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 0x656485422ffa63104f3d930df1ea3e0bf4fa81f8c47f56bb925780227e78233d. 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/ce64c1f9-c20a-41eb-a600-3ef7b816b49d.json and https://artists.proofprofile.net/proofs/artist/ce64c1f9-c20a-41eb-a600-3ef7b816b49d.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 0x4e7dee0494cc9c9a247bc15b4fc38f3897c685c8d47591549518c15d4a0caf02. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPB822103150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79480674bfc74ba912cd8c2d0f022e6e1688f52eb98e7f2a1d0d633b3ea49509. 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/JPB822103470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53e9ffa9819ea1a9576cfa9d17ccba8d67f5216d95ceb258bc096feca8ce0da. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPB822104190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e6e7661f213b4afcfa3c117a60209595b9df77774fbce40fd6e1a05c8eb25. 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/JPB822202410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19891d4d1216bcbc5fb397249bd0b1aabbb78a1435e399f373cfefec6a3e955. 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/JPB822203020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1b6dae8e546716207c80417ef86b9364b025519ad39675ad7d9e649d7534c9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCJPU2224063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcd7ebaec495a10545b00b2730b436345f2234cf697601753d030fb28140698. 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/TCJPU2224067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1c79a8cded8c5032fa93c7d825018e7e26ade7306d4545ab0c9f94405c839a. 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/TCJPU2224070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2afd483ee24662ba8409189e2ec161ee1879e1f85738c2f1e81ad888f6edfce. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:40:21Z), 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/TCJPU2224073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa058188bfd940d37b8bae4fe5bb84c7a4f0eb0ed6f481bc2bda33fe12f23ed47. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCJPU2224074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf990e72ca7f4fcafe92aeb70243243a3618ec6e182b9a321d83e33ddf8c6b52c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPW2362835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c6dbf8f8bcfb638654056f0dcc68e4abe2d7d4455f51eb24a1a38651eeded6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPB2467387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcfae126c98f75073371850f4201bf2ddaef01aca7a85962db6a8a03b5489f0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:28:20Z), 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/TCJPB2467389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8642b9e7d0599c0e5050fef75b7e0ccf3add27d822e3410a31ba2aa912c399ae. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/TCJPB2467390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9fa5b4f5e2535cfcf105fdee7ab70e31796cf929d693960bad2c4be6106956. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPB2467391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b6e65c69e6e428c6db8894a867e271a91c214e62d267383593e49e7fac14a5. 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/JPVI02402778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b6e65c69e6e428c6db8894a867e271a91c214e62d267383593e49e7fac14a5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPVI02402778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158d26bd403c8597c39a84ba6dc57755c2241aa98b3b6e93843d8b52d25c0b55. 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/JPVI02402937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a4cedb09cfa4438bf9a3258c360895def429549d0226495a715b9c735d433f. 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/JPVI02400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb0a8b25151daaa0e8b98b4e7c1591c5c127a32ead4c8a46c2b823212193fbb. 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/JPVI02400789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a4cedb09cfa4438bf9a3258c360895def429549d0226495a715b9c735d433f. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:36:25Z), 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/JPVI02400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a4cedb09cfa4438bf9a3258c360895def429549d0226495a715b9c735d433f. 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/JPVI02400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f278d0ca2ab11b336902871fd973ab5432dc47b2d490daa4e64f1b407d3b8f7. 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/JPZ922008537.
Veranda feat. Kanano Senritsu - maeshima soshi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbcf18b2192c34e78a47fd3515bee66fc71ab50f8bcdb467b06f14fd2d27ba0. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPVI02402780.
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