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 0xdb05a15fd2f7ebe3bd9c86416a530b6567340294db4a88ec67766be187f50a77. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c52ea36e-17f7-4b70-b3eb-85a875a915d7.json and https://artists.proofprofile.net/proofs/artist/c52ea36e-17f7-4b70-b3eb-85a875a915d7.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 0x5e3d2ff87cb8d78a9a099becf26fc1f5541dd2aa7d9a1bfa4d97cc3e6bf2acc1. 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/DEH820800413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c70d6c4671f16d7be23f7016d44d8a19485090388a49c6770c5d7546b78940. 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/DEPI81705951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d6292d06f35b9892510e63d7ae4507eccef9c7646bce4fe0fbc286ebb08ad6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEPI81705952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a7555ccee1494464350e50f9b92c0e00c9b8a833a72fa053d8d708fb1f077c. 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/DEPI81705953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7924c2128af70b5efd034d1f65e123c39a59a5c59c201a18bb2ab7e2ffee5859. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEPI81705954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c33a1f573a7542fd59b5a63fecea6a35878db3822a1dd0d3558b378d3a8dae. 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/DEPI81705955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d897d882818169d4ca45c03a0542eb90a019266efe7d58023a10533618afcf. 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/DEPI81705956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116d7591efb89d28a4e4a016dec4d60c6bba39ef69ef3fed39def73eb425a7e9. 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/DEPI81705957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b019754034190dcc6372d0d161e91c02b9a27abbfdbaa5d239b0ec58984b927. 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/DEPI81705958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ade5076f331e72239894a0b36546052cc0e270e81de901daf30c87a32613548. 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/DEPI81705959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa265720a3270a9f23932563855898013948d31c2c12d4851511c81d182167f36. 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/DEPI81705960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec26aa544a28090410076b04cdf7b778d158bdb506cba6659865abcfa5c57945. 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/DEXI12100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e6efd2351729ea78208b40964cd3bde972569d796c838ae9be235932efeecb. 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/DEXI12100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c26538aee62acd70408d2f502cb0348dce5c5ce3088390e07d3ba1a769b453. 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/DEXI12100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669a29252915442121b5b63bc7cc9f37d94cfa647d284bdb39b7d038f02f6411. 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/DEXI12100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3e6dd777f15484bf7c0d96e0e65424383d1dcad9081371dd4f20cc728edfee. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/DEXI12000023.
Greatest Classical Music Moments in Movies, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2cf8cae74b629828f3a6c1c09b275d2121b5f8ec38fa230519554b25c76447. 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/DEN171900012.
Alfven: Symphony No. 4, Op. 39 / Festival Overture, Op. 52
Symphony No. 4 in C Minor, Op. 39 "Från havsbandet": III. Lento - Maestoso - Molto appassionato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73008f8ffe5a67e8d11b957526a7297c8eccc3435483a59ee06714f466bd951d. 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/HKI190322203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c70d6c4671f16d7be23f7016d44d8a19485090388a49c6770c5d7546b78940. 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/DEPI81705951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d6292d06f35b9892510e63d7ae4507eccef9c7646bce4fe0fbc286ebb08ad6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEPI81705952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a7555ccee1494464350e50f9b92c0e00c9b8a833a72fa053d8d708fb1f077c. 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/DEPI81705953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c33a1f573a7542fd59b5a63fecea6a35878db3822a1dd0d3558b378d3a8dae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEPI81705955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d897d882818169d4ca45c03a0542eb90a019266efe7d58023a10533618afcf. 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/DEPI81705956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116d7591efb89d28a4e4a016dec4d60c6bba39ef69ef3fed39def73eb425a7e9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEPI81705957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b019754034190dcc6372d0d161e91c02b9a27abbfdbaa5d239b0ec58984b927. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEPI81705958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ade5076f331e72239894a0b36546052cc0e270e81de901daf30c87a32613548. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEPI81705959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa265720a3270a9f23932563855898013948d31c2c12d4851511c81d182167f36. 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/DEPI81705960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1c1c1940cb430c0b52fd70e3df960b3537b768272c9114c36f42ddf7a9f13d. 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/DEPI81705961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec26aa544a28090410076b04cdf7b778d158bdb506cba6659865abcfa5c57945. 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/DEXI12100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e6efd2351729ea78208b40964cd3bde972569d796c838ae9be235932efeecb. 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/DEXI12100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c26538aee62acd70408d2f502cb0348dce5c5ce3088390e07d3ba1a769b453. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEXI12100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae653d0bcc744f06b27f3a92716c6ff21554d05cddfc3e085477848f1ebaf1. 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/DEXI12200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2be66c95a243e38c0a07c2f499ce419a27d8beba249805697e834b334b3c1eb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEXI12200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a5c5ac1bf71b4b25e5e60582f31cabd67eb8f23fd6bcddf185dc7f3bdead49. 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/DEXI12200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3e6dd777f15484bf7c0d96e0e65424383d1dcad9081371dd4f20cc728edfee. 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/DEXI12000023.