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 0xedae8b6d99d6e967ad1ca7418945579e0720876ddf1da82375c991992a998fb7. 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/3fad38f9-4de0-4a6d-b8fb-ad4bac42704f.json and https://artists.proofprofile.net/proofs/artist/3fad38f9-4de0-4a6d-b8fb-ad4bac42704f.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 0xbec5caa6a678f6cfaacf95efad0ed475307e7164765b5520bf45cabf11cebb87. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:04:44Z), 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/TCAIQ2480780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fad3bb22215707ce3660e4aad0d234f58c8f92cb5645c31df78a30f1951c922. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIP2480783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6d7902cbbd10ff3e06c66b457ca331acc5b43bc59f3141c6db9fa63f2455a8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIP2480785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbd2a18a7cc04b97cee1b1d921f633acb53ba64ba389d743430dc13213cbf09. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIQ2480788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad9f11e8e43650292de66be15e46aa0669ad27c698896041b31dd110aeeab22. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAIP2480790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29dc4a055801fed7b22bdd0336202d7db83b7d74757e987c0b30c10773d38ed. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAIP2480794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d3440dc4bba731597926ce70556ad984db979e0394fff3821845f4c63edeff. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:37:01Z), 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/TCAIP2480795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029ace6dc4025f8e80fd3c824764dd2addb5850aa4bd28206b4ecbc74289d6b4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAIQ2480796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9f4e2fc78d2636723557e63a8adbdaee05c5869534d5b007d4f290a9877437. 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/TCAIP2480798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c984ae43c20c58b5c27f62b86fd5cc0fb24a0e19413d1b80851d767dd5b3b08. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:02:16Z), 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/TCAIP2480800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6caa3998ff1245cd3382a4591f99fd9d3804af99b7d5695ca12ba5f3dcac19. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/TCAJJ2538031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ec49ab4f007c8d5055a54173033350e22dbb4165da40fa64d914420d835de7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAJI2538034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503252c306cb526add02b256ab8b553a3ce07f808a0d760dbdea2c42dedeee46. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJI2538036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d4d3ef10a629881c1707731b98779c407f374e30068c8bedafc40e0b3ab683. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAJI2538043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb158b67807c1c3f2df868084b4d74b4bc8f83ad63e5d13755f8facf464b110. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJI2538051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdccc7c59031ef3da91e76bc3e9051fb8926c3bee74102fe71a6baacc8905118. 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/TCAJI2538054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853b99d5c7d01e6d118b93d485d4badcca7140b7554f573e407f3305dbedd248. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAJI2538055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3996b74bd1901397317261b81ce949a89437503baefc1581ab47558246b3fef. 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/TCAJI2538059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd416986169babc7e27dc34ae90ba943d1a702cef64dc8e300fa8296d1f09828f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAJI2538064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5163828bdf250c851c6eeca70c41ba033cb6fccf8ccf736e89e5f5cd3801656. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:27:25Z), 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/TCAJI2538069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9db16d4673cc1d0bbfa880ea35ebb90cca3542885c79fe17eb5842e2cb5883. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJI2538074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538ca0bbe8ca9b54df3768309761dbffbe036c7e3ac7d10d48cd04c8ba3a33f2. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:34Z), 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/TCAJI2538089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf10d3bb28458d926ceb2fec3204e72952d611b6c71c69f8ad1e9526fa894f03. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:40Z), 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/TCAJI2538095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89cb18df9baf0c1966899a5f6db6fc447a72c91f2dcfcec0d642a7328935344. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:29:11Z), 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/TCAJI2538100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300bf27948e6e2ba6c29e01de027beac9bca3c031461efa7dac055b52e309db8. 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/TCAJI2538103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5060abb2a170efb9b57a7e7550414809c9f8849696791fe2a90445a8bc3e8ed7. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:16Z), 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/TCAJI2538132.