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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8791fdf5dbb4f30aafb428291cd8a33c02edc5bb6fee1808a8b28dda8b5330c. 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/66c00c5c-83e1-4cf7-a7b6-baf333b4545d.json and https://artists.proofprofile.net/proofs/artist/66c00c5c-83e1-4cf7-a7b6-baf333b4545d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2d16072d2c214a91cade508a71f2de09c157b4179d358fe23e9c35fd58f6e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRG4Z0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b5cd3a8a5d2e7061121c085a1cbe402aaa276846bd035224471823cf7ad7c5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRG4Z0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5fb7bdb1b0a47dafa9d0c1b159c6f5eb05ea797ca8b3f8ae5b3d5878714085. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRG4Z0700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f353d232b658215163063439edbf3942b8e8f48531b0b698ca5e2cde95f373. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRG4Z0700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd5e881628a16314dc1de5ede7d935644a9bad56b690313274bab58eee0224b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRG4Z1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9257c192eeda49660b5cda09250e69cb45eb1e2d11a08624a5367e0c85883364. 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/BRG4Z0700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7c58aaab76a2946be3830022a59c496f63b1abd38bac5d570111cb2b67ff45. 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/BRG4Z0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9186338393c7de6f63be1d8f49c04a1ef0b8fb645671ba704d2c7428051d2c. 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/BRG4Z0700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56a99769b4126611ef5fd61bb0a3c76068addea4c81e1e54cc2116ad779e724. 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/BRG4Z0700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc406b1f0d00b084f4ce9cd10b8af584629a811461572ba57c19454d19a1b02b0. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/BRG4Z0700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080c34f7e25d5a0e20261dc511c2ba39e0a8b59bc0b2467601e218b3e043222d. 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/BRG4Z0700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa822e5bf868b48bd0feb5fb114e714c4170f9cc85caee4b2456e35cb1fee320. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRG4Z0700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef63b73bd397f0de070a30bc61062593fe8cc27e0ce60e24e89081ba1e9b7708. 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/BRG4Z0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134d0c16994ad55229d1abb64315d9a665713cab1f5e541093ac6b0eaa80fb7. 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/BRG4Z0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b11b76d98ba688a31da9d5e0d40002a8b42e25bb38c71db39d04130ebe4fc4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRG4Z0700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cda3408ebbd81385c871515117a873bff8625940a3664fe9f19e4530b14770c. 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/BRG4Z1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364471444744ab4629b55ac4c590ccd899014a609306a475b81100173fa0b595. 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/BRG4Z1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5fb857dabc814ee3ca7675083b3b8d9e93a9db8e8b05576a3747d1cf38d975. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/BRG4Z1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0075e57edcd59e7faf789500ee980e50d702e9cd1a8803516baabc21cc1451. 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/BRG4Z1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5fb857dabc814ee3ca7675083b3b8d9e93a9db8e8b05576a3747d1cf38d975. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/BRG4Z1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89727f7182e5c34b0e165aab8b579187f8a22c0e4cf8dc258c1fc3dd33ae8a58. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/BRG4Z1500018.
Cavalo pampa.2 & Música: Cavalo pampa.1 - Quem vem lá
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7268065fe1aa64cb5fa9d2726a8604a1dd7488d7e7e4833d64d443617526cb. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEWI12262353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189dbdaa9d6a5e1ae09a5b83e2c359ca8402011101f25e834675ae1b2e604c69. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BRG4Z2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349ee4161527490d8069a45c10d17a35bde097756f02ab25243ee0e38b5143b0. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BRG4Z2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc139a873449bd818a590d38a97bc2475e129ec46105ea36b991244a0fcf15ffe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRG4Z2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16075e143ffbecdcc91819c37ff871715f2fa5adb18db4ac0195a71c79ccf4f. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BRG4Z2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d7d2227c53ccb430c29ebc34731907bf8f5e797704d6c5d0de1ffea35c61b5. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BRG4Z2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b91e64ae8269f1901cf0afe8db84b5310c1a6db4d9e2ac73c428e94cbdc029. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BRG4Z2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be476529055968183d290dea3afdc63da8158696456b3e1fa7e400d2c032d21. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BRG4Z2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225016593ebcd556abf68b7e17777e4236f89576d85d2e7ccf9b47c0355a7141. 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/BRG4Z2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7928e445f140f07c395940bd54edaa50f1a2e6bbb4740a2ed277446e55e2a052. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/BRG4Z1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd5f97d5d403462a43471a8907c6cf531ac3671a4a95901038ff61c825bb2ae. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/BRG4Z2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea10f8fffeaa7939781817e70e38d7ec1793f7a2e29ab56f09466dcab6108a60. 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/BRG4Z2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de00ad24898972898b9b9e4e7c2f60a86d3f925c0e241443337f365cdb4e539. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BRG4Z2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee54fc715e2e444e6e471b3d542ea82db8d6fb5abe5c836921188caab194433. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BRG4Z2000001.
Quem vem lá? Música e brincadeira para o bebê
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ca9d427c1628aca0a37c9e2e85155b0cda83cf3d71a489f73d662703f0e51d. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/BRG4Z1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68edd589912fa1936b739e25805a762e42dfb2a300164e864a9050abe72c1e5d. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/BRG4Z1500003.