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 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 0x15b1b0195331561c6d0f033045a1d403987799b7d2a74e626310e7d084b7d85f. 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/868710cd-c70a-4085-9c2c-8399ed0ed3a2.json and https://artists.proofprofile.net/proofs/artist/868710cd-c70a-4085-9c2c-8399ed0ed3a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Purple Velvet Lounge & Chill Sensual Covers
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 0xe2b5a4a5bce848f4fccbc479b66c92ebdbe730aa5952dd4955df8534ef4829be. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITR552000266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabfc4419f04d694d9146754f88fb3d620f945b9775462ea706e1ebe38aa8b11. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITR552000267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2def40bf12bc1bbf196391e7a8e0ace6cfd9748c340751fd79651457ff73d957. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITR552000269.
Paris Lounge Nouveau: Musical Images, Vol 165
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0771ba11f0e6e0d3599fe7e71af9f92ec5c6a1db981b21388735ecf60c44f16. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUIG01800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cafa11b8fc01632ed5ed89786a2c1633b5891659deb872104bb3f5fc41c5587. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUIG01800009.
Night and Day Music for Cocktails Jazz Bossa '80-'90 Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8142953d7affd88e40d80c11383eb7063e90a3c1d0728bd02a7979130578dda. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITR551700199.
Night and Day: Live Cocktail and Coffee Bar Music Selection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c0824a53f8df2722fac57ed6b7e81748bcea21ad70e30d2eae1f80b075ce30. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITR551600145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68852f2b51030eb1ab9a094c5c5ab189b9a6d83217a58cf953aa658a051b8164. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITR551001407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891366881087e55f1a41148309ea6bffe5c474eb3781052bbd594c30bfcea9d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITR551001414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7064ea3dff544b73c4c966e82ab30f3ae79c91331cad2186ea5e42cc02ba6cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITR551001403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde2d59ad288ba0b27ea774b2fdf04d155848685cbf180be80134aee18dcfc39. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITR551001412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43e960cac68e989adda1208a1b215db2a96a42e3d4cc7dbcc3890c3787716e1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITR551001402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99105821b690a8d65089606369584bd2852d07e0664b8c2f48b76d970fe5a385. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:27:55Z), 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/ITR551001406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a6e4c470f3820a9c9150c530f5670fc8b03c2b743eaccfd0456030507ea236. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4R30602251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5b7571dcffb14516e29bf043eabccd26aab77fabbec9bc553cdb0d1a3faec3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US4R30602253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9d9886a1cd710b3398d65f2cce1b05b36629eaa8fe2086eb76bd3c08cacf7d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4R30602255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c09839bb6acbe7c1471ca8f017ec03285e807343aacafa7dd55a04bf0456e9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US4R30602256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e90db567b1d819765629d7528ba0d9a23d8274d4aae9d3ea59c3e347d2bb54a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4R30602259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0328119ebf027845bbe2e9d455f55bfb09dfda2a4abd6d1a5b67402ba7c28fb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITR552000247.