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 0xd103ea3a605599312ceaa1b14319cd6f72b2d9c21d5f97d51e7e3a3f5205aba5. 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/da41fbbe-bbea-472d-8599-a07b2bbabd14.json and https://artists.proofprofile.net/proofs/artist/da41fbbe-bbea-472d-8599-a07b2bbabd14.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 0x4f6e58751f1888c21cbd07d8c1456daccf78f278526b6628500eb3c1df4f3713. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:16:23Z), 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/TCAGD2251229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c040079d73ec62df09516e7e4b7838329918209b6687d3cf1fc42a1213055a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAGN2203417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cceaff90336932ceb185051042fca6ad1883a2aea3942d66658754b176a7e0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAGQ2238731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78e36d1f0ddcf86f96f04224f6064ec65ed4486ee5073fce4c5e2f9b6bf269e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAGU2313584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98653921e70420aaa36f765df71fd6fcf529cbb379f7b24cf77137173230531f. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/FR59R2335959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81416df3b5ca0a9591c2a22235a96205c0e1fb7832e20cfb7bfb13030fb2ff3a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR96X2303402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c61c772aa3050df52e2b76c74d25c16b6cd3d026adf8729e671d6cfeeaef05. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/FRX452355733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68163495485f284ed78827fa7d52de84962636933b1032c3fbfb148a4e2fd3ad. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/DGA052349771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ef391d22a5088408437b23f29e45fa562e64e6cb9f78bf356eac54b26df2d5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DGA0P2304648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea4bb01a74d3d304f6a1314846cdd224bb6ef948a6685ee060883189a20adaa. 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/DGA0P2381899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6322194c09f30d37499850dd0b138157a0f2735269286c2337a300646373012. 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/DGA0Q2317763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3225ebbea28b81bf9151609c1237647aef6bbf203493de319587766e7372b3ac. 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/FR2X42444495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416f2f6fba10a762b21ba232360c9a26acc9365ec8e8647ab02c9fbe245f3c44. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:44:39Z), 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/FR59R2417211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6affc6772f018f083bd6a5098bc2a3d531d64a7bfc81682b2fb0aee0e4ac8355. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282411160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054cfb7188d3fe049b04444583d7742ba460fb54e3a2947fd229e8c2d438075f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX762426871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b32267b962f85d697cb2ea6f7417ded0505957848b40937dc4d42ef80280ede. 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/DGA062494358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd7070dbed72607369d7fe325a1adf51bb19da5a4317ef3cb44dc700ffc1cf3. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/TCAJG2520842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be76b1838b5104b0d6d79f28c2aee213da7419f0e9079c5969c671bb03b36fe. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAJH2598484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20574b171a413e321b6aaccf84e58d8e4b91a8100a57a1697895654516c455c. 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/TCAJI2541108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7054c9f486f34d4402324e2ca7464b7a74523b5d81c586571e09ee1a7a6e3d2e. 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/TCAJM2515020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dccdb3fd57daab68af15c8aa6b74314b194d84a491ce3ec8e3e65d14e8bdd2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAJO2536436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd607119b1967407bbd17c830f4e7088dd8c684318348d3c36222353a880a5a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT65Y2515825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be25be6c90e06efef14e2ad3ab124e9c62ad7a6dbb14bff07a75c00106ae71c. 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/QT65Y2515281.