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 0x176e640b197ffe542eec72545f70ef15456812f917f2c9ee139f51104d08a410. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83b0c501-65d2-4a25-bc2d-f008f6df0e76.json and https://artists.proofprofile.net/proofs/artist/83b0c501-65d2-4a25-bc2d-f008f6df0e76.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 0xa9f92f8dc70d394a67f2969a97debe026addf93299595f91c3fb5b07d2cc985f. 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/GBLPF2403136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abba92fd296495caa559ceff488a2308d01d597378a845ff94d73d78720b4fd. 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/GBLPF2403137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4ce967f439d8ca99e22f2f9c4d069761744bba74f6f8af4b305fdebc5158c7. 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/GBLPF2403139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1db776b09300702a1fc896a2297972466b900451f2b6c84a50167ed1c0d0ab. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBLPF2403141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c63a12d7425a62aacf53e0f1ea0d94baa708e6cc949a9e6bcac342a998a10ba. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBLPF2403142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d083cf5f5f0c3522861c1ef99b0153085835a2cb9fc105903007d13bd7f540. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBLPF2403154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bc6beb37d7a98908a13ca30ba1918770cbb726e1bbcd722c54e5bffe3d5dfd. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GBLPF2403155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffc07b85ed64b893b2a9fc6de961676a44925863ecf7fe47fdb88cdcd4e40b7. 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/GBLPF2403157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7499cc2a75e2af82a65ef16fa072797928be09d40f130fa365f147bd7306c84b. 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/GBLPF2403159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaefba12a7f6f306f1f31ca1978c61f73fa75148277e9d413461757d3ab4e3e0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBLPF2403162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacccc8fc17f02c20f3ccd96cf03b66ac8b7d9cb6668b95797cd500be0dc5ea10. 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/GBLPF2403127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82caa30db4d734869d6fe3ece1a2cfa83ffa812c739159d6d2b580975178bfe0. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBLPF2403128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10a4ec267485b9162e715fb0e5dad25cc307895dd679c2bf1249ef180d8fd88. 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/GBLPF2403130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d972448ddb8add457ca74120e9266e4840f55f23f0c315b1a2abf739ba118af. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/GBLPF2403132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc521618285946a7816efaf26d78d7f1897ab3be0ee79fb1f50017ba7cab32ff4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBLPF2403133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c1fa46e715c11a0b308cde05a7102c9a844ab9932a10e32901b38bf24c1a63. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBLPF2403145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be886a2ae44a8cefb9d20e1fcc1fda1be721fbd0d7d96a486780f9694e46eee. 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/GBLPF2403146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b6116387698765389718ac135366c137261f08e1b524fb320d744955491afb. 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/GBLPF2403148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901950d6f8324300760b2f41c5a3144b4f6c5441c49c482c7e1e4056982bca16. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/GBLPF2403151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3742b64152b56e5756bba708c58b04f778e784c55d8e6c9b139f65b52ee04154. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:08:50Z), 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/GBLPF2403152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea58f847112936d2606c9e1701e21809619a7cdca9fbe9ec716c910d4afab8da. 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/GBLPF2502641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf759b5025ce4e5371583277a0296066a3dc9b01d37b0afc3efc825480241fc0d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:54:42Z), 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/GBLPF2502644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34810f7ed6be1bafaea85f163268daca6ac71889b2c2e1f2f4f768a0c5f4311. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBLPF2502647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf8c26b1901771f505b1512d6a4aec255d961168c3a70e238246bf4563a9e8d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:04:34Z), 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/GBLPF2502991.