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 0x5b31a0203c15f6938e69b17ecc3889dade1b81480da3194ee967b49d985c646a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2275e390-b905-43e5-b25f-854bc9d465b2.json and https://artists.proofprofile.net/proofs/artist/2275e390-b905-43e5-b25f-854bc9d465b2.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 0xf6d680618d7499e6b09cf2f8ab3d9fdc4b170708703546bc43c8dd37931a7f7a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ISU110600805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367b987697b09ae670c9aaa476d79b4b616558a8b9a4b7321d4b9724ec0a7a03. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ISU110600810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35febab0576172b5212e4ac08c67d94c8fba3ef5b5c91fd4a48468775a19e511. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:21:52Z), 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/ISU110600811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf976ba9e2333c903ce8a1252900011f99013012ab5833a0f0145fb848f3b902. 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/ISR111100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8357a3a4eb959b4f1407fbfab952df46b1153309dfed62b296b36ef6466d1127. 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/ISR111100602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0383656df2d1d3100d2b02d43f0eb67cadc9485802d1219436f1e74302c1e4b7. 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/ISR111100603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36dd551636f790d1e49ee9f4d5150314360d17047909244fc765d1bb83d8ba6. 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/ISR111100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110279e455d9beeb01f8fe17db7b9a1092443870a07a0fe9eef54bd82437b49d. 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/ISR111100605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6377281d42240fa1802b80942653dad866186fc422a812e1775609554adf990b. 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/ISR111100607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd88426997b91125a70b320516b8ad5fe06b34005b142617388e4a4f5b9e1c6b. 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/ISR111100608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5472847056d65e3d581a514fa0a3fb272f4cf3b75077e2e6f9ffb42f51629863. 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/ISR111100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb5f803108f2d75ddd1ca7c5afad168373bbc7b7ca77215c6c879d75b2a7756. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ISV441844502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509d94278bcbdfef909f8a6ed3db61b11f717baa3fd129b379ca229fd3deb42f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ISV441844505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab09ce38a499a4ab85297ef9cd4d6d401cca3be1cbf2cab07c6b251297dac53. 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/ISZ120300301.
Jól Eins Og Áður (feat. Sverrir Bergmann, KK, Birgir, Sigga Beinteins, DJ Muscleboy, Aron Már Ólafsson, Ragga Gröndal, Katrín Halldóra Sigurðardóttir & Jón Gnarr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ff73d11942ec8fd0496644023c5dd5f09a30cf9ac69a5c5fbbbaafac8d24f9. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DKADG2001049.
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 0x8dd1466a9ca63945da387cc54def1274dc7ef351051d36074993992c01e01cca. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ISR111100514.