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 0x5648f238fc3814636390a6bdc0c3766c950c77537f8fe3a8e5f5347d1d6abc46. 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/36d989da-d592-4d3a-a95c-d9f97c9eedb7.json and https://artists.proofprofile.net/proofs/artist/36d989da-d592-4d3a-a95c-d9f97c9eedb7.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 0xe92f1b1a5ab324fdc66d65a47dd66a602324d64499519d4e7addd33c88066cd3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITFGO2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67ca12726a4dfbf1d408356db5f9ab54f8eb82a27826e87903ccb66df4f549a. 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/ITFGO2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35120c21feb6addd9fae2105bb7975937501697041e2c4779eec4c8f4186302a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ITFGO2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1e9ae7135d07d1e67f34d6026703de394c1d33f8a99ed184437e8286671875. 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/ITFGO2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae5c88bffc6211a45e37a09693ac0b7a7ba75784d2365ccbe06dca21a2c7d48. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ITFGO2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178f1fa67fe4c59fe8a8fecc1aeb38025b57a26a81199724ce8e385e1ca0631f. 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/ITFGO2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e13af4aaa358fcbfd44ef37a6e5389672b4a2a4659dca43860aec8081329e9. 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/ITFGO2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. 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/FRUM72400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRUM72400728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4580dcc6e2a5364f2a55eabd829ad705a6f890e53e77dd5228658f158b4161f6. 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/GBCPZ1813250.
Yamore - Francis Mercier & André Soueid Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5505e8e06c1ebc073bf6394d3606bc4846059b146c31fcca342433da91a1f9. 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/FRUM72401570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9f466512ca18363b2aa6cff44c87e4372bf5a2160b04aed1041bf590ad9d50. 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/DEBE72100195.
Nayine Oo - Nandu Late In The Evening Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b48b538d13fa698551ab71d28fe00a87ca964a789bcf223e928c15372500cf. 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/ITFGO2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3340aec414e37a5dbe632153e8fa9552d4bc852dd2d9638d9c9177096c3e000. 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/ITFGO2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4cb6287f6efd5206042e239138755074fbf69272a415ec4f2491bad49ca8d1. 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/ITFGO2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf5d7cc7cd27558c523858c684aebd511f6f31f304ef0cfc6fd0a15b9efe. 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/FRUM72400728.
Afro Summer (A Selection of African Vibes for Your Bonfires)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3111fca7966c35aac196db3fab6e0518c0728f643987b1e076388a640497f9c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR2X41480590.