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 0x2384871fe1251b752c4e9775c383f7f346745528b1d145d183d78d5854bbb7cc. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c3e96a9-e26b-495b-b528-a2aac35a4cdc.json and https://artists.proofprofile.net/proofs/artist/7c3e96a9-e26b-495b-b528-a2aac35a4cdc.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 0x020b779220e282a1e60123331141ed643f3e92f2498d40ca92a3862155b893c2. 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/GBCKG0701842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f5a2dbde7e570e235ffc89615d9a9f15dec9a9bcea15265fcd802a0c811c48. 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/USA371182484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9684ca835dd03f7ce533822702b01e555da56670fa23aa6960a3f0c930ae99c5. 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/USA371182485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45ca65d130b0b512b70103d33dc8288cb1f5a8260ddbd7817087bea30280e68. 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/USA371182512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4f61dc963c6f146e5502a786817a5a285e1592190c6e2aa04e157746fd9cda. 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/PT2EO0500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52527d95826eba70fcd3f9f20a0d39794c8cfbb1a75d6028a5bf02c302161046. 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/PTCN19400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52527d95826eba70fcd3f9f20a0d39794c8cfbb1a75d6028a5bf02c302161046. 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/PTCN19400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4df679c682d151f73609fd7627661a5fca7db0c9c3f44b048da6e2c5ca32909. 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/PTCN19400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c98fe7b9dd5f63b640b2258a569d9d0e2be68938898fcaa15ece7259426eeef. 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/PTCN19400116.
A Canção de Portugal - O Fado (Fado`s Amor)
A Canção de Portugal - O Fado (Fado'S Sentimentos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2cd9a9ec2b086498fe80bfb22ab22571d3da9a2ef1813f94ee912583df3260. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/USHM21963364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014609c73dab53cafb37abf59c11e21f60c9e1e16d87e08946f008092835be7c. 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/PTQR12100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e2499cb4ba5ef187c887a7881d16a4988cfdc2591cc282ca6287e768ad9893. 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/PTQR11200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6ad9f71894323925e035452594a5a7f9c593b741ccf417469f172c7da0f13b. 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/PTQR11200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c48c0faf8559b8a9faee6a89a35afa123324590026702f8e5eacf198e04fec. 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/PTQR11200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5036285e23c27c1102fa1b97cd144bfb87cd6feb58741a1d50a25d1b26193ba9. 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/PTQR11200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf374016106467741d1356f0a14c03aaf74876582342589b84c02484598c8df8. 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/PTQR11200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35631eb5dcef61953ed5a774853c2d1d18cfe12d2c49b8ec60a8b13456ef0f5. 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/PTQR11200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5f1c55a752d01be8b4e48991458ff5d30fd84d2525154360233ffa4ced7271. 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/PTQR11200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580b58edf798220b6b82b22671803603a71013e6ed581ad45abbb5e7b2aaa537. 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/PTQR11200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf078cc89dd1c5da91cfa48eeab3984c64ce8a81b0a537c318ef91352165e0fe6. 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/USL4Q1894567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf95a0e1be2cef60337b9362e9d34724e4d323cfc5998505bd68e224ed4d97e. 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/USHM82251771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7deb49aeb24119914ca3200937e53957bb011a288fee85dec3b09a4b25aa48. 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/USHM82251774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3bf46626ca3b6aea34353dea4a328023165deae342c5d4cfc5421bef6da98c. 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/USHM82251778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc341507e356239fb75162c82bf168ff3603318a19493e0ef64e749ff3a0c73d. 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/USHM82251779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfb5bbd99fe78e6061a98b2d426ad1a308a0dfed7796bf4e69bcee99e038ccf. 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/USHM82251782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf868168805b6ee1a802d46340fce95bc5754fbae435f440858270fc7f83ddfb. 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/USL4R2324026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1739b16ff76e4e7122bdb78b5cee4b0c743580640f11a2a7f52c7d4e9ce3136. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR6V82478035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bbfa6735277dd6e376a27866fb1221478c24e23c366f36f187d9fa60a5c0b2. 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/PTQR11700071.