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 0x80b194949cad5f82b392b74bc14329ea4175ae893f2b7bc59dfb8f14e7a4eddf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43ef336b-9bc3-4df7-897d-2822b16a0cb9.json and https://artists.proofprofile.net/proofs/artist/43ef336b-9bc3-4df7-897d-2822b16a0cb9.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 0xd616f2d9c8497311660cba06a513932522b374d8211379be4a66c397d5eb95c5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ARF411701230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f2d752d6efe7ac9282c8bf94f8befdf16a000c5dc7ed70f76cbd8a4e881242. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF412000140.
Against All Odds (Take a Look at Me Now)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b83c11bfe3d7ba8e84dabd38ca6a632621c7886c44f4616dd10393e1fb58d9. 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/ARF412200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f43ad8e7d3314b68e470301e2b8120135c5bce62910edfb4c438496fb7a86d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF412100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af6d0b0b045e5b51527e62a352639cd6ae193a13adacf3f7ace10d92ed45279. 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/ARF411800525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94da2ad202fe1b23fa0f4af5498fd8b2911e5fdc36f14f63c9cb577c7ed3e96f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF411900409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98ad673e3d203bf9d576a4a2a925d9ae97acba76e98b476cec3dd4d49058aa7. 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/ARF412100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300d17254560e08aebea1f99a695af18b09979ad41c9032f9eece891a6831731. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411800523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdada9a930f085d4fb4078171f40f8393d5bad3dd14dbeff851bffef2cba8086f. 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/ARF411900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4d36b95febdcaf4e86908f969f12351e280d74338e69a37a39a5f1046ac53f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF412100003.
You've Lost That Lovin' Feeling - Reggae Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50d9e077d29f3e8a8027ca93c5b750ee967697913d6355c94e334e341e9993d. 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/ARF412200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95de707d7975d68bfe1a8932813bc8a08f3512f7790cb62dc13a1fd0c66480fb. 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/ARF411900381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9902d10f9da04a3b4e87d44b22307c8c52179e80cd4bb8e0766931814250aa9a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ARF412400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660d3041f824a294361d9028cc3e09b61e7cf8d71faea97fefbcee4868e5c4e5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARF412400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906e734870af09c8652da2643cff82f5c0662e3c5988c1a5a541299d960f715d. 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/ARF411300283.
Vintage Café - Lounge & Jazz Blends (Special Selection), Vol. 17
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f2d752d6efe7ac9282c8bf94f8befdf16a000c5dc7ed70f76cbd8a4e881242. 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/ARF412000140.
Vintage Café - Lounge & Jazz Blends (Special Selection), Pt. 9
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf720fdb0cb96d758505781d7886c444d57cdc0f7f3a7bc242b8cac8d6e59594. 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/ARF411401086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cad20f37d727c1efff60638656d27b314c3a73a54227bcd2b55d706176002a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARF411600366.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdada9a930f085d4fb4078171f40f8393d5bad3dd14dbeff851bffef2cba8086f. 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/ARF411900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd584fce7cb4601b7a1c90f67bc314e421af380cde390cc22429871ec774e1910. 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/ARF412200196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af6d0b0b045e5b51527e62a352639cd6ae193a13adacf3f7ace10d92ed45279. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF411800525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5de839020f58c35541d18ac0a9a024f3aa65655c645fd0667eeecd2bc4a839. 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/ARF412400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafafd9780fcae3e982f4134fd0d1ccd7de2e8c3cecfb0a0bd017d2a56d23074. 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/ARF412400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5de839020f58c35541d18ac0a9a024f3aa65655c645fd0667eeecd2bc4a839. 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/ARF412400191.
Vintage Reggae Café - the Definitive Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906e734870af09c8652da2643cff82f5c0662e3c5988c1a5a541299d960f715d. 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/ARF411300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf720fdb0cb96d758505781d7886c444d57cdc0f7f3a7bc242b8cac8d6e59594. 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/ARF411401086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22c2769a4e6b5e02c634c242f6f559bf85f11bbe4c3a2fbcb97a07ce1279b40. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ARF411500983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd584fce7cb4601b7a1c90f67bc314e421af380cde390cc22429871ec774e1910. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ARF412200196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906e734870af09c8652da2643cff82f5c0662e3c5988c1a5a541299d960f715d. 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/ARF411300283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdada9a930f085d4fb4078171f40f8393d5bad3dd14dbeff851bffef2cba8086f. 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/ARF411900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdada9a930f085d4fb4078171f40f8393d5bad3dd14dbeff851bffef2cba8086f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ARF411900290.