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 0xa7384679f66b0b02bd2fc019b86fcb9b942a69823e157a970f0ed72ba8f8c313. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad04457e-113e-4df6-a2ba-fa897a3abcc7.json and https://artists.proofprofile.net/proofs/artist/ad04457e-113e-4df6-a2ba-fa897a3abcc7.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 0x5d429efd008f2213b382506c3c16865e4f61135139e3338d312b923395500a38. 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/TCAJK2504131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4d1ba70cdcea5463d72913a207843a52d2752a3eaf22b7a6d534b2d2e78c2e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAJK2504135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc813f7b316c0341b1135eb055a5f9750898a10a8cd03438093b1bf3d68410f1d. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/TCAJK2504136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dfb29bc8a1f5f5f72840b0b0706ff3375470f24672e98da1d01fa819e6bd91. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/TCAJK2504140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bc1fb85280a6f4a1b6796e6e7f59431e3f5c869916f81e08a1530f042c64d1. 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/TCAJK2504144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4772dd96b38ecde99be5c3b7bbf7d2fa9f3bed5a381e178d879654aec93ec330. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJK2504150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb3c9790b3e584761e8ca96d566ed20aab0f8ea5454f0c7d7012bb17727ac02. 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/TCAJK2504152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511e972134a3ab8b1bc27238d1eaf06cd72452342279ce5c97b3a153384dfc49. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAJK2504155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d63fad03fcbe2619adbaefe75354e357420e884f63d6677b624c119fd5d11a. 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/TCAJK2504156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81a7cb2fcf9760881cbc62068d05dd964684f16d6e36e0336ce14cad13d31d6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAJK2504159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8637d5136c14dd3f2ab17a51121e6bf690a46d1343a85004a8e2180a61a1e85. 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/TCAJK2504162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6ee482be66c8adc9a39f7841203cb0af8a9b6406191b796e5c36d436f58416. 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/TCAJK2504168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e9afa6f624e74fbd9043d37de9240bf740d941bdd12f8cef1fe1b4353e1ffc. 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/TCAJK2504170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbc28627717a932dcc37c9c6d3fdde533a40ecadd10b57a9356b430d0d7c7e6. 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/TCAJK2504171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba512fb4912ba53e87197bef3bea64935a1212b50d0fc104e534e393e0b6cab5. 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/TCAJK2504189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251451d1d6b40a027f98bd093ee794557029acc2dc7daa91d214c78fdb2d3e98. 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/ES75E2506995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56af8fbaf8f802b6fe9e42c1edc3141f0a7b37a497939aee3f9cb2fc87127b88. 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/ES75E2506996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05eba8ad3997a3c1ef1549d7d52c00497568c1852fe27a290a012ef254ec13f. 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/ES75E2506997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d84a649ce7e279f3b4eda8d19c7231956b064a7920bf0af473a02aa33d7a9ae. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ES75E2506998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15416a20f59e0e6b5a314eeae2e5b630a16fe08c61c7b26d932af40e2e359c6e. 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/ES75E2506999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ccfa14e9ad515e73742b7f7aa4490fe4c913c504089c31f6d93441adcb7ac5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:00:19Z), 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/ES75E2507000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9358bf8f0ea76d6d4b34baacddb3fd1bbd6269a7db3f16e53fec6cf20b2e3bde. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ES75E2507001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47556e95f49a9059d2c7d1b748721f1f6c0b81e0f0ab9f80f1b374743c523399. 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/ES75E2507002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9d930f108adcc035cfd9b927e988a7cb43288dcf5ac9798d5d9190e2f24799. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ES75E2507003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6174e43907aa9f0b420105f2fa4762ccfcead92f0474acd1e90368d173a189a. 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/ES75E2507004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a841a5d39245e524f2d5633fd22a46fc01d71b63db04fe036b628bc8cabd15. 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/ES75E2507005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a768fa798353df173deb91b26b55797d295c191fdd35731c2a6f943126a0f5. 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/ES75E2507006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9ca0a037f4c9e016b3827430ecf244918542d9b3036997eac894620f39077b. 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/ES75E2507007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f3e0b6c31109da4ef0dc366267c19df3643771e551982ae4fa774de2eba785. 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/ES75E2507008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50eb2ff0036b187191dcdb12b438ff5281e9b10ba0ef3c06cc87689826f52cd4. 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/ES75E2507009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775fddd1d57c35e8d910e9c9e095acfc8c2cc8188cab61c8ab8daab926452178. 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/ES75E2507010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea4717847105080defd29337899bb378be9b7336c33a29e255e538d56a2bc97. 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/ES75E2507011.