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 0x344d14c685708a0b38c8741717be87fe54cff77aaf5066445f473f23d3b262d6. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2fbd53d1-4d62-40d4-a4f1-4aa5772bb00a.json and https://artists.proofprofile.net/proofs/artist/2fbd53d1-4d62-40d4-a4f1-4aa5772bb00a.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 0xc7ae2544fd36f63f89b91baecde2b2e6f1e109d2507cf2bae71530298ba7fa2d. 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/QZPLR2255299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37783cbf9eb938d91264e090f5ca6bab8e1f552a740670b66e9eac01b3467f0f. 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/QZPLR2255300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0c03e861058a0dc2bd1ccb4f178bc040e82a84d954571c11599a42656af81a. 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/QZNWQ2297484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a3e11819951deb5a72a2c2fc74c4d487b93ce91f2c67a5eb0be077fc296a1a. 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/QZPLR2255301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dcf9d5cfed7dc600d4578f8841f1c18b5e804d6a20550a9e410ba55e5bb47e. 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/QZPLR2255302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74052924e5cf898c5f1bb12a4f11907c46d387f734a3202897517616b87c2a5d. 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/QZNWT2288239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454ad6224337fa47455d25336e6899b696167543ee4b4dc148515426cc61e314. 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/QZNWQ2275672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84b331f1afaaffdf2aedfc71386149e5da0d556f8235cf1f3e560f1a998214c. 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/GX5MY2169188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515c6c7ede04f7de3c3f6923c8fce63bdc3fc62cd3420b4686f274215138cfff. 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/GX5MY2169190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b8fbbcb3a5bbe56fe1c841b8af10a59e9763d7fe20a826280d164c4b472b27. 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/USLZJ2457551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa680b48be53c3228a05652dec0297ca5c44bdf952da92a2c84c90f6ed6e10d35. 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/QZTV32385200.
come play in the rain! (acoustic version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af2d6723f4f4e6e12cfbe5b32159acccd0317cd892bc1ab60f50b76aba91d67. 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/QZNWW2226884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb7f98da8af803153223ac1b1e0c034cd528db0c37fdd2bfdae4dd3e0e04eaf. 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/QZNWU2200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6725bdc32653a394d8f6c39052eab27dc89c368b761e503be95d006ce07340b. 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/GX4R52175284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5230513f5934643fa58830e07db340d4e597e511aa7a0731f5b2fe01fa59ca4. 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/GX4R52119917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f427f9fb31d3dbe1a2db0fd82ff7392680b4f7205c5f4f44e413e6a8f28b9e. 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/QZS642380517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8c0e99bdd2513a40f31fd41c9c9bca40ac666eac4d0ab8295c31635bf1a0af. 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/QZMHM2333285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2866466ca6068940a38cb419b837d66aff9f3c638a023bdd82131592beb6ce1. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZDA72249069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf244fe79bd78304e997dc850c2d350234aa25a84c12a93889b0150f39c384d6. 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/QZES52545859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0023608e0b425c12b692222fe7bddf748da13348fe1c1feba3633264b71c53. 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/QZHN52315459.