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 0xba371f9df484f56dbb3811947b415b2ba059564e22b8b623b008cf063744f3df. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/687fcbc6-7ede-41c0-a309-259ccaeeea56.json and https://artists.proofprofile.net/proofs/artist/687fcbc6-7ede-41c0-a309-259ccaeeea56.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stella Natalis: IV. Only Heavenly Music (In Memoriam Christine Brown)
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 0xc7a7b858d649b22e8d4a59c8fe1825e5b978dbfbd33028fc62c5a72911de6e77. 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/GBAYC0902275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218412380fd39513864decefdddeb95d3b46d015a161c2bff0b222fc89249fbd. 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/GBAYC0902280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c70a90751e1497701f234575fe3d1728f13e6788364eafc8f54b44704b17304. 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/GBAYC0902273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c70a90751e1497701f234575fe3d1728f13e6788364eafc8f54b44704b17304. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBAYC0902273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a7b858d649b22e8d4a59c8fe1825e5b978dbfbd33028fc62c5a72911de6e77. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBAYC0902275.
Stella Natalis: VI. Sleep, Child Of Winter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c43689b9477d2ce231556f7de6d24cddad6bb8f4877194f630fa4a4d390a1cd. 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/GBAYC0902277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218412380fd39513864decefdddeb95d3b46d015a161c2bff0b222fc89249fbd. 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/GBAYC0902280.
Joy To The World: I. In Dulci Jubilo (arr. Jenkins)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04639e698155c1992cf99df346151ce5d1db5a9f0bd1a063844914499edf7bba. 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/GBAYC0902285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55dd6155a8d88abc63ab72a522ed16f9993188892218f6466ff36682e00110c. 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/GBAYC0902287.
Joy To The World: V. Pat-a-Pan (arr. Jenkins)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42929b3a9871c2e1ccaa09703a08c75f08c73619b53d59fc18a14a8e0ef97a7. 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/GBAYC0902289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea4cd7908925d0854bd98468b13d9bec1ff09ce70bfefb2ae86616b7f2485f4. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/GBAYC0902272.
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 0x7c70bbce139010cb7f189ea01f6ddf2e5bf2a4d8b690eb1088c630914ecd34e2. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBAYC0902274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0010f798a3bd07ed167b40d1efaa87f2761db81dd014d60770425a6710e42365. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBAYC0902276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8d8678a53e5a60c1dd3cf306560a88bb888046fa0be01f5d03600f904eae23. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/GBAYC0902278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d584ba6a70aa1ca79595939f49c1d7a3fafb1186eaf2ebf4f99f387566e437. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBAYC0902279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37257ed53b810746ccc5e43939d328a405257572120eb75e2a4c15c3033a1623. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBAYC0902281.
Stella Natalis: XI. Sing With Joy At Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165f00e6ff00952bc51e5aca6c6edac849af95608e367cc37c3eb75f48fccd35. 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/GBAYC0902282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e6db38730d2bac2488d932ef852922db3e8a8578b03534b3ef88e204367b6e. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/GBAYC0902283.