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 0x1c24398111926bd9001fcde4e9c09bf9fd623b9c366ba4fff4d71b5336e927ff. 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/f2dbad42-fb36-4633-a23c-3c88d3f572f7.json and https://artists.proofprofile.net/proofs/artist/f2dbad42-fb36-4633-a23c-3c88d3f572f7.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 0xac4df8a0212065659e2c96a50fd2c7d7a8616042d59af82d093a0a2c4138080a. 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/USCGH1437751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf64398b864d7157c69fbbe301174712404c8676b48e480a9cb46fa86fa326d2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USCGH1437753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586e5d29ceb0006480186298287f5ad0636f126d560a23a44110d89769d3c54d. 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/USCGH1437754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe672e2e5f85ab97fdf6215c0fb9332d6adcb056879739c452b98805ebec0fad3. 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/USCGH1437755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce71794e9484b0a2b71a43c20025f8f807eb992d1029fee1601bca62b3f14b. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/USCGH1437757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c54daba26d857383356ede06edf4c63cf9edba2ec2b92ffaa1bda870686670. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USCGH1437762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78deaafe4574b3239b4c3541328f2914653bdf7f0b02ba9bed56a42dd56e36a5. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:16Z), 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/USCGH1437770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c2c8d1fb6d975814003757ddf69171dcbc845e87c3b8194337d7d632538b6b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGH1437776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639d36edcc58c4f6b4b8da162c95c083ddc6b0943458db2bed565ad6befe3aa6. 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/USCGH1451386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452f353fe3160dd09f032442249a488ca9c54a67c4d5ccbd469e889ee38baf39. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCGH1451387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf83b47f13544c39927f17798638c340aa4642440886b79060a3cd6a99e3e6ab. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:41:16Z), 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/USCGH1451389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c60c7b49b10af5e8b46172878fba89982a73a2aa041dbd687b662b8eeb8340. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:39:46Z), 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/USCGH1451390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cffb0dac5b8dc8869bbf8248e21a749ef87f981621fa323b1730076918c6233. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH1451392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5528cd809fbbf0bbca683e0f38a86a017cecb55a8b2f9e5d5e3b16e902cea6a4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:05Z), 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/USDY41530836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cc13a8d026227d0936fa256fd511ad9bff2717c6e3a21863e0250e7691aebb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USDY41530835.
Dragons Under My Bed: The Best of Kath Bee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e08a37e7cacf6a8982886f6aec694b0f71642cd186731ed9f1cf66b1dcdd19d. 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/QMAAK1741588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6ccba48c5bf85e35240db8f9a17ad51326be42ab687d5220cd46c759d1a80. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QMAAK1741589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bef29f8a315270fe18b057a1c28d557692a67ef4707693990f172cd57499da0. 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/QMAAK1741594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3c226720fb910199458e3f5f0f517aa2317499c79c754ebb3c68e5f049d0de. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMAAK1741602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c6a40ba9dfbcf3bb753327b65268dafb34201a9ac436c8f6925c610a9a5803. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QMAAK1741605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c63b97b56fabeb2c3fe6122ffc4a201db644a8aae6dd892f67cfc45e6761721. 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/QMAAK1741607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afa0e3f4b1b50ff647f62d2046d89b1a13bc1b78f5563bb7fed76fa1ee84817. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USCGH1890074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7ac5bc52e498930494f84d3aa0765542a44d6ce104ff748a3fad4a7dfbb133. 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/NZAM02100909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba3fad18b962c1d46fbb2f213936c020d9578beaadbf17bfd5f4f17c8e4c108. 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/NZAM02101921.
Simple Action Songs for Babies to 2yrs for Learning & Fun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c3c7b3b00171bf2b517003f8f2c3180228c738e2568d01eb939ff47f44ad72. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/NZAM02401547.
Simple Action Songs for Under 2s/Waiata-ā-ringa mō ngā Tamariki (Bilingual Version)