210d7831cce3b33c0f62afb774ce14ead4fa. 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/AUKDT2403062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129b4a2458b63e1d1ef4b175f00f30a65aeffd74e4a030d8e76a6af92eed7c5b. 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/AUKDT2403063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3fab6543306046f2c4b37ea6efa20610ddef6ef393abc6854c14b3522fe120. 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/AUKDT2403064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728ca3d7160d376dccc75f259a34691037d3d34c342a2dbde86d71da732339f1. 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/AUKDT2403065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8332cdacfc88ed015b17c1dbd3d8b6378dd2fa94e57df7cb3349fb9badc48c1a. 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/AUKDT2403066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a287e6478446ea03f0044a078c2b2e2d911fde498804c8676e324b415879809. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AUKDT2403067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a57709bf50f01dc1e17be1cc5ed4f635fdabf380558077aaecc940874f57f7. 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/AUKDT2403069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad093f3c13d2985fa4a935030ca731848b6a4ef12c0e69076c6c9e2d0511ab83. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUKDT2403070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6d5431b8b889f87f78a1e165e70e4731361dfa91b7a77b729bf295fab7c890. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUKDT2403073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e50a22ed2c32122bb816aae6af33eb20f57e2e1251668d21229c2518bbe23d. 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/AUKDT2403074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa638ba5cedf9328297960c08b42fdc86588615b52ca6c61e6dfec7ef26047d48. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUKDT2403075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefba5ef971cca02add78a67cb8d2087e72355a7279b611525d631e7571c83fe3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUKDT2403077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2957ba9e2a44b67428bd330b4039fb37e389b1849997f54fb057478be28ddbdd. 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/AUKDT2403081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f75c611b2c71eacc6461c417a7e70a2cb7e1b4ad82b493823c252b1d9bfcceb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5IB2343707.