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 0x97d0b0a251464588acd7445d3371b09b3c3a1bbfa0a2560287bc7675dec89e52. 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/35d58ccc-911e-48a6-b6e9-4654d2ed8eab.json and https://artists.proofprofile.net/proofs/artist/35d58ccc-911e-48a6-b6e9-4654d2ed8eab.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 0xa0419d87a34c570478fbadce12a96870470df8a2bb8a63b1740737a564b8e418. 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/GBSMU5828421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c3d9f6e825e86a73320c9064d315c876b38745ed66da21f9ac74b9c84b275d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GBSMU5869497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4154337f4abd9e82abf757065b126db2575c4cb537982f94c4965a470938fa. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/ESA011856004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aca1e4851895af7fe52a8b215b036e6a5a7d44d35fa85af579b63cfd28be5a6. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/ESA011856006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920e42d707ffd58865422fccbe8bd0f551a04dc788d2caf2e7d01bec02ea7db7. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ESA011871482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3cca300747ad12414d85ceff491d47fc1e1ede0cab4b93139757d53d40aa7e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:12:52Z), 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/ESA011625147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc7015ae79257d242be25ce1b6433b5645125ad782741942681820db2a323c3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:32:04Z), 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/ESA012181960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f2911c8c5fdd3d7e3325351652331763585df4bcc66a913d837b1fcb5745c9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ESA012140962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7072aaa119e3f901d6f4a7260bb5655c1469d0638b6638909cf155aae38b9b64. 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/ESA012140961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42537bf48a9176728432b505fda10051e51a64936a5268816f50504e233a8774. 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/QZK6J2198361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f83223f984b30bd0b2bc3f77bde1509f866a1351eda3ec5345a6e1cd7599a2. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:41Z), 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/QZK6J2198362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21769b315d78aea1869def67fc456a15269b5eb0829ca0d3c665b519b8ec4042. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:37:56Z), 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/QZK6J2198363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1e776402246dace0b04f88a38e1dd0cd2779d5560db04f8d52cec7d3d15157. 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/QZRP52122230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ecea2d5f5d16ad029ca8084389af70a6e6daf7d696355a8cbe1068fefccded. 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/QZFZ42299142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1d269542b2d9746495d2d18da2c78c7950c2131256ac42a843e2d48cee3fb2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBLFP2325874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e543fa35d5cb8fc309772660f2ea08732da08daa5cc29850ec9750c8b4726d. 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/UKXN22337117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306477301ffc4212596a6d4a55e3ce5e15c7ddd3ca2db1640d17325ab30e55dc. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:31:43Z), 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/UKXN22458843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9145a1d08089b7efe17341b3783e0f3a0b854bf62914e0b07ec6da10f27046. 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/UKXN22458845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea240fff729a14bd13cb65d9e90972f534706928be8b99390c12e8e20cd5df47. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:52Z), 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/UKXN22458385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92943d98094d208719c18124142a732a9aa1764e02a94265d7ea639db644c993. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:11:06Z), 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/UKXN22458386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe264b9e4193a1b7d8151f9c09fefa01889993ae52e29c7f9d2a8e8361e1e387d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:19Z), 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/ESA012101377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59127c2cbf132c52ebaadc81f3c8e49c31ec58bded3f142bc3bf4d37432c79f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:52Z), 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/GX53U2556688.