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 0xe1262d8ae9c0d048f3bcef954ec4e96ef7555efaefbbf89e61c3f52f2d9aea8a. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02fd0f55-b0b2-4b47-928f-49f50dd88cc8.json and https://artists.proofprofile.net/proofs/artist/02fd0f55-b0b2-4b47-928f-49f50dd88cc8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368a3b9938b4730a6933f45df2af1bd42bc56c6db29042b35c26a26c5dd361a1. 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/USJPK1200016.
E Vahine Mata Ninamu (feat. Aaron Kaonohi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66f42ad273d704c63d64ad20e30be4dcf11173e95d01799bbe33250e2666d95. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USJPK1200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8a02551f3890821cf54679ca55a9aa6a4cfe107f8615824e2976eff83977cd. 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/USJPK1200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e333d4b89f0261628c33287b3bbbcdbe85cf049d0f7c3deb301a9b761ff231. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USJPK1200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fe64f1c8bb2d1215f0439e80ad3ba28239518dad3dc5ea97928d83e9ff680b. 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/USJPK1200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71deb07af58f28724b43d2ff0c0950fd4cf0ce2f7d759307132a69ba054afc3c. 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/USJPK1200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3755636a89cb23c582b61972d4591ce37c41a39fe5a58dc656236db7ecd6ead. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:10:15Z), 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/USJPK1200019.
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 0xd5058eeb905a3622e69e6c925b9726bfa93b982050d5b6ed00c613d594d36f92. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USJPK1200014.
Afa'ahiti Vaira'o (feat. Rodrigue Tetuanui)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e4f612abe59c8fe3fe41235e134b51de648b5114585c66db233e16d2764c20. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USJPK1200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96adcfd3a840c2ecb02f99f1aaea41b001c8cce3a67670a77685b9ce64a742ea. 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/USL4R0749686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d05238722374e8b26848ad80159ebc858873831db131631741e97bad608e47. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USL4R0749693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6f5697b049d2d88ecc6d7c903a112f3fd4da771318c9c3b240fc8c35ec3ac5. 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/USL4R0749081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2841fb090b348d6374b57d2cc469ad73eab9adac38187ff8637865e7234ff0b4. 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/USL4R0749083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73fbdeacf83e9f93635ad015f9fda196f48ad76c599decd759f57ba01ebc49b. 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/USL4R0748391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fda1d48b32ea4426f896a66aa02d4c2bde4e95cd5c8d7b08026b043bbc7be70. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:26:04Z), 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/USL4R0748377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8881284d3d38417e659796f8e2783450d2a09c387793a0389dddf1939c65ce99. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USL4R0748381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfb33227efd7791e5abda5f67b249e0832aef42b883fc7429fbf63401cdcd02. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USL4R0748387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a5fc97672f026b708dbdec624141e026d8fc03beefc34685fe2fa6ecd9f916. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USL4R0749062.
I'm a Child Again, Needing Some Help from a Friend