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 0xf7332c3e49c0c657517d96c403983e8a7583ed84eb5164302fef82c380e64fd7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ead7fbad-c3f3-45f0-93c2-15797105f2e2.json and https://artists.proofprofile.net/proofs/artist/ead7fbad-c3f3-45f0-93c2-15797105f2e2.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 0xa50120bc80e1759114d552dda748e71f46ee2310c2260bab4cd43b741b58b2fc. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWFX2525331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4b27df65a42ff33e7539b5703634a674706d6a22d9cbd5b8d5d2e9241ecf68. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWFX2525332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecd44427fbdb5a02b2d56a4df97f0367f32aaf12bc5371f044ac675e06dc131. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:57:08Z), 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/QZWFX2525333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3aa7ba89d3cd4cc78cf1e07731e4e63bf174448c7a2dfc9a91dceb3de3cabd. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZWFX2525334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1af87357e70d9347faf396061ef1e03f0c2a39d66c5c1128b2229eb4cb0cd4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZWFX2525336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ea8981920097bc90bf4c85613b58d3e0ab8b665bfe2fe91ae5882fcde890f0. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:40:49Z), 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/QZWFX2525337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6134ff97dc6d0eccff978ad9a20614586731c3f5eeca6561964a6bd2883115. 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/QZWFX2525338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0482232dbdc391c34ec2ac6f8a4363fa48a577438bcd0dd79e012d40df41b7. 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/QZWFX2525339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfeb99ced489e4ab25fc73d8ec277692dd9c952d9fa67dcbe297e7bcdba1db5. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:06:19Z), 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/QZWFX2525340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec23945b3d2e482d9772e7a9e6957bf4f720623e297811dd2bb643684737e9a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZWFX2525341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb658b1f969208f4d37dd5e3036073116770202a24e068cac5b158d4d7615b0. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZWFX2525342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e13cdaa9db175ee5df02a856f2e1eb2106e66037e225c9d14745aa8129702ce. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZWFX2525344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a4709a72f9489175c7deceb459c2e0bf9a797e943646e391f21349e88d8dee. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ762538958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd44149e19d785273ca0e3b237fd6cd012283801bd272f4649bc74e3fb568fc. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZZ762538962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60203a3cf442a85557b4a6c08f4453454573bcda6376b4e8ce623cf9cbd5982. 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/QZZ762538963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5964bd4114cae9f5b102ff2851b770fca6a0c8e723ea8e7afef92c0d971a5a6e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ772548480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf2a692c1a75360a37c49be30c22a5a019b66cb1cacdabcc01e07448868d207. 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/QZZ772548481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dbd2827f94391f05340e3350780437ce508032e1f905b23a4468b9838317a7. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/QZZ772548482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43069a30807830b568eaa7a34610df2867f7d0a6f6af009dd86825d9d3bc299. 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/QZZ772548484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf083af831b891580fc5595bc6eac4e9741ebf7e3da581e7ff2194709922a1e34. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ772548487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9866ac1eb56ee26bb168a3cd935b6a53dcddd8b873b9519c39a222050fb3754a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZZ772548488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac4b1c218687ea081dbf2adf980c852e119cf491c4ab058ec878612174ca13a. 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/QZZ772548490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc194b109540f867b0d978eeb7aa9c02cd195e9abbf8e7ec94d61a80c8f3cba70. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:37Z), 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/QZZ772548492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c442c71feafae7c67421b537150cd8eaf326dc8ba1d5d9ba4f6b2d6f9a332b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ772548493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e552b5652b8210ae648b338cfb2a2e345e447d1655c9cc74f9c5533634965a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:10:51Z), 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/QZZ772548494.