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 0x2ef950815cd95f1f0be5b294c5f2ccaed5cfd9c0f9af86f2627fe1828493588d. 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/ce7eacd3-c1e8-4316-9525-b6a4e637fc51.json and https://artists.proofprofile.net/proofs/artist/ce7eacd3-c1e8-4316-9525-b6a4e637fc51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Candlelight: Seasonal Reflections & Celebrations
Flora Gave Me Fairest Flowers: Elizabethan Madrigals
Sacred Treasures IV - Choral Masterworks: Quiet Prayers
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 0x687c6cd0173dd23929a3e3483b7b86bb906c0dc2835056693e001cd530b8642a. 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/USAKS0600803.
EMMA. (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9f71859535625048eb37e3ac5a53a795262e3351e942c8997b9d55ed659451. 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/GBAKR9312015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfde5ddd12dd3ddce8c0f45de860cc0dd982396686f76db96527e4337600e17. 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/USAKS0600799.
The Sprig of Thyme: No. 1. The bold grenadier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113db54e748b4f5e4d8469a65d840c3ff97a2a586d24a7e10249fd73bcb89987. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAKR9312008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f3e112324313805628fdfb5554f1072960b6b33c0fc8feae140e9a0068d2d5. 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/GBAKR8710609.
5 Traditional Songs: No. 2. O waly, waly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9f71859535625048eb37e3ac5a53a795262e3351e942c8997b9d55ed659451. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAKR9312015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe801cdd969d9d1d566dc99b9b7d898dc514778f1f159908987ab453503474218. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBAKR8410008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6b92de2f3facb31c1d000dc8c2ef522b7d7f2a2ed2ceb1609652b6a3d8da22. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAKR8710610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a01a2c3b64220fee0a7717b6f3bbbdcb27600ca4d9f27c76b2128124e1e7fec. 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/GBAKR9312104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856d145aa9c7de6a403ebb5eece21735424945c2228b78d89ad205ac6a3d6330. 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/GBAKR8410007.
Lord, make me an instrument of thy peace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8952f69791f20e90cbe60cbb596f54b5fc742e227ac828c57d5d6194d4153511. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAKR9011204.
When Icicles Hang: IV. Blow, blow, thou winter wind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc17417492f30b8d2a0d9e89f6cb75836669535e9908fda28080828ddcc4a7d. 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/GBAKR9211721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d60116cfade4f842754546939f8a0b38c0932d0e3822377367f1bd6a9b7a8d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBAKR8410011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99de69b56992bbfba0749ca7f7bd0fe0c3834a9cf6514d5d0e702884fdd2ce09. 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/GBAKR8410005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5443499708b50d6a45c02bf92bf5b4cb64db51e5e7cbed8745654aa85a9255c8. 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/GBAKR0613109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1753d334c64422b269953214142f8db4c0160a9013202948c97ba4f81712ae09. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBAKR8810706.
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 0x6746e23fdbca25fc3f157e16f98e5e239bd09629c4083033c3a11c3b88c071b3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAKR0112816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4adf30ca9cd1cc4af90b4b868174f62d30fe71646537916ca673c34a3659785. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBAKR9311910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa358cca3625d2697b4eb5bc1871fd286fe088631a060b59056e67cba4bbf365e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBAKR8410010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42fc81d54beb951e5e95d0429b020f749bd54c0db9bb7c06ef4c9add3803477. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBAKR1413720.