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 0x16ef386f952c0ad8fd65d9139cd50f77beb5477f0e6a68e1a14db8f4401887c1. 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/e54f517f-a753-41c4-8ceb-4a88522d70a3.json and https://artists.proofprofile.net/proofs/artist/e54f517f-a753-41c4-8ceb-4a88522d70a3.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 0xe97f86385f34f84179e68d0bd660d80292b0c08dd6f24002bbe1b895dde7cf31. 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/DEH742425506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec8b368dba371dc474569fe208634841a7fdbe2eff1fd979c78448d5892a31d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEH742425507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091b70730bbc9f95309f8a4158676eb9807ee78d3e3f613d576b475cbdac7365. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEH742425508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864a1f33c2fd464120313585d73a85a970aacb429145105aa6262583d4500ea1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEH742425509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbeb4c96bc0462b1f9b28f62fc5337c814594806eb3a5a02326320911cc9a29. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH742425510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0607775b23a0633ee81734c29fc44c76ebdbdd652bf13d7b8fea63d10fb0eb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEH742425511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec84fe808e1439fcd9a8672c545d176791a3e58288759b4b10e83cbbe1936d89. 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/GB8KE2418593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38dbbbe18739e00170db903c7ae0e5d11e88a63a8fd3f9cbc97399051bfcf31. 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/GB8KE2418594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0686bcd7e28dd0957cd9f0c560e0d271a4b840a756fb82a9824bb3f007533eb6. 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/GB8KE2418595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1dfeed46eb79013cec99e55d73859787fc51e378f002a267bdc7b1b42a14ea. 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/GB8KE2418596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb335b3a9f271d471d9bad4a45d99771334c3cb7342ed5499c917fb981cf31980. 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/GB8KE2418597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129aedfe8314ff507b64b6dcc2d5773d0b1eb779e5b1d3605bcc71b630687916. 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/GB8KE2418598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf83cd579f04ff1d1f8e7ce27dc88349cbee8a18b6f00426e2cd50f6136b811. 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/GB8KE2418599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5963fc864dd467c077702c6db5a9985ca915f461dd360fd70942a7f43b48e6a. 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/GB8KE2418600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fab7f8e751fc8c1c9c0a6c403db17e8f9607bbc4571a9401b1e065f425e1cd5. 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/GB8KE2418601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e5f4c8177eed5f6674f4a0d0a49e0f13776ff6c798d9cb319c68b285fcdc3f. 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/GB8KE2418602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62d4e986d042b49b150ddfabc878e788feccb0a56177ca603f27629af2ab9b1. 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/GB8KE2418603.
Lullaby to the Stars - with water sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf752af544fd94e72bc1d180ad21e2fdc8aadcdd394eb648bf6d6fbec94018c36. 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/GB8KE2418604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68650e691caba80a1f9e1097513cc0e624c86907149c8416923ba98a8420db82. 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/GB8KE2418605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d086697ac89f6eb3dcd511301e2241b209ced4b53640ae874f3488783685cb. 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/GB8KE2418606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc76fe482b8ea80dba3dd0c318fbce0000da8195d3eccefcacd9286d97a24542. 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/GB8KE2418607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d35f3076eb754c1ed5d20dfc54398a2cb8e943f52ae6a481daec6a2a42a518. 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/GB8KE2420104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421c41b69381400ebb775390d5eacec52f7089ba0bdd0082a0f8eb5168016754. 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/GB8KE2420105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b379e428db8419bcfd381770ca2fcf815965b08c2f5cccb7590cad8477c024. 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/GB8KE2420106.