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 0xbc3b8b8a84f007b60b624378ac75c34d5c18c310cbe7c8a807d4ead2cff2aeca. 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/b9813c24-fff2-4542-84b2-217f67e87a72.json and https://artists.proofprofile.net/proofs/artist/b9813c24-fff2-4542-84b2-217f67e87a72.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 0x53831c33f984926ea47f9134da19fe9cb7bca395bafa38339301e18fa67dc1a7. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:54Z), 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/DEOB11000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9ce2c05073ca0d99942523f2d11781209f66311009acbf3865ce016559ee95. 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/DEOB11000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e81bf4afca7837019b8fc7853c759cbde349dbb2f8c5f8d020622dded97e44f. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/DEOB11000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303fc2bb305b956f29dce7712f3aa6c29511ceb75bd9f61222ade4ba29fb2f78. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:02Z), 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/DEOB11000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030c75e6cfe9b3327cf15c15da98d41efec58dc25b4ca0bd62a5b668b25d497e. 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/DEOB11000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5934b8bf53be9fb276ac9664b51599b00d0cfd649b686e3f45a7bd85ea1cae9. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEOB11000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d11b2de779754d45c9da8d47b8d496fb3106d52912b1d7045c3178e30e07b10. 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/DEOB11000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e147c3f3a50409ea655d0fff5ab84b1949d3aaf74e0744f3c9e80e5269e3509. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEOB11000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9a315299e66be220228320e6f5ee3aefe3f65d731731b9248daa485b7e3599. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEOB11000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a405dd4c93e652a32f249f7f7828351626c5e4425876117d4a1a668bed8106. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEOB11000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea09e9485e8470eb120a19dfd14b38f098538f7055ccbffeb5afe43d31faada. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:32:03Z), 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/DEOB11000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e0f2d6b183024eeae967e5da5dca7749954a8ad0fc57d61aa94126152b0499. 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/DEOB11000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565e694c056e5687114af94c4762a3bc7e074286a299c00d7fb753f0c8f3a1db. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEOB11000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafd9d91ccbc82f1c5251c971a503bb5563c0f48380392e79585565ad0b3d00c. 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/DEOB11000167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4bfcd7f865b1d206357ced918043c91946cb1403cb765f78ca80e895b94723. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEOB11000166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b503ee2d8dd8a542e35f3cfd1ba2006fc7c7f80f8a861b22c5fd1523a0d89b. 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/DEOB11000164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2990d4022d2edc227b11ca7e156c02bfc95b8bf7380a9f387428f91cbcc99fa4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/DEOB11000163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0da211d7c9e9fef3abb902586f4864d5db36a798632c8a13f1c5f0cffa036e. 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/DEOB11000162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee16903139c00dec699d28cf296527f826dc36da081b9042543293a0741f4b2. 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/DEOB11000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5caeaf018c10ff4ad42c3f507db8dda13d5ed35a3e966b3c7c2d065bb9437b. 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/DEOB11000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652273e362cf7761f0f9aaeb992ec65a87aae121a57a7c7c7c8a4531bb79f246. 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/DEOB11000222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9b7e20d40acc176c4e4eb6f5a196fc8ad19a5c04d5264288fce27bf8504c72. 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/DEOB11000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2671e091010f689508bad5ef0604fa51eb2f9a3fd50d62ac4d2430ac41337f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEOB11000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1357dac70ea2fc8084fdaaa38e7c6e124b78d2cf97086fd11e368bf3c81c6e. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/DEOB11000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe638e5742e5a9a8b13d5541d6e82314c8a6f09c24aeb99ce9cc02107c603cc56. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DEOB11000221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489a2666c22febf548635230bf0906bfd6f1bcf4dafd1d4685a4c06bebc87ba8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEYW82410369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c4ebae29ce051f2413fa62bb919b64427ac72d27bf755106bf7ee83da8d4c4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEYW82412580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1b0c6985b68efe8282d8eea8d7fe0aeb95a5f9bd981a06581c95a0582957ab. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEYW82414458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ec8a33784cefd0eb65985834c8b9acd8b572db9fa5179d6c5ec30081445bf3. 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/DEYW82414459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24c1392be7ac2857c0993f2293e23af3daf1609c36ccca86cf3d6eda561fec1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:19:50Z), 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/DEYW82414463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0352f56b14e0fdc30ffcf3034d6ceaba5923c26dd23cd255e2d881cf05af7ed8. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEYW82414464.
Tougher Than the Rest - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa774d5a56992c23cba498da2ed607cb0bb6be3819319825ab3417c3ddd7a5ba0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEYW82414465.