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 0xf70b9f8e630c4cbf361e255ddb4686e6d2760d3a8c10475b6387038f97523896. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77003be4-0bf2-40b4-8b48-6e90472a21d3.json and https://artists.proofprofile.net/proofs/artist/77003be4-0bf2-40b4-8b48-6e90472a21d3.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 0x09627b193355b7ed0c05bdae8959894c566630dc4b31d7bbc192ef736c318462. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QM6P42478515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74df638434ac716ca7b101742e15a7146f1cd60f9b60450c89003a547980685. 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/QM6P42478516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74008759c34ff47943b55e402567b5ae0d0a77591828f1bdae2bcf0109336cf0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA5KR2427029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff76c6671b099908a02904cffbb6a31828b3466a2a3ec5f9c822715717c0867. 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/GBJX32378043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac5500e88c0826f4f9ef9e07d38037017833f90a5331f0839e6acf70316ea74. 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/GBJX32378044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd016327d36225b9257343d00dd1f1667d42f8502ec0e47f538862cfb2d7e8db1. 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/NLRD52339086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5cdaec6b1a64ed6379fb26bba45c925e1ff6d16a77aca66d1ca4c7e8b24c66. 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/QM6N22361901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b00cccb79bef2d7102ea2ce5d44abf3837d003a806820abaeb9352e06e61053. 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/QZWDD2256260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c893a286c984407ea0af175b08ee8bc2bb2f748bbc247f23f0047db8137de15. 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/QZWDD2256264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cf8e6eacd60c0795a713dcc03ffeb6238bf1675c43a282358d9ed1550bdd1b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBLV62211063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e30f604fc63f6afcc85d1f80a77918cacc8efda51d01c51c4b3ee852e89e6f4. 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/GBLV62211064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fb0ddd8f63e822e801a5648227855620c90cf958795fdbbcd11c2848908ae5. 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/CA5KR2304382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5076c428d766356c6223779ef44ade0e675a99a7563f4ddb02349bf2fae2480d. 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/CA5KR2304383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abba2958a26ddd38e3529b391271f8371c1836d388264a95da2419d36976bb6. 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/QZP6S2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fda9f8a86ca2efcca8ca9b512d13446c68fca69c8f9fc0d887e15270b36ec4d. 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/GRLP12202342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb8787f3800d30af7023119a10301785d7c3772905b883fc42539e1eda04f9f. 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/AUDCB1702043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c9a2ee8789cf184c24119b642f8b140224aa28ba77beb889e7b17d032645c4. 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/CA5KR0018645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f33d6a15fab61f6990d4ebc02298144de55f91f74981d761fb4b7ad174a2ff. 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/GRLP12122066.
Sex & Technology - Mikey Barreneche Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6edc9b43f2368de925c895b049fac04c1bc25f1d14ef4445c245941d6d51f3d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GX3Q92018124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f015ded3fcee1f9e5006e5b4e18e12276cbd1fe067c9223739f249519e55d6. 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/CA5KR2509239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d325e0b0d78502705b1c93ed2eaf6eb977f3f5f7bfdcb3ac1b79cba8c8c27c. 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/USUS12400514.