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 0xa5e430dfbe55d860119bca95063e071130e1eafa35429517324c7fda19b6366b. 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/7816e952-a42c-47d4-bedf-cda86eac0806.json and https://artists.proofprofile.net/proofs/artist/7816e952-a42c-47d4-bedf-cda86eac0806.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 0x25dda27e3ce3741cda9e5f3d6fa3cbc4fb2b660267315ebd938126d9e6673381. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEVUG1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07dcd33476c9f9df2a9b2a54d737219e04490bfc88bcdc2ddab4861fc111de4. 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/SE2XB1100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0b9f32ae86379b015018e8e3ea4b18c95a80e5ec26be1d6ead83669403aff0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/SE2XB1100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c472fd0f2b45b4741b947430e8e812e7433d4318376b35fc933344b3d34502e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE2XB1100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9ed24aefe294b1e6765955a71f24ebf555c8065f78cb151f26d4ce04035495. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:26Z), 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/SE2XB1300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c40e69fe228fd1293ca15f53263eebd0e0e3431c760a82b6b01aa81f30b5f64. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/SE2XB1300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15064389f9dce5c74eda536453a159002f0371807401e1580c4a075acb636bd6. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/SE2XB1300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5358d3eee4a6b1e51d50adbf40d29dedb2a91d50ab0c03d71a15fb048c3f4cb. 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/SE2XB1300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bffde280884d5cb3a18f5996ac3c0d652bce073109cb3a74a0930f05388ade. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:56Z), 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/SE2XB1300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0c6e5abac27aa119de95a13dbc0a4ec7271929ce07bde72ba226d22b7fecb5. 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/SE2XB1300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5f8302baef45d7db2b6498fbafce7166dd3b331f1bc7dd14858f4067dfa6dd. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:20:15Z), 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/SE2XB1300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f6f7f6b136e0ab86ddf5a83cc6effe888f4ba7fd5bfef6c7a113560eda4271. 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/SEYOK1734804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44ae5272a6c58458b1c0c9e6e08c1a92d4dee3142c75ae9785e354b173e9032. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:53Z), 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/SEVUE2301801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea327a4931c3a7a120c00b34a626dfb415f85a32c7f14e023850b38cba17b83. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/SEVUE2301802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68e6f355c23e8af7a6b5e1fe75dfcd3fae3cd88db3b08e104a05d333d52bfd6. 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/SEVUE2202002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1e973f26b1385f079eb7a47b4962cfde422fdf05636da476c74e3c840c3cff. 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/SEVUE2301805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e9bbf73000d15a548ae178b1a9a7a12b687a4ba3d37f1dcb9a1b54e0caa1e2. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:41Z), 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/SEVUE2301806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ccefe8987548bcd92869f96249232d19ecb7f9b26074d97514c43b825e37c. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/SEVUE2300801.
Det finns en specialbutik för rejvare som vi (Sida A)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d025fbc936a0b5d09c971358b8da25cf48367bb3a6b431af56447a342bb9645. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SEVUE2401401.
Det finns en specialbutik för rejvare som vi (Sida B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914e9e6ffdd3cbe9ef22c63b5c9c62455fa3c4944ad012576fff617362e5c493. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SEVUE2500902.