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 0x646984b3e3511d18f940665ebbb42dc7eb1332b7318aef11cc4b27efd7caa2a3. 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/868bd634-edb4-4dfb-994d-1e38c6246f20.json and https://artists.proofprofile.net/proofs/artist/868bd634-edb4-4dfb-994d-1e38c6246f20.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 0x8f92c5edbf0da00615ff4aae5d87726d8733c5e4bf39370d5bd2bc56a9320692. 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/GB8KE2212078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d7b4796707d3ade01b0ff921eb8c955863b37c95cef76569b07f454b168f87. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:54:26Z), 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/GB8KE2212079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc012a5b481b225f583527510da1444f6a8187b39a9fbf38d56038d3449587156. 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/GB8KE2212080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4b004d9269d9676dad630f7ddcc0e806ee0da038ca106721e4ffd5524e74ee. 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/GB8KE2212081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4b0ed21d701dc2ebe85f6f3990980eeeadf2ef4e36c413cc23c25acd3e9979. 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/GB8KE2212000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf211cc3f32819acc61fc9bd0dacb5e0d647aa176a02109381caedbdf9f17afa7. 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/GB8KE2312978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a63d17d3324b52ea49766089e3135e4e4de0e3174bce6eb515eb138a8bc802e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GB8KE2313420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225ce5fe5aa1882a5e45963b346e20226f1ff0d55ef2d459c4d2e896acf4f1a4. 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/GB8KE2325522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf267d7dff2f78e0db5193888d31ef1c10aded5baf366340b353b97d142243425. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:50Z), 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/GB8KE2402070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939ae36a054d4501adf8be33f6943cb7346821d885f04c2950fb88aabb5209c0. 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/CH7812405165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85be04c2fa1384b727f90c6cd11050f2dab1bda167d17900923bdf00b64911d1. 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/DGA082453398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3000462fb8c520af73c250211fb08127507d7f0c69a78979622086ecb7ba539c. 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/DGA082467875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb253f39a44ca233b27cf8512d092d22c0a7d1772f1595479fede1b29bed02f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:16:21Z), 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/DGA082495318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba5fc2664cec4cfed93be7c8a55699f935a1fcd5021d979188fe60562eee672. 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/DGA092479710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564258e564ede318daee58b7b52739764d32200fdaf004ec1c09fb262097cbed. 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/DGA0P2461641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99d0ee79690c4056a83f02e1f2561494dd7ee021820efed8c72d0295d80be38. 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/DGA0S2499265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248e4853c5b5171e9dd4b659739d2e9a6d063b55f2f2c459470246db75eef0d7. 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/FR10S2524288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cd316fab4b07aa3ad8b9b4300d623c841af476e66b106f30003aedc159a823. 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/FR2X42522856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb36f81386da6a95d54cee1d793c805968fc7fe5726a563ceb6b522873d1e12. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR2X42522858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7318a2fbf58e46de0781635fb93f36944bb71a0333fc3afe090e8b2bc2e3a84. 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/FR2X42522859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9462cdf77dbf2b4f3a2fc5380765165f10a7d687988b7aeba53f973ec3c4f8a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/FR2X42522860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f98756d1b2efaf648a77faa4d7d883aaca288604cca7ab1f4678caab8196f4d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FR2X42522861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a23ceaad349daeedab52aeb575d7a9faa1a288d36bcbdb66b911a86eeb7852a. 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/TCAJP2540710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241dea888e97fd2aeeb3baeb9823e33dff733b0b005bbfca2b52cc205f2dd881. 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/FRX452597628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa33199ac6300e9f6a2d656343383d62b74821f4e10d5cbc44594781f6ad8e8. 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/FRX762556357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8f43690a03b037be90a1ee0ebd46c9a2d670689b8c82fbd892368d60e55c6a. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:07:39Z), 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/FRX872568656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5d10d4603a6e0ad5040503f1fb73fc61e1d0fe9a294e3d5beaf9cac203d4b4. 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/DGA052500760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95816d917fab8c9b9c34c0dd59d05bb1f9fe25b458c7d8498a1fbac3c49f7953. 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/DGA062503416.