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 0x0700f5b245786616e1aa1988b56b12f06c906a479aeaed84c680e598e34e5482. 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/8ac1530b-1a5b-4103-9f1b-5a7cd5d268e4.json and https://artists.proofprofile.net/proofs/artist/8ac1530b-1a5b-4103-9f1b-5a7cd5d268e4.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 0x538d994cc17bdfd2a2533f978d65d873989ddeb4e97af959e34ef09847f1806a. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/BXK5J2000012.
Meu Pintinho / 1, 2, 3 Indiozinhos / Pai Francisco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0249537a88d1b18f089300e9bdf862a2306bd89bff62e3765d8052e7aaf54ed. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/BXK5J2000024.
Brilha, Brilha, Estrelinha / Alecrim / Se Essa Rua Fosse Minha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc30fd2f6a489fc3d7c9afe5710a8ddbb6e33c111d2d2d924c82eb2164f7e4cf. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/BXK5J2000026.
Motorista Olhe a Pista / Meu Lanchinho / Giramille Cadê Você
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a63af082a436f404b33c75dfbe8b50c162fd5c8a7c3f4d0f4de0c5836e704c. 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/BXK5J2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136c3dc9f991a3b52d4919111c52da0f187f3c5454d84fad95bb0b8003148749. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/BXK5J2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bdd1c3783f5f6711140e99d4dbe89f52234624511e6ee4b7e8e059cab764b7. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/BXK5J2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a7cff1702a92d52c1d9f84c9550ef0a533f323aca3e702fa868d710ef7e4a7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/BXK5J2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbcaa92f8295cf76c13acd50e9f0b75374ae087e7d55ddc17490ce5e920bef2. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:32:26Z), 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/QZGLS2153348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec9bc78d2fdd3344368ce4a3a8c06b370f7a3eed139aafcfff747ff156def7a. 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/BXK5J2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b70f5b46a34ba91360014c1a35f03ddf3e313bf87c87f373602a906df2f887f. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/BXK5J2000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0ea2bcb8c16e1b2e71fe5b43a03bdbf367224c11a75a8dad3570025f3c0987. 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/BXK5J2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711f3908f885cd1b3b18566529639ea866dba4fa3a27396f6dba630da6a8a24e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BXK5J2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671bf5bc0bdbccea30592efa5c1e38af65c38a3cb691c966ec5edcdb2e6a0694. 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/BXK5J2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aff312bbec6ba34ff28ceb72f9f6017f8807a59a0e77e638b574567c6f3b39f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BXK5J2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e82e3d39a0bd6f6d9e199f587d8f9ea344d65dced8374ba135b2acee65447ad. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/BXK5J2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5c1e39a7c34cffff8d348961e1584cc631bc4297cdc3df1c4f5f7693bbd40f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:44:21Z), 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/BXK5J2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f1a74dc594551e72401c775326602200f165a3fd7bf3d4e45763009b282ad7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXK5J2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482410e64fa7fbf4aa7b44ffe6144415486d82719eb76da2189f654d4222494d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BXK5J2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bdd1c3783f5f6711140e99d4dbe89f52234624511e6ee4b7e8e059cab764b7. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BXK5J2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbec4ac8d5c684a1e7b76b8d50147ef5caf2496c815189d5ada63f35383ac45. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:22Z), 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/BXK5J2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceac1c766d133106e410cea8aad00f8574398a58472d4ae0eebfa319c35b7532. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BXK5J2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8b8e115575f7d3f4d4203e04af939154b8433eb5f843222d178b44ace9a08c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:52Z), 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/BXK5J2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c71e34cda5d5147bd8d4edac1b41f2758ed7fbd92186e9673673d62ad83461. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:07:55Z), 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/QZHZ62119859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d1561e131b62f64ae9727cbecfe3a7a7654a52fdc4786436a7556681316a3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHZ62119860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac62cbeb0537e280329489b1d372490737db881c790e98d1251a4865f0c333d2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHZ62119861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12640f18fc444614b679878af8f539f50e779c00aaf5a7b123509fd10ac35f21. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:12:34Z), 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/QZW9K2480086.
A Bela e a Fera - Leiturinha da Giramille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd4fc59cacf42052ce22a92a8ed49c985cbf2daafccf68791fb79860efa360f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZW9K2484677.
A Lebre e a Tartaruga - Leiturinha da Giramille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58253e385cace4dbcd5463e1f5418ad69761327ca3a3cd0a2e3894e3c1306581. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:23:25Z), 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/QZW9K2484630.
O Patinho Feio - Leiturinha da Giramille
Os Três Porquinhos - Leiturinha da Giramille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d9efe805726670cb5ae35cdc04db6539e679eab9003cd42abf1cbd0b091214. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:37Z), 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/QZW9K2484623.
A Cigarra e a Formiga - Leiturinha da Giramille
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea622ba9a0e7b07f3a079dcf18ce03ab0d2634a7698b3b6021c8dcbb14954175. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZW9K2484627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a47d957b0c15057162f0b4d730c569243d3e885aecb149635261a3ae1071f0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZW9K2467333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c15545115fafd3764310b73b8b11dd5dcdefe222997e32abec4c23204efe48. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZHZ62119856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1025d143472a1d2f4cacbed274f9a65c4224016006c020a70b725318eaa7d88a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZW9K2480056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cf794c34507bc3bab6795902d3c475b58b4e2d257232799248085013fa5c1f. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZHZ62119858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6e2d7d554a5954c4dfc51214517643a79816910b64e6f8f991878459f8ff63. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZW9K2473816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5bc26d5fb921779fb3899b2ca10f378535819b974900e2c9384652ac838739. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:54Z), 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/BXK5J2000015.