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 0xb48d1bc6abd763ff19b3413e419d34da689021d571821f584bccf7320ed7d9ff. 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/e3d5abd1-6dad-41f2-ac87-104b48ae2329.json and https://artists.proofprofile.net/proofs/artist/e3d5abd1-6dad-41f2-ac87-104b48ae2329.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 0xaaf49fbb89775b004736adadd4504c9c6268391033cdd0362142001fa5f0b171. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCACG1586739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb998dab4201d66e43fc46463bf4932fbf51354580b989f740415ab944615e032. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCACG1586740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf1de46deec4f68e5e5f6b775167d9e1aeaac2e7e06b78edbbea2008e10b36d. Chain 2 (Bitcoin): anchored in block 957838 (2026-07-13T10:04:52Z), 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/TCACG1586742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf49fbb89775b004736adadd4504c9c6268391033cdd0362142001fa5f0b171. 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/TCACG1586739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb998dab4201d66e43fc46463bf4932fbf51354580b989f740415ab944615e032. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:43:15Z), 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/TCACG1586740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf1de46deec4f68e5e5f6b775167d9e1aeaac2e7e06b78edbbea2008e10b36d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCACG1586742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0380b91ede335860c688fe581eb416508510b5609436341cca32a43fe26ac9ae. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCABW1427153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13be9bc363067b1c97d573f1b80cda834d1f274c2c48cee4659097184c605ab4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCABW1427155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46bf27b22efbd775d4d41793a19dcee7829b6668bc3e9b5f70dd8b413ef16d3. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:58:30Z), 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/TCABW1427156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b73d2580163bed9b32ec6b5b96fa20c26701da202cb6daa59e396be2a9d85eb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCABW1427159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2160adf03815f51062ee72fb4a380caf895eb33e1b3240d534aeff76abe137f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCABW1427161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3408a2595352c5f4b6b041c7849aa8bdd482fa03a7a7a8ee475bdd29d1b82ec5. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:42:08Z), 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/TCAIV2447117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb543d5998bc30d527cf526937fd06fad2e68739100737218b5ba7902430386f6. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:24:43Z), 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/TCAIT2447415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63937645236b7e17ad090561eed6abe541639269d25e374729c69d4455214638. 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/TCAIT2447504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13be9bc363067b1c97d573f1b80cda834d1f274c2c48cee4659097184c605ab4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABW1427155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b73d2580163bed9b32ec6b5b96fa20c26701da202cb6daa59e396be2a9d85eb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCABW1427159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2160adf03815f51062ee72fb4a380caf895eb33e1b3240d534aeff76abe137f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T04:58:52Z), 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/TCABW1427161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd027a935b6514892656231aa669fa9ce739335e5b46cad581643a055408cd9c6. 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/TCACO1644580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4cf429798711cc856a48c2552f67783b789771b14c526a694926bc802fdb51. 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/TCACO1644582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012e5281e2c1ab337d8cb3058c0cc8046622bdbcf36793bb7974bacfdab8dec4. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCACO1644583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd027a935b6514892656231aa669fa9ce739335e5b46cad581643a055408cd9c6. 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/TCACO1644580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4cf429798711cc856a48c2552f67783b789771b14c526a694926bc802fdb51. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCACO1644582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012e5281e2c1ab337d8cb3058c0cc8046622bdbcf36793bb7974bacfdab8dec4. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCACO1644583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e43de394608b0a421ec439bbdc4313542b71c2ca62a10b70f5b7625d500ce44. 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/TCAFH2079925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e43de394608b0a421ec439bbdc4313542b71c2ca62a10b70f5b7625d500ce44. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAFH2079925.