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 0x880c5770bf6497a94c9c93a792cdd891a6f544c534a48ce8692d04ed785a5f97. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb820492-2823-4ac8-933c-aa8ca6e64c9a.json and https://artists.proofprofile.net/proofs/artist/eb820492-2823-4ac8-933c-aa8ca6e64c9a.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 0x9748e6936c2e049bae29dac0f79e7749687c8f9a785177a2086330ac3a94a36e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US7VG1660357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd017d792b735324dedbd9fd6317df1bde331e04f3ea1793c64f25eadacc6f731. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:16:39Z), 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/US7VG1660358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6d6eb234ace219c7a1764de53d5b04a998ebee664132953dc7f903396cdb47. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US7VG1660360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f212028987f7a9e2259590cee9e8e6439431a1e7d778dbbffb7822d7f93421. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/US7VG1660361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa4c2f67b792db4301b30c819bb404c4adb89b142687ad046f30a2f4a3d3871. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US7VG1660362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dc2bdb0bad48bf8c8ce077653e906fda6c6e9f2963f9f1a35daf5e76cdde7e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:02:36Z), 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/US7VG1660363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01c000f6606410e85f8f460f634495ff6fc09766485d2b9f2f900d6bbbac7c2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZGLM1966377.
I Hate Myself, She Hates the World, We Wanna Die
Monolith (Acoustic) - Container Apresenta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd296c18a907e7f1a53f64c2ce2a95ca1c1f94ebe46cab17ea9f60c5a285307d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BCIRZ2100002.
TxPx.Mixtape.012 #1: Third World Democracy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5709ab3ff9b53ccbff685de23e8321e0b8c66e86dd545ca06b1bea18cfe48ea. 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/BCIRZ2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec69c8a1cc53a08e4a5c37c00332e301ee64d84fb8e0e41126eaa51ce4bb040c. 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/BCIRZ2300012.
TxPx.Mixtape.012 #2: Slowly (Diz Que Me Ama)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab8bfa15b51f5dc92387721840ab2c5367463fbe620e85596c31954adc8022. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BCIRZ2400003.
TxPx.Mixtape.012: Road to CARIOCA (vol. 1, 2 & 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cb20aa48e1c8f321f9c7b1a8910557d6d9ea5f00ca77a0940ecb56abd1c550. 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/BCIRZ2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ab8bfa15b51f5dc92387721840ab2c5367463fbe620e85596c31954adc8022. 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/BCIRZ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5709ab3ff9b53ccbff685de23e8321e0b8c66e86dd545ca06b1bea18cfe48ea. 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/BCIRZ2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec69c8a1cc53a08e4a5c37c00332e301ee64d84fb8e0e41126eaa51ce4bb040c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCIRZ2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463f48cad2f138965f3ddbb9d79003a3b02428e7ab117a8e7960530db54fb711. 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/BCIRZ2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622a0667e252a69e5a6434fd540854b17246b91458ee578879a923fa4ff84325. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:18:12Z), 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/BCIRZ2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bbfaefc8c95f6fbec800909dc82153023d429d319c137a4f8eaedeb67c18c3. 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/QZGLM2403543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13bf02bb4860d34a9ff28788e8e7142be0d520663cc92f31378d63f1a039bba. 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/QZGLM2403545.
Eu Acho Que Preciso de um Pouco de Espaço
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426048f54ec2a7fea08899d88150dafd66dcdeab70f472c36b2b06c3b10c2c9b. 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/QZHZ31949761.