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 0xa1306aeab378ae5cc656e05a5dfb0795072270f7086674a18212fd0d513b1826. 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/40e2c5e2-c228-40c0-8088-f82206849750.json and https://artists.proofprofile.net/proofs/artist/40e2c5e2-c228-40c0-8088-f82206849750.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 0x8f3074c5d69420a9ca35c5b2a258b009370e7721dd0ded134f23eddf0115750e. 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/FRX282123479.
Coffee Talk Ep. 2: Hibiscus & Butterfly (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24900c15494d548fffc8cfa582a54dfe7b15c7719b4ec2a3e41f7691b5e4b25f. 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/DEVF42200830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452ed9cdcccc08cbb4adfa7e52c14df54ba0334818ed4afa9a8101112a4989a1. 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/DEVF42200832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f76d27d86dbfe4481f1ecf4ebe7bdb947c14970dddc0b3ba8f59f796f39ab08. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/DEVF42200833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba23492e91ab2ade02e3d8482e5054f25e6ae31231b7ab9b217dee825995f0dd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEVF42200834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c268eb575ec3c7226987341d60b11055747d2df2fa70e4c3232d6a74443fa36. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/DEVF42200835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0f0ee73f579955e9b8b5f6ef8000541f250771b953a19d065f3a2e28901d9f. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/DEVF42200836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc6d642f7e5f380ad7bf2149506e8b040e895ff00b54ac671f60212f13ccabd. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEVF42200837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78016a01e71312230db47130e2bddc09f9e08e86cd6d4c8a1d968ceab92a5d02. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEVF42200838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388b434e7db0c493c9770ce63a0ef5445f2e58a7634ad66d6c99167ee39509b2. 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/DEVF42200839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4856810574dce9fc863a2a50b0836309a9b45f97c3054ac850eacc5c1539b72c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEVF42200840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b04577399773bb7032c53c498b2deed81a3f49383788fc8ffe5ce029ffc1d8. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/DEVF42200841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c9d50fd636e47f9260bb44cdc09b407848a19533609c78ec03913e22dd66d0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEVF42200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e83c9102340b3b44e1651f2ef62af96af2f3b11476296366e5a5406c48a462e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEVF42200843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edfe644144484b5f897ae3db727111b5b121363490f6200233d190474eaa200. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEVF42200844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78fec0721c606f0baf1ee77e20053bf30d63d0e63cdaaee3bed68f7e6368e28. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEVF42200845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcc863c45aa45de800abc28618d220519e18e7188e8a757b092af0792e2490f. 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/DEVF42200846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6217f4a7f313001d382f0533372a111f246efa3e212738b593544b7aa9279178. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/DEVF42200847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3631979c4214a2c58393d1dcf71a86d686724ebb4e890b74058d0ccd8ad303. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/DEVF42200848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49111cf6b36c0501bd126233a6705cb96452fdfd1269a7f34815334858c755f0. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/DEVF42200849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd153a371f97b79a64ea75046b190881f8534b6e1cdba35d64d89d8bb22309d61. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DEVF42200851.