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 0x610618439ebe61d58dd6767434db856d5c655b79b04c0279be84f47dd93cab06. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/783e814a-f737-42c4-ab72-84c4fee5b522.json and https://artists.proofprofile.net/proofs/artist/783e814a-f737-42c4-ab72-84c4fee5b522.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 0x4d64bff1d1298ceae7b7a78fd8df3973d43d120db5cbd9984c0ffef74be0cc2c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE2FY2001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebffbac801bf62b1bbee6ba1b01c0f1e7418f2d31e6ce92cb8f13a9a888a7cb. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SE2FY2001403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c436dcaa58d8535afa6c797062c2ae6000547050c58b360df47f1dc101425a. 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/SE2FY2001404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71428cc75c475abdb0f0bfa968c2e961025284f6a9987447f8caffa110c7625b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE2FY2000901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a9bb1837095eb484b1c6390625b0c6859b225de047198f1ab7fa91d29c099a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEWAY1800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711ffbe5fe9dd2ec7bd35761abfa85774828152ecc5d73fc8388af5c37d82afa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SEWAY1800306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05315206f9be57211503aad75155275b799ab0f43e690e2c5744c31907668e73. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEWAY1701006.
Poem, Ballader Och Lite Blues - Återbesöket
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7345e9c2dd57c69d375f5e3707411b0c9fe44f310bb493ff0f4c759db02acb0. 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/SEACA0701201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d573c6eaf6b504927b587f4a042d3ee7a3afcbd8ccafbf00df23bcf22ea8f9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEACA0701202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b1de686b42379044a7e3ae0dff1a4ee0b9d9a69ff09b441dcd5fb9e5369252. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEACA0701205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e8bcb397dacf623d21ad60cf8ccd562004a6dd019eccef1149e8f5d5726da. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEACA0701211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d550a679435b9a0eb52995bf04044d5ef742a723b167c5b5d804a1afed894d2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEACA0701213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4829e6a7cc0cfe538bdca7b7f20bba92d1f3efe0ce6885acaa31c57740f2b7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEACA0701231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9236ce3657a5dbf134c0c4247165881cb9ba8fc6e4fb7f9cc845085128fc2d7. 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/SEWAY2100907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb9330217b746bfe7128c6898e0a6677761d7e69f3b18a4b0fee98e79731988. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEYID1500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61303941e8259daf1076290ac1190ad8002e85fe49766d57f705d9a5df74bbb6. 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/SEYID1500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4358f358e0a4127cd2d3fc5e0e3e811977f5762c719440ed268cc303afdbe7fa. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/SEYID1500106.
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 0x7431145f4ad7a0a379e7ae2225a52f0cdd46b254d335aa6c416b194e845a434f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEWYF1000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bcbe9fd5f74830ae0e2e45fd4046517050252f5ba108c8e37ab15068846635. 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/SEWYF1000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d06d3d97dbc1d92221b15703e7e284acf499f80bae3f4e4d904ed4a534b56e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SEWYF1000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe236c16fe60c9558160d0101336f81b241792bec212aee4f206f28e8c6802f94. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEWAY2300306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad85635c145e259a8a16f17be7b332ad5ba4a5c2f7ad201ebdc213db2364951. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA1101004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b9700e712c9a2774918765eaf3e3fa37fc5520ef4b3e580cbc0028c1d20957. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA1401207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27848ee18ac6338f604581708575a4de1272db28a89342271e448b996ec3c93a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA9020010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbe9b1611507fbe04762b864e3ee8f56bbaf267c160edc952718886d8ad9252. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQA1000427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa5554bfe5bfd06b79d126a6ecda509934b374bbfc2a3bb69210e2a88903d1e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA9201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fc3defa94a6b760767f3196f6b197632e63c4c762af3efd490a01feb7028fe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA9914010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47385de0e2bfeb25650393b0b8886effffddc763174a266fb27f48959f0d4698. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA0503070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9dcfd2cf909d1434d61b6665afb92b77650688888849341dbf9528f31a8a3e. 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/SEAGA0803020.