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 0xd68fd712ee2b2348d967dd1ac9ab8d23678eca77f1ae8f8a65d2a32d97e2f94b. 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/775a3cbc-534a-4e4b-bb98-6e7aaf996cf5.json and https://artists.proofprofile.net/proofs/artist/775a3cbc-534a-4e4b-bb98-6e7aaf996cf5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chill Piano Pop Covers, Vol. 3 (Piano Version)
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 0x3743a4ec6249ea631fcf84d6a36058e385405f8d4561bc1147bcf113dd318610. 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/QZTB82372627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8759a75e95e0b6f1c2b5a2f20e08eb9111a4fa3798ae268ed47a463863ad47. 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/QZTB82372628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde350c608e2417a16313c0a6217e4adbedfa72302efd5cf9e40f47b0afb84eb. 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/QZTB82372629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5d4352bbd4124870b7c8cd1e004af81eb1f1d71b402eb7f7df84cfef0ba79d. 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/QZTB82372630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7eac2b19355526a203c41614c80ff37d8317e82d1aa1a7572223a5daeb4462. 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/QZTB82372631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b36cf54c5d53a3fa05602f1c70998b99e3273c7469ccfc58e4b1c2aef58ed83. 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/QZTB82372632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7c15e2802ffaabb1f220781f620a36d414818978bc9501472ec83f1d1478e9. 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/QZTB82372633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76210219eb91d717ab8eeb321fff36e724fcf7021ed42b2c710c2bf423ffe299. 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/QZWFF2429394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38548512741ec754039fbe5b8c34bc1b57c5e8da4eae3aab68d834e9f845c7e. 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/QZTBB2460374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5521f89f36514d4f65b8517c57c5561e3ca3c5592e6ec5cdd922d9ebe2ada4a. 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/QZTB22440202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee580bfaacab1093f5d3e7539652666251778e5b8b1b64a2c2dc89ed692f887. 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/QZTB22440183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6060447fddcee9a415a26f593cbfde422d65c0ce4db632729b23421b0d87b0db. 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/QZTAZ2465740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09d9e17dc2eadd91bf2671d212dbddc5991178059971426aca351f6ebb0b76b. 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/QZTAU2449245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807dae3adb3a2c69f109da7c521ed0bbd7896dc369cf0d9dd8011e1a2fbdbf85. 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/QZTAT2427876.
Chill Piano Pop Covers, Vol. 5 (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04ce7a1a31740fafd665b3b81c5842e73be9cd91c1a155828c9c523a6941ba4. 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/QZNWS2418355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca2672415945a7b98730ad5f7e825ae6be15025e4b9953605d2b0e7e891aa2b. 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/QZNWS2418356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe515a66e0c8489da4577d77511fe860b347e5080eebff7c084a577fa1f03baeb. 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/QZNWS2418357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ac28b7571f7b7626a17643fb6081d4aa25a1e11e4a6589ec04f53b794965d4. 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/QZNWS2418358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee77361ee759a35c38fffe8947cd918a2c86a8a723fefeb3480b66645a62bae. 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/QZNWS2418359.
Chill Piano Pop Covers, Vol. 4 (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18218861b7d137a26fba7deeceffb205485461ace9cf14844511d32eb8df18f8. 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/QZDA42422753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4094ba61943b04d590e3874446971ceb6f87c50280a11b3903226c337412eb4. 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/QZDA42422754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e7a7232e3866751e4ecab4ce7208685d4e4e9c3cde3ff9332187901c015650. 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/QZDA42422755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708db6152fe82e31c083d33e279677f57c7fb60a9613386e814a8d7fc3c48e1f. 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/QZDA42422756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa879db89defb028373bdb7048cd05a2aeaae368d93e9353a8e6fa6b4f053c4d4. 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/QZDA42422757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e8d802f18cd5386c04d3a2c4933acf0a060b42fe3b06584bff4471bd9f5616. 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/QZDA42422758.
Chill Piano Pop Covers, Vol. 2 (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98e1191392923e9a8ddcec58ba4cba25bd0ad0824829f3e165cbbffda6fbd11. 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/QZPLR2326083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4275b1e3ea89bfd24144bdf57dfd1012b0129fca2cf772f38c5859997c2933. 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/QZPLR2326084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfe58a8f06d75552f31df3d621843ca835fafb71902de535e8de541fcf496f5. 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/QZPLR2326085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0421ee531435c345871d0ded5e1664994abfdb208d7a16eb0c089f0e4ebf4096. 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/QZPLR2326086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc49c1751d11b97bec554dd8c8d4717779e2f9aa6e479829096b4d86b44a183b. 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/QZHN32347333.
Chill Piano Pop Covers, Vol. 1 (Piano Version)
Shakira: Bzrp Music Sessions, Vol. 53 - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907a276eb70165e89cf72b859af329471c4464a0f6a5a91c5dec1ac7c5cc179c. 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/QZDA42366463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4f7d7dc71589d5d38a48f01e9d0b29dc9c3d45f52a5333f738763274ff7639. 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/QZDA42366464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bd280caf70a7209eef46b4ae2e1bfb03412efe1c56bd86fd25e6814d048d91. 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/QZDA42366465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb6b32d769811c5e97d0e64bfbde368c21f80a70332af71a629abf794f96682. 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/QZDA42366466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dab20a84cfc80ea10dc8ce349a44588a35e314168bcabbf327494a8065f9f7e. 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/GX89G2366025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6da174a9e8ed81ff866fd48f62b285566bfb7dc6f37e0b6530898a759f699e6. 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/GX89G2361638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fc37b64e668b990f09fb647d13d00fad3c25c0b578b43c9bbdf3b5cd07dba2. 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/GX89G2320331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17346589109a68698a68291ac706b9482d113311737098f2f94ea5a4287b9364. 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/GX89G2347236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd92137f6df8dc59a2d69511934cb5a25c24ffe26d4f4f8942ff458cde32b77d. 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/QZFZ32345890.