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 0x6347a020b12091332e70d0fb82b8c83bb64b451a6533830c6e14c95a580a813e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8259b9a0-7f96-4710-8497-adee23279458.json and https://artists.proofprofile.net/proofs/artist/8259b9a0-7f96-4710-8497-adee23279458.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano pour la détente, le calme et la relaxation
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 0x0af4479668a4fe28890c9c6d9ef593c42085d01f26216d8a11e7fe18afb103c8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUA491811474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45810e8d8514dfa2b65356687eae09e77b1e7fe9276a04091522f2682210d3f. 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/RUA491811476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce5be2aaae0b708ff9d94740a22d8207abd89c8ba86db3c86eb3444a6de7800. 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/RUA491811477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf197dc9d8ffb8cdd358b0d5297a377f2616ac8d05f54632176eb1e1f972f7a6d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:01:48Z), 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/RUA491811478.
Piano pour la détente, le calme et la relaxation, Vol. 3
Piano pour la détente, le calme et la relaxation, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819aa431fd8812d167bdd5512ff8fcf3ad0a769b665148b4eb6814b3f7276a19. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:27:45Z), 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/UKEX32315632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5955342ecd6ddbbd3ee83dae00f760da7062f7aeff5f78a8427fe81282a757f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:04:30Z), 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/UKEX32315633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77476bfc3d5f09214190ff9f48aa7ea6de2afa26947134ef76974f89c9f32eeb. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:08:33Z), 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/UKEX32315634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2e31d2960fdeda17cf2a0115d056589e6feab7f37bac0d8ada7b78b67741d8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/UKEX32315636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fcff9f5b7c697a2cdb8265bbfb1ff43c355fb74eece672970b34240307b44d. 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/UKEX32315639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad340b4348d23549c5212970b91439d3a97fe5663209a4489c7b417188a4924. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/UKEX32315641.