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 0xdabb9244da9888b34388fdf1098b17fda60da6cf7ccebddcc96045711b794655. 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/a0f95335-99f0-4b56-ba96-7d3b8be2170f.json and https://artists.proofprofile.net/proofs/artist/a0f95335-99f0-4b56-ba96-7d3b8be2170f.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 0xcfe253e76706b434470175f119db68bdbddcac27e50fd7408df750f667ac69b2. 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/SEVGT1301307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f0359436a306d6b18b0dcb932059aa791629b1f878de3a335dcfcc55b6ee5f. 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/SEBFO9110020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c0ea6b403174d4f79b15f94ca1076f61fa9c9fede2ef1c75df535f1f233937. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/SEVGT1301301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe0a9718ffd116e5434870cee5a997463d455c0d25c48add207eb222f0f8f77. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/SEVGT1301302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8173fd95209066fa6db90d49002482c842e50e1d6099c9f9aaa5ca4766fedd65. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SEVGT1301303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ac3484dc58c74c9268b8b79c73f862691433952cfbd9b8983943dc11ba9761. 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/SEVGT1301310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89d8c8d18880d13f566d849431f49f09b05f49d79c54dd021d4b022eff07947. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SELAA9915010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274d3bd228bea9bd9b12948d8f81bcdb92be05332a6902600053302ebd17a818. 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/SELAA0101202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d0164cb5fbf6f297e5b890350f2d8cee804a6daadae9d15029d02d03215006. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/SEUM71200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe335108e3078e4cbce8185b9fb76bf37803511d1e98d27586e72a9a4bc0d98a4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/SEUM71200279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8161a8e53d4ef87663ed8dc4d0b47e232af79c1e994f1b5e970dae7e99990e. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/SEUM71200282.
Where The Wolf Bane Blooms - 40th Anniversary Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e807cc41f63f101c3fe22d92add5afd98fa1b36e3839e3b4d6297a5dac194c. 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/US2860420003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f13d9ada66ab766a34c14b1f0e3e9f73576103c8301eaf196c5b000c1d0e2b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USZPD0610423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2fbac11c15e18d0cffb94c59df728b12acc71eec609902fe92824726ac22a1. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/SEY6X2200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f5fd6559a2740c5462dcbb57ac1ede54db94f4067ebda9914b59522b00531c. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/SEY6X2000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6b747af563de155136d4741a5e211195180e456102924081186c46c1737c01. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEY6X2000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f55f60f8017969818a6f4d1f3ec5dd5d2393b0e2972e816c7a457a8f3488776. 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/SEY6X2000110.