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 0x62c2ac8f9478b3f685d36c6812594622b37b8d0fedcd5a46cca5979134b68bd4. 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/cd50c290-9b03-4302-9830-aa952a0d84f5.json and https://artists.proofprofile.net/proofs/artist/cd50c290-9b03-4302-9830-aa952a0d84f5.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 0x31395d10fb0a104844ef9d61ec0672bfcefe2cc2d856f7bdabd1f0b2803e05ec. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/NL1Y62400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ae989cfd3837ea5f561ebb9fe8c3fa556b4b3fbb51177f5ec344196af521b0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NL1Y62400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f55613d7ae18c8eec2828b19785c224a8d1b9462179fa0a3ad0e98a3722ffc. 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/NL1Y62400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92787249c4f8f48c7d4cb0d9890d716c4209c4e045772e87087157c5b0a1f87. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:52Z), 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/NL1Y62400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bcdc99077f063bb841f4e5c57c514f538a65f95ff6176a59b5e9ce2e0339e4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NL1Y62400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bf40e7161183ea4e22abde709d0941415a409ba7c502f7a4a73af6702ee599. 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/NL1Y62400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7b9b3f8276acdd786f2a104f7efc43100b3e9f66200319c6fb0f9004b4f83a. 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/NL1Y62400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d856ea3ad3f66a78e62f7ed7459a6d533f9328b39182cf05807b18d33880b5. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/NL1Y62400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571c3376ed257fd49e8585e4e884f04cdf99d233c73ba244cbd692e836e138c7. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/NL1Y62400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1561a0b2eaa22719550fc2fb8026018197cb61ab7e83383ae3a55011578d0d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NL1Y62400891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bd81f21c4f04cbcf6c46849de8090dcc9db41ff4fc37c082977facbc7031a5. 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/NL1Y62400892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750d35d3c432a2d294d92ce44486e6ad942cc932c545c9ea273c57a9b04f712a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/NL1Y62400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35937da5a5bfb0223fc08297e67b8cd2dd8f9743a09dfd400f0fa14397d1e4f3. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/NL1Y62400895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5554faffa074343da5e79b2fe1c345b44ac3a22426b0a4a47f1b6a52453a8dc. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NL1Y62400896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f69c8351e0ce5e0158c71790390344fb5d491857f32a636b36ed2ee0b4820e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NL1Y62400984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb9ae1c905a559f3aee8f6f44161f19ca25b85575c2da502a24f295f6643ce4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NL1Y62400985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e37d1a04dbefc85e4da43843247f4ff2ae6043e6b4efab61329ddd4a49597b0. 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/NL1Y62400987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b470d8c77a3d0741ab39513459a463bed17d5eb52152393ad42dd1f5ffec6a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NL1Y62400988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef06a17ec8c7fca53179d02f1113c8067c18cf0ca60eb687e661f7c83f1eb9ba. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NL1Y62400989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f749da5a6c8f12b8afd629e402a88e63fb6e70cb9bbfd617f95f80ed57618b5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/NL1Y62401713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb331d4409a9805586cb6dc8397963fd42035ac06cfbd286f0c7cae6e565f3d8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:45Z), 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/NL1Y62401715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0128f0c76ac5eacc47e8f4ee4b18d1efed00c4722567b04c82dd7e973643360e. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/NL1Y62401718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f686e7fcd287e34dfcca21010329cc239dca57196699f32d198525945cafbe3. 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/NL1Y62401701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49727b0f8c2763d76ee0b9d6482c297cb3ec2c5d660c9dda394ba13f54a588fa. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/NL1Y62401705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7d04728f4a7acbbb8a0364facd4b1c30d6b57e8d07bdc4226f11f47553d6bb. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:23:36Z), 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/NL1Y62401706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b2a6639663cb4fb8eb83d1d32aa36c0c4bbd255a5d6aa72e68e77241c65f22. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:09:52Z), 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/NL1Y62401707.