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 0xbdd90882242d346e90874bfae7f7ee6eeab46a967722d35187059c214f00be23. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6eba3c8-df6a-4418-9c4c-ba7f5432cd83.json and https://artists.proofprofile.net/proofs/artist/c6eba3c8-df6a-4418-9c4c-ba7f5432cd83.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 0x1464b3da4b695857c011501d373fe6d2944dca370cbadfb5611e5afde22ec540. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/INN682101918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881fc662762045dc953b42d9ef49fc2d32fc2017250bc93abd193a3e7a86e490. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:45:57Z), 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/INN682101919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd23db6c1ebf8792b103316f4a3e358cda6706fd6e96cd77c1a760fc1c78ddd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/INN682101920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26f9d537d938ce3eaa7e8c04809f111aee5f2a8fb10788056e2c4f08f058499. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/INN682101929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96597af3075b703db913eff07682ec7f543964c9d23f032f90e97f3f861c2d6. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/INN682102153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2506d6ab5b9b44255f6444af6ad581fb4fc50ddfecdf07dabc2217ff03fc9617. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/INN682102155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a1e9315892f2fefd2201e26c161af04b7013e78758c273ce7a9528e7a4ab74. 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/INN682102157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd258e2a73a176fede6c88c9fb44b26fedb979c77dd6069b646744fb5f4d6bf5. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/INN682102178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269b77b020bef4c50aa500ae0324a4fdc7374e7026a5010e921c2ef27d4168e2. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/INN682102180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87517f826b1130cf2a6f7b2cc59309c3582b0d4228c88524f7a7b2f47121efee. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:25Z), 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/INN682102181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a0b59bd774cd9ad61a9e54d2aff6a4b49035fee2a595014277f4e1e583e5ae. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/INN682102481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27af54bb48520eb0c0cbecfaa43df3e9883ca00783785620e360edb052b959b1. 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/INN682102485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2c807a1f5d71c368d6d72b80ef310dc0dbf5e39d74f5ee91a4592f78753e88. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:50:24Z), 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/INN682102497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7f941692aa3407c6f886d073d5ac4abac28b6183e4e04ee67d86e3adca239b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/INN682102492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5030d4a01e9e835059eee0b04862e5d35dc9b1dac7306fb109c4361d99609e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/INN682103204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8417ef3adccc474946300abaa3c214f0508e6a4f24a103a658f96a66d27338b2. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/INN682103229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967c6954896272bc7606460493c7a4a8db620ae856ad1309a936711245a1ea66. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/INN682103267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13f21b6f69c1692c2460a17d8b58830d0bf71ed7e8a32793493631ebf023780. 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/INN682103284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784fe7075c90e3777d2ce2565a247aff3f437f7fca68cb067e6826459337fd9f. 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/INN682103363.