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 0x44e7ad91c8a0cb2d72ed154ba1fce9fe134674b9b8672d6ff8c1943833b0900e. 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/2deac974-523c-404e-b1bf-2e4d69a03e5e.json and https://artists.proofprofile.net/proofs/artist/2deac974-523c-404e-b1bf-2e4d69a03e5e.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 0x86bec3f26b728b74116e98c173268f60544ebbf0df782e382c3c79e2be3dcf1c. 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/QZPJ32155928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0a75188291c02eed0c45f2447b3886f121255050fa124e999c1c269a8cceb. 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/QZGWX2153575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11235d27106b88e6ddcde6e71d7610cfef3e9c95c776b5190016c2dc737afbff. 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/QZGWX2126490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5db09b46e7ee33842847693d707afdb0945dfbdba225d97d84b1e9b742963e. 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/QZGWX2180598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b0ebe3d49e45902fdac4e330a936fff3ae5fcc5ce11e872f46d7cd6e65058d. 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/QZPJ32112841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c86a28c1f47079e1a28595857bcc44343853a31b73adad936b4eb8b8b6b0534. 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/QZGWX2201951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88addb62cf0075a22dc8f2206ee12f3aef93ee29f0e712d339ace9a030ab9934. 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/QZPJ32188584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f741065c7ef8791788b78e3a20061641f87a911524a4478ae708dc3394832. 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/ITP521900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa740840c4f5ac7aec913351c11bff308e6ca661e0fa3fbd5eed8f60553e677c1. 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/ITP521900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe722e18391073662bf9d2faddc9e44e4ab79dd0705db1beca791f2bcaae05f48. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITP521900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf346d55ee1b96584ab7b90c77c120374d2c8aeae004d72041394b24a589b7ca9. 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/ITP521900129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3038142a2e05c587b778428273b36adf4e686969018c87d26eddb1468aecac9. 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/ITP521900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eb72f2a0740f3e6cb2703609be0137bbd4682d0b4d51e97066bc2cd91c3ce4. 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/ITP521900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d3dfacc33793fde2fbad3ec53c91386cb79c61192386d940f5f4f7ab4f8272. 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/QZPJ32372862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8240d070de965785652ec7c22e8c872e8225d3c21b2a0ad5cf0e0b14e89d9a. 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/QZPJ32352896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3db3f21576dc5d284919aeb8c72a3b6a7089e0db9bc759153d400c2bb07dd4. 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/QZPJ32327024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f9ac2ae77f869935c36aa4bf7719a62f2534685372e68d9b75829392ed37f2. 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/QZPJ32296438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5cadd500f5935165bb32228d1dd6a3cd97eae32301b6cbe7389b7457664905. 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/QZPJ32287330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1380ebdcd0b9c2b49c906fadbfbd25e451c89cfaa89f4a498293956c7276a31b. 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/QZPJ32279464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a53f3a25a3a860ea0c5bc7014cc5f90dce5aa28bb149d6ff1e45e40c2d8342. 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/QZPJ32266423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65a85cfd4362e078ca25d636c9d35f677895f6d33f8d5205935ddeac317ad10. 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/QZPJ32237691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bec3f26b728b74116e98c173268f60544ebbf0df782e382c3c79e2be3dcf1c. 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/QZPJ32155928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fa734bafff6f3b706f9c06e0153fdbacede428a517515350c398d7f0514a69. 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/AUMEV2209519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b5a02ea99f569ee3f313d6c3bb91e44494ea84ca38d4967aab94ea2f087800. 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/AUMEV2209505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5db09b46e7ee33842847693d707afdb0945dfbdba225d97d84b1e9b742963e. 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/QZGWX2180598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0a75188291c02eed0c45f2447b3886f121255050fa124e999c1c269a8cceb. 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/QZGWX2153575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11235d27106b88e6ddcde6e71d7610cfef3e9c95c776b5190016c2dc737afbff. 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/QZGWX2126490.
When I Fall in Love (Vocals and 7 Strings Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4401c54c543fe8073601848acc90de71adeeab344b437619caecfe3d464a491a. 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/QZPJ32410924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc301c51f1c0527b081348974680b1a3485bb676b25e317d923dfaa4668dafb1e. 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/QZPJ32401518.
Christmastime Is on My Street (LSG Holiday Mix)