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 0x2a1fff5e23272f57a5d5c6cb994d69f730ffbdeb77665b1499927062644d96f7. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39824461-5746-4784-a519-8daade1eff0c.json and https://artists.proofprofile.net/proofs/artist/39824461-5746-4784-a519-8daade1eff0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vintage Vocal Jazz / Swing No. 177 - EP: Hold My Hand
Vintage Dance Orchestras Nº48 - EPs Collectors "Dancing With The Orchestra"
Vintage Dance Orchestras Nº 116 - EPs Collecto "Exitos De America"
Vintage Dance Orchestras Nº 81 - EPs Collectors, "Ah!, Happy 30's"
Vintage Dance Orchestras No. 173 - EP: C'est Magnifique, Cha Cha, Cha
Vintage Dance Orchestras No. 171 - EP: Tea For Two, Cha Cha Cha
Vintage Dance Orchestras No. 176 - EP: What A Difference A Day Made
Vintage Dance Orchestras No. 177 - EP: Unchained Melody
Vintage Dance Orchestras No. 178 - EP: New Sound Of Cole Porter
Vintage Dance Orchestras No. 212 - EP: That Old Black Magic
Vintage Dance Orchestras No. 303 - EP: Pertinent Percussion Cha Cha's
Vintage Dance Orchestras No. 304 - EP: Provocative Cha Cha Cha
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 0xb278bda0c663d545203770fcaddbddc5cdcdae9ef34eeeaba038381157761ed9. 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/USA371379130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eee2089f08464f2c32c20bb63ee8a8cc5563dcc96ef5406d91273a3cb6c4d4. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USA371379131.
Vintage Dance Orchestras No. 305 - EP: Spectacular Sound
Enoch Light At the Carnegie Hall (Stereo Version)
Enoch Light and His Orchestra at Carnegie Hall Play Irving Berlin
The Million Dollar Sound Of The World's Most Precious Violins
Big Band Bossa Nova: The New Beat from Brazil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80a2e8274e9a1cf1278943e863a96bbc6a608ab49856b81ad465462cc5052d9. 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/USA561000178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3318bc36839dab7bcd1f5912fbc4c0498bf69b93be48e7227f3e9453df5459e9. 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/USUM71806045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c53d76dd7460f2297c6519cc8d0f4d1cbc0660b2b396e6b2e1cf5cb9948656. 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/USUM71806053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a81655baf3ebba9f31a795bfeda51e2b388231fdd3d6994eee918b00b32fc8b. 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/USUM71806049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953394d1d5e638479690d86a2e6ad0aa34c305273467c5793d4e29e18f62cd4f. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USUM71806050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e812fbfda5e97e53837c5476978bb1bc3a74eecf8795b5f96c0b7a84e8c3f0. 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/USUM71806051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdb90b70ed6d618d875659d06a0bbc3a5096039412b95109eff83ed07ab2763. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USUM71806052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f645d9046063af9a26ff7b01af552b1b6a11356ac0d5fca14ef7c804162cddb. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USUM71806048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7bb43dc04614e01810a6529bedb59cff75cc8cedbb5419b4b1d7dbbc8c72ce. 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/USUM71806054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b082364257f8ee831db12d7b244472b8447fd1be60c2a10ae325c6b85ea510. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USUM71806055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177fea89745094cc8fd560814d6fb28843016bd34dba504455de57b42fdc57b1. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USUM71806056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cac963c8a60efe865de57c77ff95943cc553ba510cec6f03210b386fbac44a8. 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/USUM71806057.
When You Want 'Em You Can't Get 'Em, When You've Got 'Em, You Don't Want 'Em
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3af332e96610950c08b5bb37d77ab394a1f120f468c1c07f9ccd79a712845c6. 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/USUM71806059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e804ae9702c690288924e7c77693fd51cf11b1b35318619db57ba483fd51555. 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/USUM71806060.