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 0x99f16412648d03e13e47d538e2c6f2ab478c6ab5ff444f4b6cc9580eba3c58fd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be751667-5273-4e61-b96c-c0b1794fb751.json and https://artists.proofprofile.net/proofs/artist/be751667-5273-4e61-b96c-c0b1794fb751.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 0x176c88a6b222a2eb5d5ac40db14999da4fc7666e38faeacb1c53874eea33bf44. 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/QZK6G2475219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f124204ff6b5098fbcef3acde6ec0ce73f826278ab14da2e12c97730f877e9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:41Z), 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/QZNWR2400569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ece6f7f7021e53851fc4dd7f6f7ebecf5f4ad4f198b192c962fa4332e5b7be. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:55:56Z), 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/QZNWR2400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad61b359a0e6567514cfc2cc62b711b7dd592808dc63b2d29d10af0380f55675. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZNWR2460847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558683c6f609d4675c719d2fc2dac432bfeecbdbc3408c1b25b2af9872fb8b57. 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/QZNWR2460848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0046b699efe5a33607b1f5cf349d95f7b29a1801629e475fb365713d3f06b418. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:25:27Z), 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/QZNWR2460849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ab68e970f7247b1fad3ab2375c758453492280976afe9f88a533b9a66c9d51. 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/QZTAX2497233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fbd0d43959900eb6bf451b81429faa7ce70dbac0ff93ef2776b58e18399931. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:16:38Z), 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/QZTAX2497234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd801e4e636cd28fc154debc535426be4dd6c8ae0eba3e83690d688e02bcd85e0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:45:13Z), 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/QZTAX2497235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c85bca8fd574bf8fd5028183f3c9cfbe1991ba948f76b34230e68f6bdf3df0. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:56Z), 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/QZWFL2475881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa887787a4cb7c8addbe8c9e538af2e2bb3bcd0b1cace7be3c472dfc9e1e7358. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:08Z), 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/QZWFL2475882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205419c988ec558278470f8c0679118af548737f31738cfeef4876829cefd3fe. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:50:07Z), 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/QZZ772404112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd404ed1130913327529469bf5c9c24deda6890a976753d8fb78ab0cf95cac3fd. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:03Z), 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/QZZ772404113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ff27f7d82b1eb6aea4784a95dcbb93f1c3395641232b11fb02ea0435d04649. 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/QZZ772404114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8961ac26c1cdc0daa26e13674ef53eaf3e684986dd4f47525bcde765d29885e6. 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/QZZ772404115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6724d75c280db4d8240a24cb7b9748b6a9651ce70e683275bb563a31baa11fa. 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/QZZ772404116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d27d95beb2bd9c850621fd68973ffe27ce480f290b8ec2a628eebb9da84f0d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:38Z), 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/QZZ772404117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520f46d9ef05bb412246ae9930ea200afba06f9a36f14370012f1ee76ab1cfbc. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:00Z), 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/QZZ772404118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c08a6b5b3ca9aac06dd322c3ef143b4f577d2ba894bf8c54d9b51b96fb4daa. 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/QZZ7S2405607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b6924f844af4cfa04ba3fe8f3fa81b0839c78572f684cb59383cc190dade6d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ7S2405608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceaf71a42cca37d967c8b65beffa9a452c1ab513bfec67835b70df34bf086e5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:59:29Z), 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/QZZ7S2405609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400df94ba4fd176369d1a4c52ef8432470d2e7f57bb4c97f55d76b6ceb92aa30. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:27:19Z), 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/QZZ7S2405610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc1e80874792aa4364edad2c03743e8f3e03110ca7e9dbd14b8010513b8bf47. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:08Z), 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/QZZ7S2405611.