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 0x9da4db3859bc67623abb9855f3450de6d36a6663d4a4f744882e355e3b394f7b. 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/d441cdf4-b851-45eb-a4d8-efee21276267.json and https://artists.proofprofile.net/proofs/artist/d441cdf4-b851-45eb-a4d8-efee21276267.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 0xd4c8d9ca86f999143f20d8b4c5a01cea53897ff1f22b0c814d21c0aedaa23a16. 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/NGB5S2500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899b5ae06ee1fb1aa39ff403e61d4b2633ddcf8c09eec4bc81a6b8e994fe7cf6. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:56:05Z), 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/NGB5S2500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9719283f3341ad201b42675807bd8285c396d4715c042eba611eb38554597d. 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/NGB5S2500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86be00035d40a34546b3513852f65deea5c2cef18b2f1eee55db27301fa010a1. 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/NGB5S2500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987acd27a2b1504f31db98ec8c9e3466fa0c76e13c29461162fa69a3e74c35e4. 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/NGB5S2500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93ca971aa9864ab1f96f516974e92389da83947b4a7a968460fed81de4fac70. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:55Z), 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/NGB5S2500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3381428b374843d2d7247223eba5b5d011912e7c3c93d1f54ae2793e15f39033. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:05:35Z), 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/NGB5S2500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101fdfaf9591c4c5aeabe489f7b084164610340f73d0a35e80f7758c638a0a7e. 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/NGB5S2500333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be73bcbd94ced6e313b29af2648dec0bf58564369707f05e3e5995842024655. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/NGB5S2500334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028f9452d3dda6ee51cb01c1ca2d0da3133d057c9ffa2f5e46f475ba7e5514b4. 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/NGB5S2500335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0bdbd23ee52e2b20675eb55c63dcdb66fe0d65efb65ea1af36123ee5db8cfc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:58Z), 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/NGB5S2500336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7deba60ffab7465c4d0b0077aa639b62445a0c82aa15f79fa3aca1746705f414. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/NGB5S2500337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fc42c644a94526cdfaef3adadda4fbbe372942d9abad374e7b4314d18f9e32. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/NGB5S2500338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be1fe1d8fd386037e2bcc593b245bc50650b0c9a7561fcc2e148348359f0891. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/NGB5S2500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b789816ad796ff8e8edf108ce8f0352f248f732e5cdd88cce85b785025376d. 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/NGB5S2500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d61c6371602c772e384be98e8c1ce391e8bf4889d83de84f45ad07a0ffa88d. 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/NGB5S2500341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e832db4532a06e5e84d4c9f498b7183ef226d9ae9c2418031280ee0395b8da4. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/NGB5S2500342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9bc60a588a2ac8adf393eb0d7f264262fb2c112dfed881289d68c1887348cd. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:08:00Z), 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/QZAKB2460372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1a69912c4b90d307b3f412eee764b8211966e985aa48ea30be7149b4cbae3b. 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/QZAKB2460373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a429134a667c9647930723162ef6026a951025bfb2c4425bb583523116aea38. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZAKB2460374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6643d33805f49625dbec7a66b90468a1e3c254fe9b6f046790b6f50fc2f87f3e. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:49:22Z), 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/QZAKB2460375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70eabfd3dd9204f32a9cf4e04f005fb3115fef376871b9d3194bb652347453b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZAKB2460377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d815597133790d44ea7735d631f97faf85c6786166c77e6721bcc9fa1d854a. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:39Z), 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/QZAKB2460378.