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 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 0xa1ede60e1f7bb3c62e7fdf11f0654d56f85d8fd711f539c4890b1f22304d64ef. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c40e6861-84fe-4b2b-a22e-bc875b309df0.json and https://artists.proofprofile.net/proofs/artist/c40e6861-84fe-4b2b-a22e-bc875b309df0.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 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 0xcac8add0de648021a56194144ccbc227e180ef33b9f968cfe32d4c65f2249dfc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES5151201290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666219d202c924076fea603973e8968e44ad7306013353aa407532400158ced1. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ES5151201292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e4c420e4b3481b94640e08a8de54ec28969587c104dd4a82b67f3b7f0f64ee. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ES5151200984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e30cf2e97c686cba8aeb2551b229971488cc3a137be9510a28b5a3f00fd738. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ES5701900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a852076af050be9928e6c10076c995dc2e6de887ef28ee44ead3c8e6af932a1. 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/ES5701900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc889a2032b6c4e04de49bf5623d93332098e0c66a763b4178b2ae73a3088483. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/ES5701900129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b62792a800cb2a2c43bd9be96c308b048a51c6d8dfc4cf6b460c78a56aa4ef7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/ES5701900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e84fb2f9b7b260b76415ae9b62b905792f3d7f488cdeee1ed2004c40f771763. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ES5701900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8f4632d9b1bf6ef0940ea77c500ba8afa3275a3d1cb35e64531903437bbee9. 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/ES5701900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d04e7d1716cff4f0637576a7a25bf4075ea89c7ea70d1f451849c42cd6a2a9. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ES5701900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8bfe7aaa17ef5f6d40e5156b45f35a433b4a584c2b03b971c4c7a777065ee8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ES5701900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b10e5bc4d8532ccdff4e82cb992e58ec822e0fce3874da99a3db2abe5c4bc91. 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/ES5701900137.
Alba: a Wildlife Adventure (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c05eb76375064c0f52b123424e750e53777dac9d4f2a2dbbf4007485ce04300. 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/ES79A2118001.
Lorena Álvarez y los Rondadores de la Val d'echo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4097c043beae0ec930fbcb07dfc50813623e007e89eac654759d4de0f965c30f. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/ES79A2117701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f996adcc6953d101fd7e762bb7332bb5aa419c042facae3f6d913519d3dbbd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ES79A2117702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4336c6574144a742ee9ad7e2f3c593270c93c832e67d797b7eafcccd40c690de. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ES79A2217706.
Yo voy soñando (Banda Sonora Original de Mujeres de viento, tierra y ganado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258b7aa62156f7de4f2275dc7546147a15ecf443b4dc750fbb7ee7ab04e20964. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ES79A2217707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f70ca6625c16d759e82c01650e02d9707727e49590d935039b7e695b7aae147. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/ES94E2510304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7aaefb8fa3b94dbd637c0fb678ab37c39a3cf6eafd79d77b265d8614cecbf6. 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/ES94E2510302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77451a765a02f39a9cb471e9bc4dca6f612bdc4b9ee6c0d5d49d208158e8702. 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/ES94E2510301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3798e2a23cd670b1c9b73499ef7ce7b356342561ba8ddd818ee8797b273d0d. 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/ES94E2510303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f70ca6625c16d759e82c01650e02d9707727e49590d935039b7e695b7aae147. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/ES94E2510304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9cbef9985cc6c9c2e8e0c95c33428975a54c09583fa612aea1c6f1518d0f74. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/ES94E2510305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069933f536697ee9070619f6241aa5e2a636297a76d149a05d16179fcdabe661. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES79A2522706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1f51152b6f769c3a9bf620015d3e6208d5cc2a218024d6526f210cd5863cd0. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/ES94E2510306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50563d6f4370e161ac38b6552aaa04553cad9992e925f20f1c758aa59d8bf3a1. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/ES94E2510307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dcc65719c9d78185ab68f4893d39eef35070cf3701c0d759c304348d04038c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ES94E2510308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53db599a7c52ab5b73e49072c0c6d3a347e3e4482802b5bff3a810cfa5adc777. 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/QM4TX2479442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd986d7fe6f3dc1adc13a55cda0b23c0237b8fdf1f30a1535c046d16f0e91f337. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QM4TX2479400.