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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0affe3146b5fbae22b34944cff9c6d348ac24f57a092c2492c36162b9d1dc17. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d939b2a8-a671-4063-a52c-389a6206b9ab.json and https://artists.proofprofile.net/proofs/artist/d939b2a8-a671-4063-a52c-389a6206b9ab.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730b24c27dbde9011eb6cf829bf2dd887fa9e028119725db624574b140af2b70. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEVLW0400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdd202c9d5c29fd6c82348095051a57e5f469b56996ca39eb8a9d12cf73e39f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/SEVLW0400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cedb1b3841ba7fe194dfdbd918a3fcc62d97cb5cd74073984dcac30c668f5bc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEVLW0400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9951c2f427bfbcd012fd402bf65da18784a446b595fab3cd5771669c84cdbfcf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEYPC0900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a7e89aa71724e4c3b7d92da237269e60123a9c95ed14164cce24a54bdb99c5. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/SEYPC0900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4548a698e4fd383eaa1a6a707092fcce819b90f17bc70aa20ae6c152b0d4b83. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEYPC0900303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0dbceeea9c6ed707ac04e7be026181eed2d60389fca292b3b77628c8c61f82. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEYPC0900304.
Gud, Du är alltid nära mig / Se, Jag gör allting nytt (Spontan sång)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7de47d6b5b99dfabcfbce32b0c47b9b6ecb00c2ac5192ef323900e2eb715a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEYPC0900305.
My Eyes Have Seen the King / For of You and Through You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500d1ad8789bf6755d188a39026104fc0f15cb5b599fbf45485c2e08bf9addaa. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEYPC0900306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb0eca460f2bd15b7156b905ffd46012ce440f6fe910df5c3e802fb9eebe534. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEYPC0900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dd9bad459274847ce79dba9f5cf1fdb4c17a939478bab4bc09dcf8738eae59. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYPC0900308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570e68258a2afeac530a79253f622e9095fa8bca0ce04f8517ceacfaba594a74. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/SEYPC0900309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd801cf2c6ae55d228f8491d5cf7c9a59f3dbeee2d2616c41af3972feeddcd36. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEYPC0900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d182d6f5245cb2fe4b23e78a27ebcee633bc3b7bf72e9d374d7d8250e7a27af. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SEYPC0900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc804555130c5b5863fad7cc39fca74156794f66c71483d2c4f628853a781fd5. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/SEYPC0900312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9503ebe7d327e291b5403c7702c947aedffd1f2423800f0acdf6dcafb62dea4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYPC0900313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffa7e97d38fe7dd28f2012fa684ca0111c8adfb6996c7e3b77a4a1666c7c44b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEYPC0900314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff235beb586124b990f8778fc939e80cb32d426be2d2fa718c6f23525c26f15. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USB8U1038257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb90871c3f7a90b8ec20a7e4e30435de8b5cc9121ea78dcc981e9eedc65b4b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USB8U1038265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfdbd1b2e3dc11d9829c664fbea99d07143ec1f873835b8b61b90a6e86f0b6e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/SEVLW2003002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf6d05e8ccf92ebd53f3cc8bb30a4603291f38cfdea0e5330ee4eef5c59de79. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEXTZ0700107.