Terra Celta ("Celtic Land") is a Brazilian Celtic comedy rock band formed in 2005, and based in Londrina, Paraná. They are noted for making Celtic rock in Portuguese language (initially English), with
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 0xaab4a4f0a66f7e267fce784c03a91215541a0f6fb8a7a49a62d8102fdecec02d. 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/5391992e-f129-4a77-90de-caeacf54f573.json and https://artists.proofprofile.net/proofs/artist/5391992e-f129-4a77-90de-caeacf54f573.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 0x1fb460f5eb7700ba6f600c5571a38e64841957bc5f895fb2c033e45570e0d700. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/BR60T1100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905f22560a16d478bcd8290a664e87261d859cecadda41d9145be655723f4f77. 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/BR60T1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dd349a41f345ac0b7bac403d0e9e75300ccaca391815528cc9c9b118ad7fc9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BR60T1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa050904b006e71ca337e17c446d29967800c17173d36819a136637f08f51abbb. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BR60T1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd240e440569796a7606d3b0441d765eacb8cad7ac409e8e1ef3bcc3bd90181fa. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BR6OT2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27236cc7153b7f8054c9374ab18c51afc77204ec23fd30319ac5759b4cd0aab. 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/BR6OT2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59518ff104968e4786b5586ba6bafc23d6798f734d7c82a8eafdc44c7cbad481. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/BR6OT2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8952540f2891e523cb7a5e3c4aae1b0434dbaf73c46811141f46073d279e7f40. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BR6OT2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd5e155c31ebb29c8c4dee17d3934fc55d42fddb6b3e456eefadc37513fcc6a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BR6OT2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b59b14255556742a4364d20f2b9f56ff46ccd7bfa78734dce9bab41f6613f1e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BR6OT2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4d2a9a37e9be8a2c022320874c4841491b8551c827f14340945fc037d54c18. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXNT62100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fea778c5ca849fcde7acee9c5b2ee34504e9785dc908e2fdc0197963aeafc4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BXNT62220451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913ef7d28043f5095ac99dbce830a07b589c410f9bf1bd9ee32da233e94e1961. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BXNT62208268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdfaf2f6bc9b6a9dde4f70d48a89d20f669cb15372cafaa70dc6cbb686b0509. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BXNT62209492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675a2c16b29adc558bf51ab3e5a58fd7e02e839b31adc3e00bc26be91ad20338. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BXNT62402152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f251b4f3ab02d11391431da607f3de81cf688e3abf130751cea997db36a83f. 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/BRGRL2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4641706cbae9e86056e7a09851d686b1fd9271ba4e8751dd8f6afffd83c8dbc. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZNJW2028406.
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