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 0xab37ee22be11e226ec413795fe92020c30e594d454619f92d78882a9c8ea1987. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7561081-a4bd-49d5-8755-8638c37affcc.json and https://artists.proofprofile.net/proofs/artist/b7561081-a4bd-49d5-8755-8638c37affcc.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 0x076d40dccb8d4d2cc04141f90f58ae855f80db6ac47ddff68593e5062874331a. 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/QZW9M2368362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c201d87a0afd27023595152bc9580aaeb2868844267b0439aec25283a7485eb. 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/QZW9M2368375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfcae1b623f893e753af7582e6e427f7041fb6b440bfe40a8771575cd501f68. 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/QZW9K2392387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb034be00457b714e3176cee5f1973c8397f954eecb1a3b5badf1168c0f45d82c. 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/QZNJX2473189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd446877648ced003f124e01f852b40481aaede04acf2fdc20b7f38b1580bad4. 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/QZZ7L2482249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8ac213b6ddb8e0909f92fe0373cb65e7e63216c521736eb20ca2a01955f2f5. 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/QZZ7L2482250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2f4d3034f2b2a338fe49efeafcaa51eeab7388d92a1acc8f4a62d6b3c70a25. 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/QZZ7L2482251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0671ec39ece65d84b6f11f1ba606bc1c4d525b103d76a8589b3189efb797f575. 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/QZZ7L2482252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0796b82bf181a8222b079cc35137b39056371a486ad9f3148d59f45269bfe8. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZZ7L2482245.
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 0x99159aa48156cfb3181a3c83ac6bcb0f70716572df0f030e55ef1e2183d7675b. 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/QZNJX2353859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b8226d24820d81f99a4273e44381bf35d4dde69ea13487360d12cf9b6d0e8f. 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/QZNJX2353860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cf0b84d49f8fd685c7725c6e759612cb8a1238968ef73674bada8d054a649c. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZNJX2353861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89acf4e3e83f6eed215b3441acd3ce21e9c593a51b42d6a24a9c871bf09e8c88. 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/QZNJX2353864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fc56fe3870c1c62cbeb828a57183a56d4a762a0319c54b55709c6788c75709. 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/QZNJX2353865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4ebce0f9203f50aae4440ddeaff445f401a4be416397c11af60200b9632f92. 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/QZNJX2353867.
Gravei umas Mixtape Que Hoje Vale Ouro!.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3cdd88b7d84802eec04c583f39d02c2370a0132e09fbfaa02ec86e68f2db5c. 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/QZNJX2353869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5bc3164795ce38a0d2cd4f2b9e1d39b58560a27ffc169b7580976fc6b78f8c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZNJX2353873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe243061e131c321b80060c67870206899870ce1b6170541afad7a36b00c96d09. 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/QZNJX2353874.
Para de Fala Besteira Com os Remédio da Sua Vó.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f30d74ca80eba67e2cb8d8226f0c26a37ad79eb483f7de8e0ce6f6695fe08a6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNJX2353872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a219a86a0ef80b0b5be8faee68dbeb61b1f11a2db9f4f70aaed1b485b01e42. 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/QZW9K2445407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaf66baf2784014406b1a68dc4a0d863ade1695f07ba69a8eae9009902412d3. 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/QZW9K2445424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba39077616b01091d5d06a414ddf4a54fe49d3dffe7ee4d9a85bcc786a108ce. 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/QZW9K2445425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4c647d72e17f1b06f2b10dd056a4ac987c810d822f14472006d3b1686864c3. 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/QZW9K2445422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cc6d10256383dc85d6848c221787c00983df1b7f398f17b9088972ea0af9cf. 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/QZW9K2445423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d3c26086412972f686728c026760667330fe733e0cc33f9e538d4c7b6ebbcf. 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/QZGLM2528687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa914a1c09cbf62c92751ca1df36790854b12b52188912dacd6410e6140190d46. 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/QZGLM2528689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ee3155ae1aff7f46f33f7e838ce512fd9e2f8d3077db8eedbbae0f7cac51da. 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/QZGLM2528690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd898b1cbde6ab24d5385b5448a33c0eed7f35b347c5f13600e1bea3445eac. 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/QZGLM2551409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee40b04f5c03666458ddc9f340e74823525594016649018950036c84a51ee26. 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/US7VG2565114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e60ca346b9af00fda577f45b0f4326ad3ff956769c04a0ab394d1a98ecbce7. 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/US7VG2565121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165785ccbf38d257fd0268721f6d5aae2f86643399b2ec798b721f91491074fe. 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/QZRP42483368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2888ae6c1ba316709444f5688ecbc6b4cc9875b71c7cb572ef47d76a0a9f26. 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/QZTVM2421655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750066f00378f45954a361a2eb86ae7c88f0e486f5fb1ee5ef203ddf09ff25a8. 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/US7VG2591081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2879146e8336695eb967887dfbfadf2cb1660527497745af2db8ceb4e7f93960. 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/US7VG2591078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda88edb42cf1f33526f6d0badff911384f523d08b468581e59d5ecc441f586a4. 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/US7VG2591077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6547990bf1decec0d8eda5206f47100158ffddfa7b3b5b2b0dbd35a9408f7a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US7VG2591079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a73ecadaa01ec2c19848120ee5d26806bea01a8940c011fc86731144956f5f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/US7VG2591074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e50655cb163012a8bc83a609ea82de91e96ca17f419c442275d56aac5e54b3. 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/US7VG2582725.
Set do Piazza - “Ela Só Quer o Tubarão”.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628066116facf54cfffe6cb4df8612608de8b2ad88a1aca6b0b4345f5ba2bbb6. 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/QZNJZ2327221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cba744bf2829f47969bec3ad7be2ffb95c724555a9497a30f287573a95c8b68. 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/QZMZ92480006.