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 0x7015d45ca2c6c487baf3c1ca9631c2e14d1fb39570afeb46bbba8ad69388ce5d. 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/1cbf9311-9c29-40cc-a152-ac123330ec18.json and https://artists.proofprofile.net/proofs/artist/1cbf9311-9c29-40cc-a152-ac123330ec18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best Irish Ballads & Craic - Volume 1
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 0xddc3ccd33bd00e15e32aae51f48294995aa327b3d39302fc3c223d8d67df33cf. 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/GBHFP0900582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897fdf7d32f7298b7e9d60472092324eac18eb94df8e98adc023ac99235a31bd. 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/GBHFP0900586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75e0c554913e52b2e2088c211ba2dd506c96f93547cd0e3b8c62f81c5106357. 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/GBHFP0900589.
The Best Irish Ballads & Craic - Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a2f029e025c43aaa67f9f466fb9d222b9d1e157562f4c148496aff1be4f844. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:27:07Z), 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/GBHFP0900595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865e14315d491f29cd42585ee16019fb1d288d5e163e627bf91d7170f28cea58. 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/GBHFP0900604.
I'll Tell Me Ma/Mountain Dew/Mursheen Durkin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82777ecfc06b5738cf3b50d332386a1459214d3d3fb62e18755f08521370ddb. 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/GBHFP0900567.
Boys From The County Armagh/Green Glens Of Antrim/Homes Of Donegal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd55e315c73a5fb6ae6eabac0f6f0ec51b4a6efa897d48aa1ad7b88f09daf90. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:52:47Z), 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/GBHFP0900576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0898eb391830b89b80e7b6edee1023d14380824c1a1835d7ffdbf1233e10ff69. 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/GBHFP0900641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4152f129753a49cc0a3685ecce767f8e536bf90459444794219c0b0c91d62ed6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBHFP0905902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b607064acfca7bc3d104724d39a26dd5d2b7c99c6206c4ba0f3555f7f394f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHFP0905903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076dc9504a8f3c4b95618eea303b88c062c99e62753d7ca0477673279bc4e7b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHFP0905915.
The Essential Collection Of Beautiful Irish Ballads
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06864511bdcd17ca872df808b5d65d0d719b0f85f587f7822856a2f964cebb4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA560788697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea0a5be698dcb7cac456499cf561b592fce6d4a79726cb2e8ec1e71121e7886. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USA560788698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39af162f8a473d84b30a051d67459d3e7ba475446d9b0c6e8380c2472205bf08. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBHFP0905904.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8773ebcbb4fb8e3cf8c638fb07996dfb24dcc017124518d3c1bfa9bc7e5967. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBHFP0905909.
The Best Ever Collection Of Irish Pub Songs - Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce379c705622e485fc30cfd8c251b57ba896622db333583f0e3e90da229aa2b4. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBHFP0905183.