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 0x375949f22166ad8c0b3f814e333f5eac0b4da4e5874d892ef36d42d497b08b98. 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/be1a4bb0-d00b-422e-bf69-c35ba73b95c2.json and https://artists.proofprofile.net/proofs/artist/be1a4bb0-d00b-422e-bf69-c35ba73b95c2.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 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 0x7a91386e4d6f8f3808cba8d0798460e81aec8da5cc4ba9276a3bcbec4932ad73. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/USY280765933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafc267ce71cbf87cf6a88e0fecf570190ff6302cabfb4e426d25840daf0d6bb. 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/USY280765934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590cd3ea64938b6613858a1e7aac9cf630013ffcbc0eeb4b9ae3c7bcccd1eb26. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USY280765935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043203cd138f6305dafbf9352f16a11c477c4d63a9eda7af0fb55e5e436b750b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USY280765936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0df09be8fa061aa6091ad97d115bf4fd1da40b40dc818a996813f8213077df. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USY280765937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3967855828ab6931ac7e03cbb910e2e2def9c5c465aab0778e9bc78c7f0213c7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USY280765939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9337fae6bdedbbf155001ba19813f58c1840d33d01fe409bfea40b163029622b. 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/USY280765940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5723f28cbf22aeb773c83da4ae2add45bb64ddd34c964b84e03d6ace7edeb5b4. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/USY280765941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07b5f1a964c347408d74b20d060ab8649a02594991de10ed82a7ba42157ac88. 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/USY280765942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd4cc1ee1a2f9f9b76e13bf8efd56c79a5fc1757850866440ae1184a926ea9d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USY280765943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c52e2ee7d5a156df9dd2988d3c6e2ae19cc021cc705ff2393c033dfe86beb60. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USY280765945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5435076764c0f4dc5938ed36f9595e76f03c647c27935ef216639f2be12c40. 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/USY280765947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f5fb67b676c4de436ef48302f1856809d7c5ab0605a4e860a1899a0f7c4e21. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USY280765948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cf63ecd50ab99b0224085eb5cb721ba4682a0048629f6d5fa5efdf1c36c75e. 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/USY280765949.
Best of Relaxing Celtic Instrumental Music for Spa, Massage & Chill
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e1b13b1e6a95361288d5c295385803eeba86a59bcde93d07957a6399ac6137. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/USJ3V1457612.
Relaxing Piano & Guitar Spa Music: Soft Instrumental for Yoga, Massage & Healing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44416d8e42d2aecab8a1bdaa57c90bd989aea343b842fce771d244b4ec790d3. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USJ3V1405964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb798afadb927566f62d0e8b6cc1c17d3e5814f5e1da8395b8c27cdbe2f4613. 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/USJ3V1405971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e9ba9f848f8cdc00cd6f5d15b53afee80b9b86bb4c4d398c24cb7a715cc8ca. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USJ3V1416824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d27c0400e99e07bf948036f673e61ebeccf0f365b0b69eb4c820aaa5efd57cc. 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/USJ3V1416828.
Best of Relaxing Classical Guitar Music: Soft Instrumental for Massage, Spa, Meditation & Relaxation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de5ecfebb0a734567acaa79f42f6cd71b24fffefa1a394a7c8d3b5650acb412. 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/USJ3V1315683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a775d3ddfb6c39b45475ef5f54ef28d42ea952c6632c2e6fb7c0f612e30df8e. 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/USJ3V1315681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eb9843d89a2cecf89caee86fe09bc51cea0b1363b1e6f89c9b8532a46decb9. 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/USJ3V1315678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe682078771b1ec06cb6e853a812ee62894f0f34d3d1b1a0bcacb8433d2c051a2. 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/USJ3V1315686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347c97ff9a44617a492069757ed59f60c8215d78ec78fa323e3180bf016866fe. 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/USJ3V1315687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c76d33740848fa495fcf06b8165e20299617a42b91624b6b50e6a3ba580d68. 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/USJ3V1315688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c23ec4767c22c815d0776e8377d88317324ee1b0e983ba556be25eb075d58b6. 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/USJ3V1315690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca543944f3fa941ba1ca918aee17c16a21691b3999f2d2c3c05b7ae2d37841ac. 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/USJ3V1315692.
Best of Relaxing Classical & New Age Music: Soft Guitar & Instrumental for Rest, Meditation & Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522d76d942e16b2279ad8ffa3170e58684b0eec967c8c1600326890c26191950. 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/USJ3V1316496.