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 0xafbd161c2fc95c938f331251a7966b1f0afa7c4bf65753e9d7811fe39757168e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3933dd98-7379-4097-ae83-eec24b04d1d1.json and https://artists.proofprofile.net/proofs/artist/3933dd98-7379-4097-ae83-eec24b04d1d1.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 0x9decf3e5535fe56f1cff5b9b3b6f8f81545df317b2f9db0cbfd63f34fe5f96b9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9LX2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31ac5489d3eb633e661bba48257ed022b4319fcbeb2112a7b152e08699b83f9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9LX2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9a31b0b5484e9ac9eeceafd6581764d23f22845e5eba08e182e5f34bdbef6a. 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/FR9LX2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7747b491faaf6d3d965c61526fcca27afa258eb8a1c2ebc9c6ef6f797ba4cf5f. 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/FR9LX2200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6891e792d577de11b275547dd306d95085877391e469429e0a1673cbfa7530. 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/FR9LX2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c727512b50fd5e5611be6aaa276885f232856393452a7e801e1ae419ddd04b5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9LX2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fa532ecb04e39facf9fda66d62be34488955d08cb9d3d60d3fb789242bacfa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9LX2100230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1ba4eba5e6836ad290bf6d331046a4901d86f31113110250fc34d43f996834. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR9LX2200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2480f76a4dcc266b5beb39da76c970c464a912bec597e671f6a213c74fd1c986. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9LX2100110.
Toucanopolitano (Chanson en toucanopolitain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485c24f86b4e0098518fc585d0ba51f4c4ad48b8251c8aa80f906c095d50f3a7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR9LX2200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703f8cebbf5ed3a30341edbcc179d6a6594d5da4b58858ce168ca15da325a8d7. 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/FR9LX2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d92e6112257caa775ab33aa9a3810736658f8503a0e7452a6c9eeb80779fa4e. 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/FR9LX2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa206ba833d3cfb15bd864e8a27cf5ca8f18bb38311ba97afddff3495f8cfce6a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9LX2200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c2641302228df30138007a61da3c79f5ad952edb595a42999c37c28aad0986. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/FR9LX2100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15924709ec69c9c9166153b4bc0a7602394269a029a73dfcfdf9496003e2976. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9LX2100080.
Dreamland (Léo Kobuta of Bleu Toucan Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9decf3e5535fe56f1cff5b9b3b6f8f81545df317b2f9db0cbfd63f34fe5f96b9. 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/FR9LX2200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31ac5489d3eb633e661bba48257ed022b4319fcbeb2112a7b152e08699b83f9. 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/FR9LX2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fa532ecb04e39facf9fda66d62be34488955d08cb9d3d60d3fb789242bacfa. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/FR9LX2100230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c2641302228df30138007a61da3c79f5ad952edb595a42999c37c28aad0986. 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/FR9LX2100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b154aee33e6cc8453a347614a03bcbdba5094675ace0c408c68c34062ad268. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9LX2100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a0ae14241f119f58f5014063146b082383ff16c37856bb79708439872f5651. 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/FR9LX2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15924709ec69c9c9166153b4bc0a7602394269a029a73dfcfdf9496003e2976. 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/FR9LX2100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e3df2f6f041d4ebaecc1d5524beb4870475f35efe532f2d7f08bf920f8d410. 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/FR9LX2100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d92e6112257caa775ab33aa9a3810736658f8503a0e7452a6c9eeb80779fa4e. 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/FR9LX2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2480f76a4dcc266b5beb39da76c970c464a912bec597e671f6a213c74fd1c986. 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/FR9LX2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6af8b36d1ea051679845c5fc8b34c6ebb259bedbd34e5d30a272c7e4f8253d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S2007896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833bbb23fb260eb66758c4fcb53d1e6fd1a52c6011c21173393100369472d31e. 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/FR9W11902816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbd6a733d3280b3ed6380977100437c03c0d3fe99685a0f3537d8683fbd77ea. 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/FR9W11807821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3aa2c986b0ced97f039dd5ba356a396eeddbb91d3e93674d802534b7057334. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W11712137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698934216ec336a2716413f41e4b05cc530053f714da2f34ae7b3550147a176a. 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/FR9W11506227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f76d792a0671e93e51792687cc61491676a2ad30a7e4432f0a628054d314025. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W11506224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb29d4233156710aba93d6452a7cd7926afe75f1367fc6bd0fc37dc875038d1. 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/FR9W11506226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778694eeff53f4dadb6ffca61bba8e88bf748ead4cc57235839811de19a6b7f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W11506223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698934216ec336a2716413f41e4b05cc530053f714da2f34ae7b3550147a176a. 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/FR9W11506227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf20d85d37db477e0f01da5c72f248d06475ae2f939eee72781cbf1d06c5c95. 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/GBS3T1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9cf5612c0a5318c5affbcb3709828d60dd8264eb55a17e022e6a36121bdae5. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/GBS3T1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd77df2152f66299295388790ffd86f146a6f4911704cae6d3a94904e0f375a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6540878018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d6913666c776e3e74129c03808ce7c72b61f5ee24c7235e6faa18195c9ebc7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH6540878019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da6d49789da7b3f5cd8fa704669f234ac853b57cc74dc5754362f2d3c20e535. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6540878020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcde29f02ce60d83b4bfcf5e01b2f3750c1466dde7b0b206eec75586766f1ef4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH6540878021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0897ae6fd5391294ecd53521964afd6ca6c0d662516fbdac33969f054e0d0a0. 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/CH6540878022.