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 0x17b2e531a2cf462e66a158fd958e6379576539fb6559d9dff64ed6014eadec2b. 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/69414497-416d-435e-b4ae-70546552de35.json and https://artists.proofprofile.net/proofs/artist/69414497-416d-435e-b4ae-70546552de35.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 0xbdb71c3db6df73ef9831e7dbc351ea2ddac3cae7e8f14593933d269888dccf20. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:22:13Z), 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/US25X1089235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26355b1df9de4e46f58d9c447cceb75b58210a6d6e0e3434d885c7901b998e4. 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/US25X1090046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae268e5d7622eb4d787e875ef5c0d76280377a941fd2d717088d5f750481ba8. 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/US25X1090047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dbf39d5713ff5625737536f278fdcce2e4e2e220bfbb4a14f501a0b300374a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US25X1090048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5645f7b2b56f3bad54de6f1068e35a156e5017210d2582843d328143ac9b3a55. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US25X1090052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afdd42e6334182d7f337b922787cd1b63dfeaf3f7530aec8728b446b3744d2a. 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/TCADD1768661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1eed2ddaca34853b355b097d73ab6279ea4bb2bf7c4c88a8b08a9facb8e84b. 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/TCADD1768671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73afd6ecc34cdacbc82d14bc680685e15da1ebc62d4a2740528e76b1b0bd89f4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:28:40Z), 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/TCADD1768676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ebf26801317072ad30444b091d2fa64d5e8d0d91bb79a24ed727777fe45186. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCADT1887548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7748ff7ae97945d43edfc7e18ac0e622d89851f8fa6f5029cad8ece98848e9df. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES71859917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc56f1fb32a4c0f06514aeec5c30d907ef8ede5c6ac4b6d3e18d642e779f76. 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/QZES71859923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e16960d704b69c30a94c35e3f2f2a192983a79a01f872113950c6ba1e0a44d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCADU1835617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a900555c832efe6551863cf2f91b9d4b0dff77c514fd8c3a4c7a71700e857f0. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:22Z), 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/QZK6Q1904359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db75932e7c67c3d64fcfc541aef87ed3120073cc5d5301f6014a0fcffa2c851. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFZ42180017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2316a13824804e2820599c5e9bc5b8c4ff5f170ed0c96904f537725bdab59d79. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEQ2293603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db265d26e8fa8d78fd8bdb53ca0f5845062c2c54663afd144ed282fafc4faa0. 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/QZNWY2497923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd7b9849b8e7a8e39691cd1f39ad1409e2fe6d51d8b96058a69b96cd5ec3880. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZWFW2466457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878cb6ff81099dc3d0cc9d2b80aeea3d0c11bf5edcef6944359246365ca1fbea. 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/QZZ772435759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e60a0eb06238db006da604c5f1b2f23d1be5deea8fe4921e9c8902145e87cb. 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/QZZ7S2473159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3920e90ee665a2b0801fa9513fc3cb5fc2fc79d34dcaa14aa8dc9bf9847f3e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QT3EY2434875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd7c7160ac6b5084abdfa6a19233ea29a1ea5a0868fd83220c0cd86b281d472. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:26Z), 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/QZFZ42529482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170b8cd6c87f05efad9134caecfe5fc3846b6c35ce37f0f5e0322cd448954e10. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFZ72578359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5f41ba490358a15ee8aef162b9c63d7219c7d77768debe7e45445d491aac51. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES62527697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a8d00098f90f67b73b1ce9a2f077dc7058b7a9a60f416a0a307a6ca8b9c209. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAFQ2110826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc227557aac9a4b36f223d8160b7ba41d0606041b88822899344706b7dbee72. 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/USASN1500304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a53cc7b14b75e48c633665e393d5c056cbc892764681ee1552af81a0b926eca. 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/QZFZ42038078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196a3e53dc828f0b19573553ae89c80154c1675df4d03fbdd520800c7da0527b. 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/QZWFQ2372291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5227e0ceb9ae5f6607846b6afa62dde2761e62ddc062709a513e38500cf31dcb. 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/QZDA72094832.
Vagabundo é Foda (feat. Self Provoked & Dj Qualy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110d8e5f6add768f2f86564fbf39ee7e878ea9000199499f7dbac7c4995d4340. 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/BXTSF1500003.
Vagabundo É Foda / Linda, Louca e Mimada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110d8e5f6add768f2f86564fbf39ee7e878ea9000199499f7dbac7c4995d4340. 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/BXTSF1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bc7a5a4110f7931d9aa8e4f5df2a776296804e93b5b832725ee0eebcb75e0c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAFT2187038.
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 0x80433a6f5c0d0bafde4ba80bbda4d119ca7aab903060e8e68caf671287aa223a. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QZES91921047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb12fd576ea598e271dd045a19f2d3e949ecc648b5d1721cf594f903f591d4c2. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZES51933726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43ce56b88461d9699e82e8ffded9322bfbbe54e59ff8049957395418e1612f4. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEH262116303.