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 0x338c93f7b7e2fd2f0967fdb55aad2b2f771011484dde10ee15f6e3e0d876d55e. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d63a7093-214e-4b61-b923-ab382d6b1929.json and https://artists.proofprofile.net/proofs/artist/d63a7093-214e-4b61-b923-ab382d6b1929.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 0xa1b428e0108450afdd1f6e2ee9087ce4f29631581e56d54c18aa4bc6fecb9a43. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM21768641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3361529b376498b748849273900a67de98a80e57807009fa78b486facdca3185. 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/ARBWC1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9a8799267e2103a5d1a88e8da21d839bf129428bd6e621b384c3d6db9130b8. 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/ARBWC1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b16a2856d8f5421cf1214cd988caee58bde490aa0c767a50fab2fec54b3489a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARBWC1800012.
Jamaican Medley: African Postman / Roots & Culture / Ready, Aim, Fire / Rich Man, Poor Man / Act of Affection / Hail Mi Idren / Cool and Calm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7eedd56be3bcb49bd2e339d33074f1a2ac9ca4db1e78b2c64de96ff50b424e. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/USDY42041730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d76793a2cce3874c1a71b2e3697e7da9d740f8691e77ae0da10010acd8c9da7. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USDY42041732.
Lado D: La Bomba del Ghetto Inna Dub Style!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe325f3c5c8e1c6bd5ef251b897422e37c67fa7f8fa4139d785300087944af1c3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ARBWC2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e42a431d1aed241aa0323d9c5302d989a2ecbf862d127c07a78cd75062e2ea. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ARBWC2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd7a1fbdac021cf506e76e1e5ae8cd06f0ba931b48552bf40dd9fe389261c7f. 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/ARBWC2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd030b375e38cc728f6fad9ea8ef58d7f6307df02e510e6f8df663c3f831aff7. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/ARBWC2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aa87426f99f0b45304a5b960400567a32ce6d6e9e469f9e287718dfae8cb89. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ARBWC2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fa79a728aef75c81e9d8239c62b974e7f8d371a633ccd3e5c7bd680be8b8fc. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ARBWC2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6978856deca7bcb53e212fc42faeaf62b18d3807c83c68c6121c21ff945ea571. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ARBWC2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe325f3c5c8e1c6bd5ef251b897422e37c67fa7f8fa4139d785300087944af1c3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARBWC2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e42a431d1aed241aa0323d9c5302d989a2ecbf862d127c07a78cd75062e2ea. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARBWC2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8499dd1487d4cf9b26856163779f78079ffde3fb3bdef8413491fc7d7830f7. 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/ARBWC2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f04a118a4921f5e68ad68076a9ea05681ca09867aa7da59b8b93f3d0c0176ce. 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/ARBWC2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1647d4d8c89bdf822eabf821e9db8cf633978c1288cbad58f01c6ffe6f24d248. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ARBWC2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0f20ece73efa5f39661769b2fd566708d60b58f23ad445603d3b22e915988b. 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/ARNR81900002.