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 0x130f709abe5492ab376e281b7df8748f68c0b261ff5247c32a5f4e64eb2d1867. 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/4fa3068f-dd8a-477d-b32d-09e822249582.json and https://artists.proofprofile.net/proofs/artist/4fa3068f-dd8a-477d-b32d-09e822249582.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 0x15cf971224616ce31b0779b68618185dac55ed47b0ccc0a2e03c2278071f0339. 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/GBMA21830205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458fef991d9a5156b6e211fa3a243ca49c26763fd8c3d4d71f3ae0017f337da4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBMA21903383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ec5bc0e11283b83b8fde88b20efd2d31a4a34592c9f42baeb2709fcf896d30. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/UKXN21957243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e1b16b7fa2d0b1f6387a1a2f9e3e211d1c51ebd62f956bb54547e7a4a2f154. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBMA22168532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5729b436198740fcbf26f0b963847874a400fe345ff9129ab6986a341b2afe4c. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/FRX872122061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585b8016e9e9ff850554b946a4208c8b995ad97169c5d2ba02ad926ef248ac41. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/UKXN22297480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44fc72d8a4f93a803abe5eb176c3839938ac731646294638854557420a695ff. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/UKXN22311410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83ad99f83cc0edb62e30b84aed97218c15d8080e12c30084647a11ce71d8792. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBMA22317910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b284ae56cfa765cc211b0eb1fb2c32f14cc2b091e8870cf50f534a8e0ff8958. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZJ842400226.
Toxic Minds (feat. AntsLive & joe unknown)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51536d1c8284900de3467260ae4c6bda32cdac53164c0a953ac15f314141e969. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZJ842400423.
Str8 Outta Kennington (feat. Blanco & NSJ Mali)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51536d1c8284900de3467260ae4c6bda32cdac53164c0a953ac15f314141e969. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZJ842400423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e1dca531999eb5622676caa571187361a7829fc85cd98163e5efe9d9d9fec6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZJ842400964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e6e77b68ff9c07de060ced108c261032e1c20956343aae5bda87fbd883ec46. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZJ842401005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44fc72d8a4f93a803abe5eb176c3839938ac731646294638854557420a695ff. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/UKXN22311410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9c0042077c13617ae5c94414a75a48f9f5b0d9e16f7a2d0de37ad868dbdc05. 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/QZJ842401012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fee29615c7a3f1b74b393591fda39f48736c5923e967a43c0636aac0db53b07. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZJ842403470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df468ffa2f001f6575d849f4cc471fd0ab751c94773c1d2dd181ab66c7291e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/QZJ842402722.
DON'T RUN (feat. Sam Wise, BlazeYL & Mally)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f65b90f368b1ba843fd1095fa9451505009c9b86921b0bfadaf38c279c0b986. 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/USSM12205874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901c9d1ed014279d8f5325b2a1631d7d26bc2321a2a9b09e97e643d22342d1f0. 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/USZXT2351355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fac60b7fdd2182c693dd7aaf2b9538b159f900f83188d09ba43235700bf9376. 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/USZXT2351363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60032a2e503320446968e23b2913d802e4e1de1a049c05ea71ebcca41f31a2e3. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZ93L1909171.