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 0x436ec16bc901d331c058f6cdd38860082e7e824197aa50b9c747ad7b9a295af2. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ef9116c-e625-43b3-95a4-2e4d7cb57bf1.json and https://artists.proofprofile.net/proofs/artist/5ef9116c-e625-43b3-95a4-2e4d7cb57bf1.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 0x866bbde761d56decf76b902ced91ac4d8850df7301342bd58f00379b0037cba5. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/JPVI01422380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcc85a1e2365791a9bdbd600a5e107a5c8c3e27603ff6c9c2c67454bdd10ba2. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:43Z), 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/JPVI01422420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a6fd4fdb6375ad04833a9594b2dd7e966dac995b5ea1e14b0cad4d6c7a918a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:03Z), 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/JPT361900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04213124ee65d25345942b6edfaa6019da589eec5ee1646cc0aeb3dc73f7509d. 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/JPT361900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17ce1a32f1d10262e25211e947bad6510b367a0c166f044068788f4bb605190. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/JPT361900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080af5e54e01874e3ff3dfccf024ff7703e1fcf851c5baf341d044201204732c. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPPC02412735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9502491107b80c8205e1bd1a544740f00071938bed42eee0decc1f9e60b426b. 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/JPPC02412737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267b01c6a7fd45ae9a9a98c132a09f12df6cc8919a41c5104cd2223f562aa800. 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/JPPC02412739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3143effb6d451a2fbaa4c916e386ebd75214c646474a100abf2d03077d6b85. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/JPPC02412733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebfdaca6dd4353e1e4a3790e3e24e54fab13f3f728bf23df377d669e6cb128e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:44Z), 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/JPPC02412734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080af5e54e01874e3ff3dfccf024ff7703e1fcf851c5baf341d044201204732c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/JPPC02412735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9502491107b80c8205e1bd1a544740f00071938bed42eee0decc1f9e60b426b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPPC02412737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267b01c6a7fd45ae9a9a98c132a09f12df6cc8919a41c5104cd2223f562aa800. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPPC02412739.