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 0xb79b1ba81a1c2e2ed74627810e20aa132f71e0f03aae9ebeaa02c675d07eba83. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15c2bf14-6e3a-494d-95ef-feb330f7c54a.json and https://artists.proofprofile.net/proofs/artist/15c2bf14-6e3a-494d-95ef-feb330f7c54a.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 0x6e84a58f87627f472348d097a510465ed701a5bbbd0817dfcca2d47921a06055. 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/QZRP42465517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984128e0dd4dfd7207acc356cf0a0836cd1d8807a10ed6ac4c5f3cd09f698675. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ42507779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87d11e418e9876a5414ffd34ed3b0d9a9b065660333ac08aac59cc3c72f3946. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZHN62555257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9566fc01b8486f837a4ad0bd467cb693b96bb2c08687639016b0a53ea91e3877. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN82552989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1676b00f47e702a94bfbab8bcff182a5a9a9b60d5c8117a79a6c818fcf09d947. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHNC2523558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2744d79f42f9458eca771a99a5e5eb18ab01fae834caee8486aca04c8aca405. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6P2539048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69144bb95f538482c2e177a588493978ae56b319dbdc7ce45389bee92deb1342. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZK6L2513847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194c275d2eae71d239ba1cfa98cc117b8bcc7ce09823cd270ba7e95fe7a6356b. 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/QZK6H2519998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226ce28eed4c857a52f63ab82989bd188631402cc813ed0db9d5868405fb2969. 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/QZMEM2548181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c4ef3bdd7f84896e48f2044f88ea4e549edaff998398c6d6218708c98a63b0. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZMEN2594477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240da5addd1f2be6ffe91d76048c4d934885b27dfc24c0c6a7257cc358931738. 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/QZNWT2520568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2763552263adedae43a5f3be3dd5f542a7d4682bc7f3eb500c285970b1244795. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWZ2530772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79751f36464c69d3026d1d93bab7340be38c7213c5a60d999af22579d1b129e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTB32500480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2468d63906b73354f18eaef7a826aed840bd408b0cda54b23aeae92059159180. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB62503009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d756a445c9d23fec87335133b83545aa4ac281404c89fce21aef45379e92c8b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTBF2562027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf203bf92602078ad8976e801dc4eee46b2675b2f9126815d377dfc40e8512302. 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/QZWFG2584837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db6515ef630d8881a4ca682927a8fe09846622cf0ad80c8d1a7b0aa79b1f773. 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/QZWFL2515700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dc2d87c475c1e252b0c4bb21a42ccb277f4671d43d341a81d349fd181b979c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFS2599130.
lonely days lead to lonely nights (25-35)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05027db5d84a9d53a5dd3abef5cd4b92ae1f388cbcf95bb1ef414a3dae31f1d0. 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/QZZ7Q2519214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2f16df7981f62a49b83b37af4c4774bdb54e2412d7473c63aa8e9a7cf35c48. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7T2569680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8092898ed7847b857f6376c41d06797703af2c48ff692e96449daa88252f068. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QT3EZ2599336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768e35c44bf2b783d7010baf9196235242608e08f85f18968c6e46c77a8023a3. 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/QT3F52593981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4e3b883217143b1d402d2bcf197d83893ac798c27eb53ab00fb6ba8dba5116. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3FA2507408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba25a7d1acb2e7ed5bb8aa7a079d2938b737297670b93a1af76736f5b304666e. 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/QT3FD2598330.